https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121911
--- Comment #11 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by hongtao Liu <[email protected]>: https://gcc.gnu.org/g:4b39b84072e9a57e19761583950fe96b2611720e commit r17-1153-g4b39b84072e9a57e19761583950fe96b2611720e Author: H.J. Lu <[email protected]> Date: Wed May 6 20:58:47 2026 +0800 c/c++: Declare stack protection guard in file scope When stack protection guard is declared in c_common_nodes_and_builtins, it is put in the externals scope outside file scope which triggers -Wnested-externs warning in C: cc1: warning: nested extern declaration of '__stack_chk_guard' [-Wnested-externs] Declare stack protection guard in file scope instead. gcc/c-family/ PR c/121911 * c-common.cc (c_common_nodes_and_builtins): Don't declare stack protection guard here. gcc/c/ PR c/121911 * c-decl.cc (push_file_scope): Add stack protection guard to visible_builtins. gcc/cp/ PR c/121911 * decl.cc (cxx_init_decl_processing ): Declare stack protection guard after calling c_common_nodes_and_builtins. gcc/testsuite/ PR c/121911 * gcc.dg/Wnested-externs-1.c: Add -mstack-protector-guard=global for x86. Signed-off-by: H.J. Lu <[email protected]>
