From aac9480da1ffd037ceb21790fe341b3ec23283d9 Mon Sep 17 00:00:00 2001 From: Martin Sebor Date: Tue, 9 Jul 2019 04:15:42 +0000 Subject: PR middle-end/71924 - missing -Wreturn-local-addr returning alloca result PR middle-end/71924 - missing -Wreturn-local-addr returning alloca result PR middle-end/90549 - missing -Wreturn-local-addr maybe returning an address of a local array plus offset gcc/ChangeLog: PR middle-end/71924 PR middle-end/90549 * gimple-ssa-isolate-paths.c (isolate_path): Add attribute. Update comment. (args_loc_t): New type. (args_loc_t, locmap_t): same. (diag_returned_locals): New function. (is_addr_local): Same. (handle_return_addr_local_phi_arg, warn_return_addr_local): Same. (find_implicit_erroneous_behavior): Call warn_return_addr_local_phi_arg. (find_explicit_erroneous_behavior): Call warn_return_addr_local. gcc/testsuite/ChangeLog: PR middle-end/71924 PR middle-end/90549 * gcc.c-torture/execute/return-addr.c: New test. * gcc.dg/Wreturn-local-addr-2.c: New test. * gcc.dg/Wreturn-local-addr-4.c: New test. * gcc.dg/Wreturn-local-addr-5.c: New test. * gcc.dg/Wreturn-local-addr-6.c: New test. * gcc.dg/Wreturn-local-addr-7.c: New test. * gcc.dg/Wreturn-local-addr-8.c: New test. * gcc.dg/Wreturn-local-addr-9.c: New test. * gcc.dg/Wreturn-local-addr-10.c: New test. * gcc.dg/Walloca-4.c: Handle expected warnings. * gcc.dg/pr41551.c: Same. * gcc.dg/pr59523.c: Same. * gcc.dg/tree-ssa/pr88775-2.c: Same. * gcc.dg/tree-ssa/alias-37.c: Same. * gcc.dg/winline-7.c: Same. From-SVN: r273261 --- libgcc/generic-morestack.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'libgcc') diff --git a/libgcc/generic-morestack.c b/libgcc/generic-morestack.c index 0f6f000..2dc3733 100644 --- a/libgcc/generic-morestack.c +++ b/libgcc/generic-morestack.c @@ -23,6 +23,8 @@ a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see . */ +#pragma GCC optimize ("no-isolate-erroneous-paths-dereference") + /* powerpc 32-bit not supported. */ #if !defined __powerpc__ || defined __powerpc64__ -- cgit v1.1