fix pdftex segfault on pdfmatch invocations
Norbert Preining
7 years ago
| 0 | fix a segfault in pdftex | |
| 1 | reported by David Carlisle on tex-live | |
| 2 | http://tug.org/pipermail/tex-live/2016-June/038664.html | |
| 3 | proposed fix by Akira Kakuto | |
| 4 | http://tug.org/pipermail/tex-live/2016-June/038666.html | |
| 5 | originally on tex.sx | |
| 6 | http://chat.stackexchange.com/transcript/message/30145736 | |
| 7 | --- | |
| 8 | texk/web2c/pdftexdir/utils.c | 3 ++- | |
| 9 | 1 file changed, 2 insertions(+), 1 deletion(-) | |
| 10 | ||
| 11 | --- texlive-bin.orig/texk/web2c/pdftexdir/utils.c | |
| 12 | +++ texlive-bin/texk/web2c/pdftexdir/utils.c | |
| 13 | @@ -870,7 +870,8 @@ | |
| 14 | int size, len = 0; /* to avoid warning about uninitialized use of len */ | |
| 15 | ||
| 16 | boolean found = i < sub_match_count | |
| 17 | - && match_string != NULL && pmatch[i].rm_so >= 0 && i >= 0; | |
| 18 | + && match_string != NULL && pmatch[i].rm_so >= 0 && i >= 0 | |
| 19 | + && pmatch[i].rm_eo >= pmatch[i].rm_so; | |
| 20 | ||
| 21 | if (found) { | |
| 22 | len = pmatch[i].rm_eo - pmatch[i].rm_so; |