On 14-05-2019 09:45 AM, Andreas Rheinhardt wrote:
b3b7ba62 introduced undefined behaviour: A (non-modifiable) string
literal has been assigned to a modifiable string; said string was indeed
modified later via av_strtok.
This of course caused compiler warnings because of the discarded
qualifier; these are in particular fixed by this commit.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
libavfilter/vf_stack.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/libavfilter/vf_stack.c b/libavfilter/vf_stack.c
index 1455f196a7..4d254e0013 100644
--- a/libavfilter/vf_stack.c
+++ b/libavfilter/vf_stack.c
@@ -84,9 +84,11 @@ static av_cold int init(AVFilterContext *ctx)
if (!strcmp(ctx->filter->name, "xstack")) {
if (!s->layout) {
- if (s->nb_inputs == 2)
- s->layout = "0_0|w0_0";
- else {
+ if (s->nb_inputs == 2) {
+ s->layout = av_strdup("0_0|w0_0");
+ if (!s->layout)
+ return AVERROR(ENOMEM);
+ } else {
av_log(ctx, AV_LOG_ERROR, "No layout specified.\n");
return AVERROR(EINVAL);
}
Sorry, I missed what was being done with the string later on.
Gyan
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