Prep for 3.3.7 release.

REM 29 Feb SOME_WEEKDAY MSG ...

COPYRIGHT

@@ -3,7 +3,7 @@ THE REMIND COPYRIGHT
 1. REMIND refers to the entire set of files and documentation in the
 REMIND package.
 
-2. REMIND is Copyright 1992-2020 Dianne Skoll, except where noted in
+2. REMIND is Copyright 1992-2021 Dianne Skoll, except where noted in
 individual files.
 
 3. DISTRIBUTION AND USE

configure

@@ -3991,7 +3991,7 @@ _ACEOF
 fi
 done
 
-VERSION=03.03.05
+VERSION=03.03.07
 
 ac_config_files="$ac_config_files src/Makefile www/Makefile src/version.h"
 

configure.in

@@ -75,6 +75,6 @@ if test "$GCC" = yes; then
 fi
 
 AC_CHECK_FUNCS(setenv unsetenv glob mbstowcs setlocale)
-VERSION=03.03.05
+VERSION=03.03.07
 AC_SUBST(VERSION)
 AC_OUTPUT(src/Makefile www/Makefile src/version.h)

docs/WHATSNEW

@@ -1,5 +1,29 @@
 CHANGES TO REMIND
 
+* VERSION 3.3 Patch 7 - 2021-05-10
+
+- MINOR FIX: Refuse to run "make test" as root --- it would fail
+  anyway with an obscure message.
+
+- BUG FIX: Remind would sometimes compute incorrect trigger date for:
+  REM Tue 29 Feb MSG ...
+
+- BUG FIX: Remind would sometimes compute incorrect trigger date for
+  a date spec like: Tue 31 2021 MSG ...
+
+* VERSION 3.3 Patch 6 - 2021-03-30
+
+- test/test.rem: Change local to en_US.utf-8 only if current locale
+  is not a UTF-8 locale.
+
+- MINOR CHANGE: Remind's arithemtic operators (+, -, *, /) give errors
+  on overflow rather than silently giving the wrong answer.
+
+- MINOR CHANGE: Add $IntMin and $IntMax system variables.
+
+- DOCUMENTATION FIX: Document that TkRemind now requires Tcl/Tk version
+  8.5 or newer.
+
 * VERSION 3.3 Patch 5 - 2021-01-21
 
 - NEW FEATURE: tkremind: Add ability to change fonts and colors from

man/rem.1

@@ -1,4 +1,4 @@
-.TH REM 1 "1 January 2020"
+.TH REM 1 "1 January 2021"
 .UC 4
 .SH NAME
 rem \- Invoke Remind with a default filename

man/remind.1

@@ -1,4 +1,4 @@
-.TH REMIND 1 "1 January 2020"
+.TH REMIND 1 "1 January 2021"
 .UC 4
 .SH NAME
 remind \- a sophisticated reminder service
@@ -1868,6 +1868,11 @@ otherwise.
 .PP
 .B NOTES
 .PP
+If the result of an addition, subtraction or multiplication operation
+would not fit in a C "int" type, \fBRemind\fR issues a "Number too
+high" error.  Unlike C, integer operations will not simply give the
+wrong answer in case of overflow.
+.PP
 Operators of equal precedence are \fIalways\fR evaluated from left
 to right, except where parentheses dictate otherwise.  This is important,
 because the enhanced "+" operator is not necessarily associative.
@@ -2060,6 +2065,14 @@ then \fBONCE\fR directives will be ignored.
 .B $InfDelta (read-only)
 If non-zero, then the \fB\-t\fR option was supplied on the command line.
 .TP
+.B $IntMax (read-only)
+The largest representable \fBINT\fR.  On a machine with 32-bit signed integers
+using twos-complement representation, this will be 2147483647.
+.TP
+.B $IntMin (read-only)
+The smallest representable \fBINT\fR.  On a machine with 32-bit signed integers
+using twos-complement representation, this will be -2147483648.
+.TP
 .B $LatDeg, $LatMin, $LatSec
 These specify the latitude of your location.  \fB$LatDeg\fR can
 range from \-90 to 90, and the others from \-59 to 59.  Northern latitudes

man/tkremind.1

@@ -13,8 +13,10 @@ Although not all of \fBRemind\fR's features are available with \fBTkRemind\fR,
 it creates.  This allows you to learn \fBRemind\fR's syntax and then add
 extra features as you become a more sophisticated \fBRemind\fR programmer.
 
