https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40752
--- Comment #36 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:55b7df8bfb12938e7716445d4e2dc0d2ddf44bac commit r10-6157-g55b7df8bfb12938e7716445d4e2dc0d2ddf44bac Author: Jason Merrill <ja...@redhat.com> Date: Wed Jan 22 14:21:06 2020 -0500 c-family: Fix problems with blender and PPC from PR 40752 patch. blender in SPEC is built with -funsigned-char, which is also the default on PPC, and exposed -Wsign-conversion issues that weren't seen by the x86_64 testsuite. In blender we were complaining about operands to an expression that we didn't't previously complain about as a whole. So only check operands after we check the whole expression. Also, to fix the PR 40752 testcases on -funsigned-char targets, don't consider -Wsign-conversion for the second operand of PLUS_EXPR, especially since fold changes "x - 5" to "x + (-5)". And don't use SCHAR_MAX with plain char. PR testsuite/93391 - PR 40752 test fails with unsigned plain char. PR c++/40752 * c-warn.c (conversion_warning): Check operands only after checking the whole expression. Don't check second operand of + for sign.
