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

[Oleksandr T. via cfe-commits]

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@@ -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
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a-tarasyuk wrote:

I've changed to `-pedantic`

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