-\fBTkRemind\fR is written in Tcl, and requires version 8.0
-(or higher).  It also requires a \fBwish\fR binary.
+\fBTkRemind\fR is written in Tcl, and requires version 8.5 (or higher)
+as well as the tcllib extension.  It also requires a \fBwish\fR
+binary.  If you are using Tcl/Tk 8.5, you may also need either the Img
+or the tkpng extension to handle PNG images.
 
 .SH OPTIONS
 \fBTkRemind\fR itself has no options.  However, it passes certain options

scripts/tkremind

@@ -16,11 +16,22 @@ exec wish "$0" "$@"
 
 # We need at least version 8.5 because of {*} list expansion operator
 if {[catch {package require Tcl 8.5}]} {
-    puts "This program requires Tcl 8.5 or higher."
-    puts "You have version [info tclversion]"
+    puts stderr "This program requires Tcl 8.5 or higher."
+    puts stderr "You have version [info tclversion]"
     exit 1
 }
 
+# If it's 8.5, try using the Img or the TkPNG package to
+# get PNG support
+if {[info tclversion] == 8.5} {
+    if {[catch {package require Img}]} {
+        if {[catch {package require tkpng}]} {
+            puts stderr "Tcl/Tk version 8.5 might require either the Img or tkpng"
+            puts stderr "package to handle PNG images correctly.  TkRemind may"
+            puts stderr "crash because neither of these packages was found."
+        }
+    }
+}
 wm withdraw .
 
 set Hostname [exec hostname]
@@ -113,13 +124,6 @@ if {[catch {package require json}]} {
     missing_tcllib json
 }
 
-
-# Check that we have the right version of wish
-if {$tcl_version < 8.0} {
-    tk_dialog .error Error "You need wish version 8.0 or higher to run TkRemind; you have $tcl_version" error 0 OK
-    exit 1
-}
-
 if {$tcl_platform(platform) == "windows"} {
     tk_dialog .error Error "Please do not port Remind to Windows" error 0 OK
     exit 1
@@ -927,7 +931,7 @@ proc LoadOptions {} {
         }
         foreach {key val} $line {}
         if {![info exists Option($key)]} {
-            puts "Unknown option in $ConfigFile: $key"
+            puts stderr "Unknown option in $ConfigFile: $key"
             continue
         }
         set Option($key) $val
@@ -2569,7 +2573,7 @@ proc DaemonReadable { file } {
 	    }
 	}
 	default {
-	    puts "Unknown message from daemon: $line\n"
+	    puts stderr "Unknown message from daemon: $line\n"
 	}
     }
 }

src/calendar.c

@@ -5,7 +5,7 @@
 /*  The code for generating a calendar.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/custom.h

@@ -6,7 +6,7 @@
 /*  which you can customize.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/custom.h.in

@@ -6,7 +6,7 @@
 /*  which you can customize.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/dorem.c

@@ -7,7 +7,7 @@
 /*  commands.                                                  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/dosubst.c

@@ -6,7 +6,7 @@
 /*  reminders are triggered.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/dynbuf.c

@@ -6,7 +6,7 @@
 /*  buffers.                                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/dynbuf.h

@@ -5,7 +5,7 @@
 /*  Declaration of functions for manipulating dynamic buffers  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/err.h

@@ -5,7 +5,7 @@
 /*  Error definitions.                                         */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/expr.c

@@ -5,7 +5,7 @@
 /*  This file contains routines to parse and evaluate          */
 /*  expressions.                                               */
 /*                                                             */
-/*  Copyright 1992-2020 by Dianne Skoll                        */
+/*  Copyright 1992-2021 by Dianne Skoll                        */
 /*                                                             */
 /***************************************************************/
 
@@ -13,6 +13,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#include <limits.h>
 
 #include <stdlib.h>
 
@@ -493,6 +494,7 @@ static int MakeValue(char const *s, Value *v, Var *locals, ParsePtr p)
     int len;
     int h, m, r;
     int ampm = 0;
+    int prev_val;
 
     if (*s == '\"') { /* It's a literal string "*/
 	len = strlen(s)-1;
@@ -519,9 +521,15 @@ static int MakeValue(char const *s, Value *v, Var *locals, ParsePtr p)
 	return OK;
     } else if (isdigit(*s)) { /* It's a number - use len to hold it.*/
 	len = 0;
+        prev_val = 0;
 	while (*s && isdigit(*s)) {
 	    len *= 10;
 	    len += (*s++ - '0');
+            if (len < prev_val) {
+                /* We overflowed */
+                return E_2HIGH;
+            }
+            prev_val = len;
 	}
 	if (*s == ':' || *s == '.' || *s == TimeSep) { /* Must be a literal time */
 	    s++;
@@ -758,15 +766,22 @@ static int Add(void)
 
