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More checks on INT * STRING plus a man page note.

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This commit is contained in:
Dianne Skoll
2024-02-03 16:29:05 -05:00
parent 60793d53c6
commit 2beaab1a2f
2 changed files with 7 additions and 1 deletions
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4
man/remind.1.in
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@@ -2598,7 +2598,9 @@ The maximum number of iterations for the \fBSATISFY\fR clause
A limit on the longest string that \fBRemind\fR will allow you
to create. The default is 65535. If you set \fB$MaxStringLen\fR to 0
or to -1, then \fBremind\fR will allow you to create arbitrarily-long
strings, at least until it runs out of memory.
strings, at least until it runs out of memory. We do not recommend
setting \fB$MaxStringLen\fR to 0 or -1 because it is very easy to write
code that DOSes \fBRemind\fR in that case.
.TP
.B $MinsFromUTC
The number of minutes between Universal Time Coordinated and local time. If

4
src/expr.c
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@@ -996,6 +996,10 @@ static int Multiply(void)
DestroyValue(v1); DestroyValue(v2);
return E_STRING_TOO_LONG;
}
if ((unsigned long) l * (unsigned long) rep >= (unsigned long) INT_MAX) {
DestroyValue(v1); DestroyValue(v2);
return E_STRING_TOO_LONG;
}
if (MaxStringLen > 0 && (l * rep) > MaxStringLen) {
DestroyValue(v1); DestroyValue(v2);
return E_STRING_TOO_LONG;