hanchenye-llvm-project/clang/test/Preprocessor/comment_save_if.c

// RUN: %clang_cc1 %s -E -CC -pedantic -verify
// expected-no-diagnostics

#if 1 /*bar */

#endif /*foo*/

#if /*foo*/ defined /*foo*/ FOO /*foo*/
#if /*foo*/ defined /*foo*/ ( /*foo*/ FOO /*foo*/ ) /*foo*/
#endif
#endif