 /* If both are ints, just add 'em */
     if (v2.type == INT_TYPE && v1.type == INT_TYPE) {
-	v2.v.val += v1.v.val;
-	PushValStack(v2);
+        int old = v1.v.val;
+	v1.v.val += v2.v.val;
+        /* Check for overflow */
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) {
+            return E_2HIGH;
+        }
+	PushValStack(v1);
 	return OK;
     }
 
 /* If it's a date plus an int, add 'em */
     if ((v1.type == DATE_TYPE && v2.type == INT_TYPE) ||
 	(v1.type == INT_TYPE && v2.type == DATE_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val += v2.v.val;
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	v1.type = DATE_TYPE;
 	PushValStack(v1);
@@ -776,7 +791,9 @@ static int Add(void)
 /* If it's a datetime plus an int or a time, add 'em */
     if ((v1.type == DATETIME_TYPE && (v2.type == INT_TYPE || v2.type == TIME_TYPE)) ||
 	((v1.type == INT_TYPE || v1.type == TIME_TYPE) && v2.type == DATETIME_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val += v2.v.val;
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	v1.type = DATETIME_TYPE;
 	PushValStack(v1);
@@ -788,7 +805,10 @@ static int Add(void)
     if ((v1.type == TIME_TYPE && v2.type == INT_TYPE) ||
 	(v1.type == INT_TYPE && v2.type == TIME_TYPE) ||
 	(v1.type == TIME_TYPE && v2.type == TIME_TYPE)) {
-	v1.v.val = (v1.v.val + v2.v.val) % MINUTES_PER_DAY;
+        int old = v1.v.val;
+	v1.v.val += v2.v.val;
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
+	v1.v.val = v1.v.val % MINUTES_PER_DAY;
 	if (v1.v.val < 0) v1.v.val += MINUTES_PER_DAY;
 	v1.type = TIME_TYPE;
 	PushValStack(v1);
@@ -848,14 +868,18 @@ static int Subtract(void)
 
     /* If they're both INTs, do subtraction */
     if (v1.type == INT_TYPE && v2.type == INT_TYPE) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_2HIGH;
 	PushValStack(v1);
 	return OK;
     }
 
     /* If it's a date minus an int, do subtraction, checking for underflow */
     if (v1.type == DATE_TYPE && v2.type == INT_TYPE) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	PushValStack(v1);
 	return OK;
@@ -864,7 +888,9 @@ static int Subtract(void)
     /* If it's a datetime minus an int or a time, do subtraction,
      * checking for underflow */
     if (v1.type == DATETIME_TYPE && (v2.type == INT_TYPE || v2.type == TIME_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	PushValStack(v1);
 	return OK;
@@ -882,7 +908,9 @@ static int Subtract(void)
     if ((v1.type == TIME_TYPE && v2.type == TIME_TYPE) ||
 	(v1.type == DATETIME_TYPE && v2.type == DATETIME_TYPE) ||
 	(v1.type == DATE_TYPE && v2.type == DATE_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	v1.type = INT_TYPE;
 	PushValStack(v1);
 	return OK;
@@ -912,7 +940,11 @@ static int Multiply(void)
     }
 
     if (v1.type == INT_TYPE && v2.type == INT_TYPE) {
+        int old = v1.v.val;
 	v1.v.val *= v2.v.val;
+        if (v2.v.val != 0) {
+            if (_private_div(v1.v.val, v2.v.val) != old) return E_2HIGH;
+        }
 	PushValStack(v1);
 	return OK;
     }
@@ -940,6 +972,10 @@ static int Divide(void)
 
     if (v1.type == INT_TYPE && v2.type == INT_TYPE) {
 	if (v2.v.val == 0) return E_DIV_ZERO;
+        /* This is the only way it can overflow */
+        if (v2.v.val == -1 && v1.v.val == INT_MIN) {
+            return E_2HIGH;
+        }
 	v1.v.val /= v2.v.val;
 	PushValStack(v1);
 	return OK;
@@ -1114,7 +1150,9 @@ static int UnMinus(void)
 {
     Value *v = &ValStack[ValStackPtr-1];
     if (v->type != INT_TYPE) return E_BAD_TYPE;
+    int old = v->v.val;
     v->v.val = -v->v.val;
+    if (_private_unminus_overflow(old, v->v.val)) return E_2HIGH;
     return OK;
 }
 

