On Wed, 12 Sep 2018, Martin Storsjö wrote:
MSVC expands the preprocessor directives differently, making the version check fail in the previous form. --- I'm pretty sure I've seen a better description of this issue somewhere, I don't remember off-hand right now where that was. But I think the gist of it was that the previous form was undefined according to the C standard, even if GCC and clang handle it in the same way.
This is similar to 5e3f6dc70198426fe0741e3017826b8bf3ee5ad8, which points out that if building with -Wexpansion-to-defined, the compiler (at least clang) would warn about it, clarifying that macro expansion of 'defined' has undefined behaviour.
// Martin _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel
