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av_dict_set: fix potential memory leak with AV_DICT_DONT_OVERWRITE 

av_dict_set leaks it key/value arguments if AV_DICT_DONT_OVERWRITE is
combined with AV_DICT_DONT_STRDUP_{KEY,VAL} and the key exists.
This commit is contained in:
Janne Grunau 2014-06-08 17:53:31 +02:00
parent 7b06ddb835
commit 1619274fb3
1 changed files with 4 additions and 1 deletions
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5
libavutil/dict.c
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@ -76,8 +76,11 @@ int av_dict_set(AVDictionary **pm, const char *key, const char *value,
m = *pm = av_mallocz(sizeof(*m));
if (tag) {
if (flags & AV_DICT_DONT_OVERWRITE)
if (flags & AV_DICT_DONT_OVERWRITE) {
if (flags & AV_DICT_DONT_STRDUP_KEY) av_free(key);
if (flags & AV_DICT_DONT_STRDUP_VAL) av_free(value);
return 0;
}
if (flags & AV_DICT_APPEND)
oldval = tag->value;
else