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avfilter/formats: guard against double free

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This commit is contained in:
Paul B Mahol
2019-10-07 17:26:59 +02:00
parent c303d0979f
commit 9a53e01252
1 changed files with 5 additions and 3 deletions
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8
libavfilter/formats.c
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@@ -456,7 +456,7 @@ do { \
do { \
int idx = -1; \
\
if (!*ref || !(*ref)->refs) \
if (!ref || !*ref || !(*ref)->refs) \
return; \
\
FIND_REF_INDEX(ref, idx); \
@@ -518,7 +518,8 @@ void ff_formats_changeref(AVFilterFormats **oldref, AVFilterFormats **newref)
int ret = ref_fn(fmts, &ctx->inputs[i]->out_fmts); \
if (ret < 0) { \
unref_fn(&fmts); \
av_freep(&fmts->list); \
if (fmts) \
av_freep(&fmts->list); \
av_freep(&fmts); \
return ret; \
} \
@@ -530,7 +531,8 @@ void ff_formats_changeref(AVFilterFormats **oldref, AVFilterFormats **newref)
int ret = ref_fn(fmts, &ctx->outputs[i]->in_fmts); \
if (ret < 0) { \
unref_fn(&fmts); \
av_freep(&fmts->list); \
if (fmts) \
av_freep(&fmts->list); \
av_freep(&fmts); \
return ret; \
} \