src/expr.h

@@ -5,7 +5,7 @@
 /*  Contains a few definitions used by expression evaluator.   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -53,3 +53,12 @@ if (ValStackPtr <= 0) \
 return E_VA_STK_UNDER; \
 else \
 (val) = ValStack[--ValStackPtr]
+
+/* These functions are in utils.c and are used to detect overflow
+   in various arithmetic operators.  They have to be in separate
+   functions with extern linkage to defeat compiler optimizations
+   that would otherwise break the overflow checks. */
+extern int _private_div(int a, int b);
+extern int _private_add_overflow(int result, int b, int old);
+extern int _private_sub_overflow(int result, int b, int old);
+extern int _private_unminus_overflow(int a, int b);

src/files.c

@@ -7,7 +7,7 @@
 /*  files.                                                     */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/funcs.c

@@ -6,7 +6,7 @@
 /*  expressions.                                               */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -866,12 +866,14 @@ static int FTime(func_info *info)
 /***************************************************************/
 static int FAbs(func_info *info)
 {
-    int v;
+    volatile int v;
 
     ASSERT_TYPE(0, INT_TYPE);
     v = ARGV(0);
     RetVal.type = INT_TYPE;
     RETVAL = (v < 0) ? (-v) : v;
+    v = RETVAL;
+    if (v < 0) return E_2HIGH;
     return OK;
 }
 

src/globals.c

@@ -8,7 +8,7 @@
 /*  globals.h and err.h                                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/globals.h

@@ -7,7 +7,7 @@
 /*  MK_GLOBALS.  Also contains useful macro definitions.       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/hbcal.c

@@ -5,7 +5,7 @@
 /*  Support for the Hebrew calendar                            */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /*  Derived from code written by Amos Shapir in 1978; revised  */
 /*  1985.                                                      */

src/init.c

@@ -7,7 +7,7 @@
 /*  in normal mode.                                            */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -649,7 +649,7 @@ void InitRemind(int argc, char const *argv[])
 #ifndef L_USAGE_OVERRIDE
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2020 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif

src/lang.h

@@ -5,7 +5,7 @@
 /*  Header file for language support for various languages.    */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/langs/danish.h

@@ -6,7 +6,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2020 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1993 by Mogens Lynnerup.        */
 /*                                                             */
 /***************************************************************/

src/langs/dutch.h

@@ -11,7 +11,7 @@
 /*  Further corrections by Erik-Jan Vens                       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/langs/english.h

@@ -5,7 +5,7 @@
 /*  Support for the English language.                          */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/langs/finnish.h

@@ -11,7 +11,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*  This file is Copyright (C) 1993-1998 by Mikko Silvonen.    */
-/*  REMIND is Copyright (C) 1992-2020 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*                                                             */
 /***************************************************************/
 
@@ -527,7 +527,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2020 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETAVERSIO <<<<\n");
 #endif

src/langs/french.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2020 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1993 by Laurent Duperval and    */
 /*  Dianne Skoll.                                              */
 /*                                                             */
@@ -359,7 +359,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2020 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif

src/langs/german.h

@@ -9,7 +9,7 @@
 /*  I don't speak German.                                      */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/langs/icelandic.h

@@ -5,7 +5,7 @@
 /*  Support for the Icelandic language.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*  Translated by Björn Davíðsson (bjossi@snerpa.is)           */
 /*                                                             */
 /***************************************************************/

src/langs/italian.h

@@ -7,7 +7,7 @@
 /*  This file is part of REMIND.                               */
 /*  It is Copyright (C) 1996 by Valerio Aimale                 */
 /*                                                             */
-/*  Remind is copyright (C) 1992-2020 by Dianne Skoll          */
+/*  Remind is copyright (C) 1992-2021 by Dianne Skoll          */
 /*                                                             */
 /***************************************************************/
 

src/langs/norwgian.h

@@ -6,7 +6,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*  This file is Copyright (C) 1993 by Trygve Randen.          */
-/*  Remind is Copyright (C) 1992-2020 by Dianne Skoll          */
+/*  Remind is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*                                                             */
 /***************************************************************/
 

