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| author | dkf <donal.k.fellows@manchester.ac.uk> | 2010-01-19 22:02:42 (GMT) |
|---|---|---|
| committer | dkf <donal.k.fellows@manchester.ac.uk> | 2010-01-19 22:02:42 (GMT) |
| commit | 1194c72f25a0e42a36978e2ba295809255856e49 (patch) | |
| tree | 313f16de04d1f869c193750347eb6047316cb552 /generic/tkCanvas.c | |
| parent | b0e67bffbe79c9bca945114d5b8df70419afbcd6 (diff) | |
| download | tk-1194c72f25a0e42a36978e2ba295809255856e49.zip tk-1194c72f25a0e42a36978e2ba295809255856e49.tar.gz tk-1194c72f25a0e42a36978e2ba295809255856e49.tar.bz2 | |
[Bug 2931374]: Stop overflow of working buffer during construction of long
tag expressions.
Diffstat (limited to 'generic/tkCanvas.c')
| -rw-r--r-- | generic/tkCanvas.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/generic/tkCanvas.c b/generic/tkCanvas.c index eed2d5a..fa160b9 100644 --- a/generic/tkCanvas.c +++ b/generic/tkCanvas.c @@ -12,7 +12,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkCanvas.c,v 1.46.2.3 2010/01/18 21:20:09 nijtmans Exp $ + * RCS: @(#) $Id: tkCanvas.c,v 1.46.2.4 2010/01/19 22:02:43 dkf Exp $ */ /* #define USE_OLD_TAG_SEARCH 1 */ @@ -3233,7 +3233,11 @@ TagSearchScanExpr( while (searchPtr->stringIndex < searchPtr->stringLength) { c = searchPtr->string[searchPtr->stringIndex++]; - if (expr->allocated == expr->index) { + /* + * Need two slots free at this point, not one. [Bug 2931374] + */ + + if (expr->index >= expr->allocated-1) { expr->allocated += 15; if (expr->uids) { expr->uids = (Tk_Uid *) |