https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77490
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Author: mpolacek Date: Sat Sep 24 09:39:23 2016 New Revision: 240462 URL: https://gcc.gnu.org/viewcvs?rev=240462&root=gcc&view=rev Log: PR c/77490 * c.opt (Wbool-operation): New. * c-typeck.c (build_unary_op): Warn about bit not on expressions that have boolean value. Warn about ++/-- on booleans. * typeck.c (cp_build_unary_op): Warn about bit not on expressions that have boolean value. * doc/invoke.texi: Document -Wbool-operation. * c-c++-common/Wbool-operation-1.c: New test. * gcc.dg/Wbool-operation-1.c: New test. Added: trunk/gcc/testsuite/c-c++-common/Wbool-operation-1.c trunk/gcc/testsuite/gcc.dg/Wbool-operation-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/c-family/ChangeLog trunk/gcc/c-family/c.opt trunk/gcc/c/ChangeLog trunk/gcc/c/c-typeck.c trunk/gcc/cp/ChangeLog trunk/gcc/cp/typeck.c trunk/gcc/doc/invoke.texi trunk/gcc/testsuite/ChangeLog