src/langs/polish.h

@@ -9,7 +9,7 @@
 /*  Polish.                                                    */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -397,7 +397,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2020 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif

src/langs/portbr.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2020 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1996 by Marco Paganini and      */
 /*  Dianne Skoll.                                              */
 /*                                                             */
@@ -257,7 +257,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (versao %s) (C) 1992-2020 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (versao %s) (C) 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> VERSAO BETA <<<<\n");
 #endif

src/langs/romanian.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2020 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1996-1998 by Liviu Daia         */
 /*                                                             */
 /***************************************************************/

src/langs/spanish.h

@@ -7,7 +7,7 @@
 /*  Author: Rafa Couto <rafacouto@biogate.com>                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/main.c

@@ -6,7 +6,7 @@
 /*  routines, etc.                                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/moon.c

@@ -5,7 +5,7 @@
 /*  Calculations for figuring out moon phases.                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/omit.c

@@ -6,7 +6,7 @@
 /*  the data structures for OMITted dates.                     */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/protos.h

@@ -5,7 +5,7 @@
 /*  Function Prototypes.                                       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/queue.c

@@ -5,7 +5,7 @@
 /*  Queue up reminders for subsequent execution.               */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/sort.c

@@ -5,7 +5,7 @@
 /*  Routines for sorting reminders by trigger date             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/token.c

@@ -6,7 +6,7 @@
 /*  classifying the tokens parsed.                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/trigger.c

@@ -5,7 +5,7 @@
 /*  Routines for figuring out the trigger date of a reminder   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -24,6 +24,8 @@
 #define GOT_YR 4
 #define GOT_WD 8
 
+#define ADVANCE_TO_WD(x, wd) while (! ((wd) & (1 << ((x)%7)))) (x)++
+
 static int JYear(int jul);
 static int JMonth(int jul);
 static int NextSimpleTrig(int startdate, Trigger *trig, int *err);
@@ -58,9 +60,10 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
     if (trig->wd != NO_WD) typ |= GOT_WD;
     switch(typ) {
     case 0:
+        return startdate;
+
     case GOT_WD:
-	if (trig->wd != NO_WD)
-	    while(! (trig->wd & (1 << (startdate%7)))) startdate++;
+	ADVANCE_TO_WD(startdate, trig->wd);
 	return startdate;
 
     case GOT_DAY:
@@ -83,12 +86,12 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	else return -1;
 
     case GOT_DAY+GOT_MON:
-	if (m > trig->m || (m == trig->m && d > trig->d)) y++;
 	if (trig->d > MonthDays[trig->m]) {
 	    *err = E_BAD_DATE;
 	    return -1;
 	}
 
+	if (m > trig->m || (m == trig->m && d > trig->d)) y++;
 	/* Take care of Feb. 29 */
 	while (trig->d > DaysInMonth(trig->m, y)) y++;
 	return Julian(y, trig->m, trig->d);
@@ -121,19 +124,19 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	if (y > trig->y) return -1;
 	if (y < trig->y) j = Julian(trig->y, 0, 1);
 	else j = startdate;
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	if (JYear(j) > trig->y) return -1;
 	return j;
 
     case GOT_MON+GOT_WD:
 	if (m == trig->m) {
 	    j = startdate;
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    if (JMonth(j) == trig->m) return j;
 	}
 	if (m >= trig->m) j = Julian(y+1, trig->m, 1);
 	else j = Julian(y, trig->m, 1);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j; /* Guaranteed to be within the month */
 
     case GOT_DAY+GOT_WD:
@@ -144,7 +147,7 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	    /* If there are fewer days in previous month, no match */
 	    if (trig->d <= DaysInMonth(m2, y2)) {
 		j = Julian(y2, m2, trig->d);
-		while(! (trig->wd & (1 << (j%7)))) j++;
+                ADVANCE_TO_WD(j, trig->wd);
 		if (j >= startdate) return j;
 
 	    }
@@ -153,7 +156,7 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	/* Try this month */
 	if (trig->d <= DaysInMonth(m, y)) {
 	    j = Julian(y, m, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    if (j >= startdate) return j;
 	}
 
