https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113776
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Joseph Myers <js...@gcc.gnu.org>: https://gcc.gnu.org/g:bfd72bb44eca83b0db2b0bab895f27a8a44247a2 commit r14-8874-gbfd72bb44eca83b0db2b0bab895f27a8a44247a2 Author: Joseph Myers <josmy...@redhat.com> Date: Thu Feb 8 01:34:09 2024 +0000 c: Fix boolean conversion of floating constant as integer constant expression [PR113776] My fix for bug 111059 and bug 111911 caused a conversion of a floating constant to boolean to wrongly no longer be considered an integer constant expression, because logic to insert a NOP_EXPR in c_objc_common_truthvalue_conversion for an argument not an integer constant expression itself now took place after rather than before the conversion to bool. In the specific case of casting a floating constant to bool, the result is an integer constant expression even though the argument isn't (build_c_cast deals with ensuring that casts to integer type of anything of floating type more complicated than a single floating constant don't get wrongly treated as integer constant expressions even if they fold to constants), so fix the logic in c_objc_common_truthvalue_conversion to handle that special case. Bootstrapped with no regressions for x86_64-pc-linux-gnu. PR c/113776 gcc/c * c-typeck.cc (c_objc_common_truthvalue_conversion): Return an integer constant expression for boolean conversion of floating constant. gcc/testsuite/ * gcc.dg/pr113776-1.c, gcc.dg/pr113776-2.c, gcc.dg/pr113776-3.c, gcc.dg/pr113776-4.c: New tests.
