llvm-project/clang/test/Preprocessor/pragma.c

// RUN: %clang_cc1 -E %s | FileCheck %s

#pragma clang __debug parser_crash
#pragma clang __debug dump Test

// CHECK: #pragma clang __debug parser_crash
// FIXME: The dump parameter is dropped.
// CHECK: #pragma clang __debug dump{{$}}
Fix combining pragma __debug dump & parser_crash with -E Previously these would be transformed into annotation tokens and the preprocessor would then assume they were real tokens with source locations and assert/UB. Other pragmas that produce annotation tokens aren't a problem because they aren't handled if the parser isn't hooked up - ParsePragma.cpp registers those handlers & isn't run for pure preprocessing. So they're treated as unknown pragmas & printed verbatim by the preprocessor. Perhaps these pragmas should be treated the same way? But they got mixed in with other __debug pragmas that do need to be handled during preprocessing. The third __debug pragma that produces an annotation token is 'captured' - which had its own fix for this issue - by not inserting the annotation token in the first place if it detected that it was in preprocessing mode. I've removed that fix (from Lex/Pragma.cpp) in favor of the more general one in Frontend/PrintPreprocessedOutput.cpp. llvm-svn: 346928 2018-11-15 11:04:21 +08:00			`// RUN: %clang_cc1 -E %s \| FileCheck %s`

			`#pragma clang __debug parser_crash`
			`#pragma clang __debug dump Test`

			`// CHECK: #pragma clang __debug parser_crash`
			`// FIXME: The dump parameter is dropped.`
			`// CHECK: #pragma clang __debug dump{{$}}`