https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709
--- Comment #11 from John David Anglin <danglin at gcc dot gnu.org> --- This is proving difficult to bisect due to _Floatn issues. I know commit b85e79dce149df68b92ef63ca2a40ff1dfa61396 is good and commit b939a5cc4143908ddda4b85a848c313136ff6e0c is bad. The following glibc change breaks gcc build when BASE-VER changes to 13. https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=3e5760fcb48528d48deeb60cb885a97bb731160c If I change __GNUC_PREREQ to 13, 1, I hit errors like: In file included from /home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/incl ude/cmath:45, from /home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/incl ude/complex:44, from ../../../../../gcc/libstdc++-v3/src/c++98/complex_io.cc:25 : /usr/include/math.h:1395:19: error: redefinition of ‘struct __iseqsig_type<float >’ 1395 | template<> struct __iseqsig_type<_Float32> | ^~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/math.h:1366:19: note: previous definition of ‘struct __iseqsig_type <float>’ 1366 | template<> struct __iseqsig_type<float> There are a lot of VRP changes for floats in the range that I haven't been able to bisect. | ^~~~~~~~~~~~~~~~~~~~~