@@ -162,18 +165,18 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	if (m2 > 11) { m2 = 0; y++; }
 	while (trig->d > DaysInMonth(m2, y)) m2++;
 	j = Julian(y, m2, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j;
 
     case GOT_WD+GOT_YR+GOT_DAY:
 	if (y > trig->y+1 || (y > trig->y && m>0)) return -1;
 	if (y > trig->y) {
 	    j = Julian(trig->y, 11, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    if (j >= startdate) return j;
 	} else if (y < trig->y) {
 	    j = Julian(trig->y, 0, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    return j;
 	} else {
 	    /* Try last month */
@@ -181,14 +184,16 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 		m2 = m-1;
 		while (trig->d > DaysInMonth(m2, trig->y)) m2--;
 		j = Julian(trig->y, m2, trig->d);
-		while(! (trig->wd & (1 << (j%7)))) j++;
+                ADVANCE_TO_WD(j, trig->wd);
+                if (JYear(j) > trig->y) return -1;
 		if (j >= startdate) return j;
 	    }
 	}
 	/* Try this month */
 	if (trig->d <= DaysInMonth(m, trig->y)) {
 	    j = Julian(trig->y, m, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
+            if (JYear(j) > trig->y) return -1;
 	    if (j >= startdate) return j;
 	}
 
@@ -197,7 +202,8 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	m++;
 	while (trig->d > DaysInMonth(m, trig->d)) m++;
 	j = Julian(trig->y, m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
+        if (JYear(j) > trig->y) return -1;
 	return j;
 
     case GOT_DAY+GOT_MON+GOT_WD:
@@ -215,31 +221,32 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 
 	/* Try last year */
 	j = Julian(y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	if (j >= startdate) return j;
 
 	/* Try this year */
 	y++;
+	while (trig->d > DaysInMonth(trig->m, y)) y++;
 	j = Julian(y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	if (j >= startdate) return j;
 
 	/* Must be next year */
 	y++;
 	while (trig->d > DaysInMonth(trig->m, y)) y++;
 	j = Julian(y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j;
 
     case GOT_WD+GOT_MON+GOT_YR:
 	if (y > trig->y || (y == trig->y && m > trig->m)) return -1;
 	if (trig->y > y || (trig->y == y && trig->m > m)) {
 	    j = Julian(trig->y, trig->m, 1);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    return j;
 	} else {
 	    j = startdate;
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    FromJulian(j, &y2, &m2, &d2);
 	    if (m2 == trig->m) return j; else return -1;
 	}
@@ -250,7 +257,7 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	    return -1;
 	}
 	j = Julian(trig->y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j;
 
     default:

src/types.h

@@ -5,7 +5,7 @@
 /*  Type definitions all dumped here.                          */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/userfns.c

@@ -6,7 +6,7 @@
 /*  functions.                                                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/utils.c

@@ -5,7 +5,7 @@
 /*  Useful utility functions.                                  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -123,3 +123,26 @@ int DateOK(int y, int m, int d)
 	d > DaysInMonth(m, y) ) return 0;
     else return 1;
 }
+
+/* Functions designed to defeat gcc optimizer */
+
+int _private_div(int a, int b) { return a/b; }
+int _private_add_overflow(int result, int b, int old)
+{
+    if (b > 0 && result < old) return 1;
+    if (b < 0 && result > old) return 1;
+    return 0;
+}
+int _private_sub_overflow(int result, int b, int old)
+{
+    if (b < 0 && result < old) return 1;
+    if (b > 0 && result > old) return 1;
+    return 0;
+}
+
+int _private_unminus_overflow(int a, int b)
+{
+    if (a > 0 && b > 0) return 1;
+    if (a < 0 && b < 0) return 1;
+    return 0;
+}

src/var.c

@@ -6,7 +6,7 @@
 /*  user- and system-defined variables.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2020 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -17,6 +17,7 @@
 #include <ctype.h>
 
 #include <stdlib.h>
+#include <limits.h>
 #include "types.h"
 #include "expr.h"
 #include "globals.h"
@@ -31,6 +32,9 @@
 #define VALUE    ErrMsg[E_VAL]
 #define UNDEF	 ErrMsg[E_UNDEF]
 
