It looks like this breaks tramp3d-v4.cpp which includes fenv.h:
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp: In function 'void
enable_fp_exceptions()':
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51965: error:
'fexcept_t' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51965: error:
expected `;' before 'f'
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51966: error: 'f'
was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51966: error:
'FE_INVALID' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51966: error:
'FE_DIVBYZERO' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51966: error:
'FE_OVERFLOW' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51966: error:
'FE_UNDERFLOW' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51966: error:
'fegetexceptflag' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51967: error:
'fesetexceptflag' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp: In function 'void
disable_fp_exceptions()':
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51971: error:
'FE_INEXACT' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51971: error:
'FE_DIVBYZERO' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51971: error:
'FE_UNDERFLOW' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51971: error:
'FE_OVERFLOW' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51971: error:
'FE_INVALID' was not declared in this scope
/gcc/spec/scripts/c++bench/tramp3d/tramp3d-v4.cpp:51971: error:
'feclearexcept' was not declared in this scope
How am I supposed to fix this?