[clang] [Clang] strengthen checks for 'main' function to meet [basic.start.main] p3 requirements (PR #101853)

[via cfe-commits]

================
@@ -8,6 +8,9 @@
 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST8
 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST9
 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST10 -ffreestanding
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic-errors %s -DTEST11
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic-errors %s -DTEST12
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic-errors %s -DTEST13
----------------
Sirraide wrote:

I’d prefer just `-pedantic` or `-Wmain` here so we can test that the warnings are actually warnings as they should be

https://github.com/llvm/llvm-project/pull/101853