+static int IntMin = INT_MIN;
+static int IntMax = INT_MAX;
+
 static Var *VHashTbl[VAR_HASH_SIZE];
 
 typedef int (*SysVarFunc)(int, Value *);
@@ -661,6 +665,8 @@ static SysVar SysVarArr[] = {
     {"HushMode",       0,  INT_TYPE,     &Hush,               0,      0   },
     {"IgnoreOnce",     0,  INT_TYPE,     &IgnoreOnce,         0,      0   },
     {"InfDelta",       0,  INT_TYPE,     &InfiniteDelta,      0,      0   },
+    {"IntMax",         0,  INT_TYPE,     &IntMax,             0,      0   },
+    {"IntMin",         0,  INT_TYPE,     &IntMin,             0,      0   },
     {"LatDeg",         1,  INT_TYPE,     &LatDeg,             -90,    90  },
     {"LatMin",         1,  INT_TYPE,     &LatMin,             -59,    59  },
     {"LatSec",         1,  INT_TYPE,     &LatSec,             -59,    59  },

sync-to-dianne-git

@@ -3,6 +3,6 @@ cd /home/dfs/Software/Remind.git || exit 1
 
 rm -f .git/COMMIT_EDITMSG .git/*~
 
-git update-server-info && cd .git && rsync --archive --verbose --progress --delete ./ dianne.skoll.ca:web/projects/remind/git/Remind.git/
+git update-server-info && cd .git && rsync --exclude HEADER.html --archive --verbose --progress --delete ./ dianne.skoll.ca:web/projects/remind/git/Remind.git/
 exit $?
 

tests/test-rem

@@ -7,13 +7,22 @@
 # in the build directory.
 #
 # This file is part of REMIND.
-# Copyright (C) 1992-2018 Dianne Skoll
+# Copyright (C) 1992-2021 Dianne Skoll
 # ---------------------------------------------------------------------------
 
 DIR=`dirname $0`
 cd $DIR
 if test $? != 0 ; then
+    echo ""
     echo "Unable to cd $DIR" >&2
+    echo ""
+    exit 1
+fi
+
+if test `id -u` = 0 ; then
+    echo ""
+    echo "*** Please do not run the test suite as root; it will fail."
+    echo ""
     exit 1
 fi
 
@@ -56,6 +65,14 @@ echo "" >> ../tests/test.out
 
 chmod 644 include_dir/04cantread.rem
 
+# Feb 29 bug
+echo "Feb 29 Bug Test" >> ../tests/test.out
+echo 'REM Sun 29 Feb MSG [$T]' | ../src/remind -dt - 1 feb 2021 >> ../tests/test.out 2>&1
+
+# Day Weekday Year out-of-year bug
+echo "Mon 31 Dec Bug Test" >> ../tests/test.out
+echo 'REM Mon 31 2021 MSG [$T]' | ../src/remind -dt - 31 dec 2021 >> ../tests/test.out 2>&1
+
 echo "Color Test" >> ../tests/test.out
 ../src/remind -ccl ../tests/colors.rem 1 aug 2007 >> ../tests/test.out 2>&1
 
@@ -289,8 +306,17 @@ rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
 rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
 EOF
 
-export LC_ALL=en_US.utf-8
-export LANG=en_US.utf-8
+# If we're already in a utf-8 locale, do
+# nothing
+
+if ! echo $LC_ALL | grep -i utf-8 > /dev/null 2>&1 ; then
+    export LC_ALL=en_US.utf-8
+fi
+
+if ! echo $LANG | grep -i utf-8 > /dev/null 2>&1 ; then
+    export LANG=en_US.utf-8
+fi
+
 ../src/remind -w128 -c ../tests/utf-8.rem 1 Nov 2019 >> ../tests/test.out
 cmp -s ../tests/test.out ../tests/test.cmp
 if [ "$?" = "0" ]; then

tests/test.cmp

@@ -857,7 +857,7 @@ set a057 value("a05"+"6")
 "a05" + "6" => "a056"
 value("a056") => "SDFJHSDF KSJDFH KJSDFH KSJDFH"
 set a058 version()
-version() => "03.03.05"
+version() => "03.03.07"
 set a059 wkday(today())
 today() => 1991-02-16
 wkday(1991-02-16) => "Saturday"
@@ -2426,7 +2426,7 @@ a086  4
 a109  2012-01-01
 a128  2018-02-03@16:45
 a039  "February"
-a058  "03.03.05"
+a058  "03.03.07"
 a077  "1992 92
 "
 a096  -4
@@ -3043,6 +3043,85 @@ coerce("DATETIME", "2020-05-05@12:45") => 2020-05-05@12:45
 set x coerce("DATETIME", "2020-05-05@1:45pm")
 coerce("DATETIME", "2020-05-05@1:45pm") => 2020-05-05@13:45
 
