| // RUN: %clang_cc1 -std=c++20 -fsyntax-only -Wheader-guard -verify %s |
| |
| // Regression test for Lexer::peekNextPPToken() saving/restoring MIOpt state. |
| // In C++20 module mode, the preprocessor peeks the first pp-token in the main |
| // file before lexing begins. That must not perturb MIOpt state used for |
| // header-guard analysis. |
| |
| #ifndef GOOD_GUARD |
| #define BAD_GUARD |
| #endif |
| // expected-warning@-3 {{'GOOD_GUARD' is used as a header guard here, followed by #define of a different macro}} |
| // expected-note@-3 {{'BAD_GUARD' is defined here; did you mean 'GOOD_GUARD'?}} |
