test_libFLAC fails for Debug builds on Windows

[epoitier]

I am creating using cmake the solution file with the command line below for Win32 and x64 targets:

cmake -G "Visual Studio 18 2026" -A Win32 -DBUILD_CXXLIBS=ON -DBUILD_PROGRAMS=ON -DBUILD_EXAMPLES=ON -DBUILD_TESTING=ON -DWITH_OGG=OFF -DBUILD_SHARED_LIBS=OFF -DINSTALL_MANPAGES=OFF -DWITH_AVX=OFF -DWITH_ASM=OFF

When executing the test_libFLAC project, I have the following error returned on the console:

testing FLAC__stream_decoder_get_link_lengths()... OK testing FLAC__stream_decoder_find_total_samples... Number of samples returned is 0... FAILED, returned wrong number of samples, state = 0 (FLAC__STREAM_DECODER_SEARCH_FOR_METADATA)

In release, it does not fail. Please note I have optimisation for Release build (which I create a separated solution different from the one I copied the command line) and not for Debug build.

[ktmf01]

Could you post a little more context of the error?

[epoitier]

It fails on the code below from file decoders.c:577 in the test_libFLAC project, using v1.5.0:

printf("testing FLAC__stream_decoder_find_total_samples... ");
total_samples = FLAC__stream_decoder_find_total_samples(decoder);
printf("Number of samples returned is %" PRIu64 "... ",total_samples);
if((layer == LAYER_STREAM && total_samples != 0) ||
(layer != LAYER_STREAM && is_chained_ogg && total_samples != (samples_ * 2)) ||
(layer != LAYER_STREAM && !is_chained_ogg && total_samples != samples_))
return die_s_("returned wrong number of samples", decoder);

It fails when layer==LAYER_SEEKABLE_STREAM where total_samples is at 0 (no samples found), where it should be 524288.