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| author | Paul Eggert <eggert@cs.ucla.edu> | 2015-01-21 00:29:02 -0800 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2015-01-21 00:29:32 -0800 |
| commit | 88ba49fe356ecbb57f604158c432f1044d50b0bb (patch) | |
| tree | 0140027f2210cbeb8d18de370e2165c71c755c31 /src/coding.c | |
| parent | 3ea1b31f46f21ecfb089628e63187970fdb58d5a (diff) | |
| download | emacs-88ba49fe356ecbb57f604158c432f1044d50b0bb.tar.gz | |
Fix coding.c subscript error
* coding.c (CODING_ISO_INVOKED_CHARSET):
Avoid undefined behavior if CODING_ISO_INVOCATION returns negative.
Diffstat (limited to 'src/coding.c')
| -rw-r--r-- | src/coding.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/coding.c b/src/coding.c index 77583d0d950..8dc39e74422 100644 --- a/src/coding.c +++ b/src/coding.c @@ -395,7 +395,8 @@ static Lisp_Object Vbig5_coding_system; #define CODING_ISO_BOL(coding) \ ((coding)->spec.iso_2022.bol) #define CODING_ISO_INVOKED_CHARSET(coding, plane) \ - CODING_ISO_DESIGNATION ((coding), CODING_ISO_INVOCATION ((coding), (plane))) + (CODING_ISO_INVOCATION (coding, plane) < 0 ? -1 \ + : CODING_ISO_DESIGNATION (coding, CODING_ISO_INVOCATION (coding, plane))) #define CODING_ISO_CMP_STATUS(coding) \ (&(coding)->spec.iso_2022.cmp_status) #define CODING_ISO_EXTSEGMENT_LEN(coding) \ |