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| author | Paul Eggert <eggert@cs.ucla.edu> | 2011-06-05 23:16:12 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2011-06-05 23:16:12 -0700 |
| commit | d1f3d2afe1057a99b9dec6d1bd5b57bfee81fdff (patch) | |
| tree | f471bdf3143b2d4ba0cf2d4c4e530304b7a67c88 /src/coding.c | |
| parent | dd52fcea063f37a9875bf9196dbe11a442e8adfc (diff) | |
| download | emacs-d1f3d2afe1057a99b9dec6d1bd5b57bfee81fdff.tar.gz | |
Check for buffer and string overflow more precisely.
* buffer.h (BUF_BYTES_MAX): New macro.
* lisp.h (STRING_BYTES_MAX): New macro.
* alloc.c (Fmake_string):
* character.c (string_escape_byte8):
* coding.c (coding_alloc_by_realloc):
* doprnt.c (doprnt):
* editfns.c (Fformat):
* eval.c (verror):
Use STRING_BYTES_MAX, not MOST_POSITIVE_FIXNUM,
since they may not be the same number.
* editfns.c (Finsert_char):
* fileio.c (Finsert_file_contents):
Likewise for BUF_BYTES_MAX.
Diffstat (limited to 'src/coding.c')
| -rw-r--r-- | src/coding.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/coding.c b/src/coding.c index 6ccaf354c74..64e8e41a5a1 100644 --- a/src/coding.c +++ b/src/coding.c @@ -1071,8 +1071,8 @@ coding_set_destination (struct coding_system *coding) static void coding_alloc_by_realloc (struct coding_system *coding, EMACS_INT bytes) { - if (coding->dst_bytes >= MOST_POSITIVE_FIXNUM - bytes) - error ("Maximum size of buffer or string exceeded"); + if (STRING_BYTES_MAX - coding->dst_bytes < bytes) + string_overflow (); coding->destination = (unsigned char *) xrealloc (coding->destination, coding->dst_bytes + bytes); coding->dst_bytes += bytes; |