Hi Jakub,
The following patch makes use of the new __builtin_issignaling, so it no longer needs the fallback implementation and can use the builtin even where glibc provides the macro. Bootstrapped/regtested on x86_64-linux, i686-linux, powerpc64le-linux and powerpc64le-linux, ok for trunk?
OK. Can you mention PR 105105 in the ChangeLog when you commit? Thanks for the patch! Best regards Thomas