+# Overflow - these tests only work on machines with 32-bit
+# twos-complement signed integers.  You may get test failures on
+# machines with different architectures.
+set a $IntMin - 1
+$IntMin => -2147483648
+-2147483648 - 1 => Number too high
+../tests/test.rem(539): `-': Number too high
+set a $IntMin - $IntMax
+$IntMin => -2147483648
+$IntMax => 2147483647
+-2147483648 - 2147483647 => Number too high
+../tests/test.rem(540): `-': Number too high
+set a $IntMax - $IntMin
+$IntMax => 2147483647
+$IntMin => -2147483648
+2147483647 - -2147483648 => Number too high
+../tests/test.rem(541): `-': Number too high
+set a $IntMax - (-1)
+$IntMax => 2147483647
+- 1 => -1
+2147483647 - -1 => Number too high
+../tests/test.rem(542): `-': Number too high
+set a $IntMax + 1
+$IntMax => 2147483647
+2147483647 + 1 => Number too high
+../tests/test.rem(543): `+': Number too high
+set a $IntMax + $IntMax
+$IntMax => 2147483647
+$IntMax => 2147483647
+2147483647 + 2147483647 => Number too high
+../tests/test.rem(544): `+': Number too high
+set a $IntMin + (-1)
+$IntMin => -2147483648
+- 1 => -1
+-2147483648 + -1 => Number too high
+../tests/test.rem(545): `+': Number too high
+set a $IntMin + $IntMin
+$IntMin => -2147483648
+$IntMin => -2147483648
+-2147483648 + -2147483648 => Number too high
+../tests/test.rem(546): `+': Number too high
+set a $IntMax * 2
+$IntMax => 2147483647
+2147483647 * 2 => Number too high
+../tests/test.rem(547): `*': Number too high
+set a $IntMax * $IntMax
+$IntMax => 2147483647
+$IntMax => 2147483647
+2147483647 * 2147483647 => Number too high
+../tests/test.rem(548): `*': Number too high
+set a $IntMax * $IntMin
+$IntMax => 2147483647
+$IntMin => -2147483648
+2147483647 * -2147483648 => Number too high
+../tests/test.rem(549): `*': Number too high
+set a $IntMin * 2
+$IntMin => -2147483648
+-2147483648 * 2 => Number too high
+../tests/test.rem(550): `*': Number too high
+set a $IntMin * $IntMin
+$IntMin => -2147483648
+$IntMin => -2147483648
+-2147483648 * -2147483648 => Number too high
+../tests/test.rem(551): `*': Number too high
+set a $IntMin * $IntMax
+$IntMin => -2147483648
+$IntMax => 2147483647
+-2147483648 * 2147483647 => Number too high
+../tests/test.rem(552): `*': Number too high
+set a $IntMin / (-1)
+$IntMin => -2147483648
+- 1 => -1
+-2147483648 / -1 => Number too high
+../tests/test.rem(553): `/': Number too high
+set a abs($IntMin)
+$IntMin => -2147483648
+abs(-2147483648) => Number too high
+../tests/test.rem(554): Number too high
+
 # Don't want Remind to queue reminders
 EXIT
 
@@ -4161,6 +4240,12 @@ September 30
 # fileinfo 5 ../tests/include_test.rem
 2007/08/15 * * * * Whee!!!!
 # rem2ps end
+Feb 29 Bug Test
+-(1): Trig = Sunday, 3 March, 2024
+No reminders.
+Mon 31 Dec Bug Test
+-(1): Expired
+No reminders.
 Color Test
 (0lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk(B
 (0x(B                                August 2007                                 (0x(B

tests/test.rem

@@ -533,6 +533,26 @@ set x coerce("DATETIME", "2020-05-05@12:45am")
 set x coerce("DATETIME", "2020-05-05@12:45")
 set x coerce("DATETIME", "2020-05-05@1:45pm")
 
+# Overflow - these tests only work on machines with 32-bit
+# twos-complement signed integers.  You may get test failures on
+# machines with different architectures.
+set a $IntMin - 1
+set a $IntMin - $IntMax
+set a $IntMax - $IntMin
+set a $IntMax - (-1)
+set a $IntMax + 1
+set a $IntMax + $IntMax
+set a $IntMin + (-1)
+set a $IntMin + $IntMin
+set a $IntMax * 2
+set a $IntMax * $IntMax
+set a $IntMax * $IntMin
+set a $IntMin * 2
+set a $IntMin * $IntMin
+set a $IntMin * $IntMax
+set a $IntMin / (-1)
+set a abs($IntMin)
+
 # Don't want Remind to queue reminders
 EXIT