https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99677
Bug ID: 99677
Summary: [[gnu::const]] attribute does not prevent dead global
variable gets emitted.
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: unlvsur at live dot com
Target Milestone: ---
https://godbolt.org/z/Toncas
The code tries to import functions from DLLs in the global.
Clang does not generate the nt_create_file function pointer, GCC does. Even at
-O0, clang emits no code. It only emits code any function actually uses it.
That is super annoying for Windows since we have no way to invoke Windows NT
syscalls without emitting dead code with GCC.
