2020.01.20. 14:25 keltezéssel, Carl Eugen Hoyos írta:
Am Mo., 20. Jan. 2020 um 14:18 Uhr schrieb Bodecs Bela <bode...@vivanet.hu>:
2020.01.20. 14:02 keltezéssel, Carl Eugen Hoyos írta:
This patch corrects compiler warning about returning possibly uninitialized
variable in hls_write_header function.
Which compiler warns about this?
libavformat/hlsenc.c: In function ‘hls_write_header’:
libavformat/hlsenc.c:2174: warning: ‘ret’ may be used uninitialized in
this function
Looks like a false positive, does not warn with newer compilers.
yes and no.
no, because if hls->nb_varstreams == 0, then for loop body never
executes and so ret does not get any value.
yes, because there is no chance for hls->nb_varstreams to be zero.
so, I think setting ret to 0 at its declaration does not do any problem
and logically right.
No, update your compiler instead.
which of my statements did your "No" reference?
Both.
Thank you for your help. Maybe due to my poor english, but I really do
not see,
I really did test with other compiler and really did not give warning
any longer,
but it does not help that the ret varaiable remain uninitalized but may
be returned.
As I know theoretically there is no default value of an int variable.
So why the warning did disappear?
I believe newer compilers detect that hls->nb_varstreams cannot
be zero.
ok
Carl Eugen
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