https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84900
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>: https://gcc.gnu.org/g:80ed2a6471a39dd95192a334789fd63d5efd2e8a commit r13-6836-g80ed2a6471a39dd95192a334789fd63d5efd2e8a Author: Andrew Pinski <apin...@marvell.com> Date: Thu Mar 23 02:10:11 2023 +0000 c: [PR84900] cast of compound literal does not cause the code to become a non-lvalue The problem here is after r0-92187-g2ec5deb5c3146c, maybe_lvalue_p would return false for compound literals which causes non_lvalue_loc not to wrap the expression with a NON_LVALUE_EXPR unlike before when it return true as it returns true for all language specific tree codes. This fixes that oversight and fixes the testcase to have the cast as a non-lvalue. Committed to the trunk as obvious after a bootstrap/test on x86_64-linux-gnu. PR c/84900 gcc/ChangeLog: * fold-const.cc (maybe_lvalue_p): Treat COMPOUND_LITERAL_EXPR as a lvalue. gcc/testsuite/ChangeLog: * gcc.dg/compound-literal-cast-lvalue-1.c: New test.
