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llvm-project/clang/test/Preprocessor/c90.c

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Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446
2009-12-16 04:14:24 +08:00
/* RUN: %clang_cc1 %s -std=c89 -Eonly -verify -pedantic-errors
Preprocessor: don't consider // to be a line comment in -E -std=c89 mode. It's beneficial when compiling to treat // as the start of a line comment even in -std=c89 mode, since it's not valid C code (with a few rare exceptions) and is usually intended as such. We emit a pedantic warning and then continue on as if line comments were enabled. This has been our behavior for quite some time. However, people use the preprocessor for things besides C source files. In today's prompting example, the input contains (unquoted) URLs, which contain // but should still be preserved. This change instructs the lexer to treat // as a plain token if Clang is in C90 mode and generating preprocessed output rather than actually compiling. <rdar://problem/13338743> llvm-svn: 176526
2013-03-06 06:51:04 +08:00
* RUN: %clang_cc1 %s -std=c89 -E | FileCheck %s
enforce requirements imposed by C90 6.8 TC1, fixing PR3919. llvm-svn: 69415
2009-04-18 10:23:25 +08:00
*/
/* PR3919 */
#define foo`bar /* expected-error {{whitespace required after macro name}} */
this is really just a recommendation, not a requirement. llvm-svn: 69416
2009-04-18 10:25:14 +08:00
#define foo2!bar /* expected-warning {{whitespace recommended after macro name}} */
enforce requirements imposed by C90 6.8 TC1, fixing PR3919. llvm-svn: 69415
2009-04-18 10:23:25 +08:00
#define foo3$bar /* expected-error {{'$' in identifier}} */
Preprocessor: don't consider // to be a line comment in -E -std=c89 mode. It's beneficial when compiling to treat // as the start of a line comment even in -std=c89 mode, since it's not valid C code (with a few rare exceptions) and is usually intended as such. We emit a pedantic warning and then continue on as if line comments were enabled. This has been our behavior for quite some time. However, people use the preprocessor for things besides C source files. In today's prompting example, the input contains (unquoted) URLs, which contain // but should still be preserved. This change instructs the lexer to treat // as a plain token if Clang is in C90 mode and generating preprocessed output rather than actually compiling. <rdar://problem/13338743> llvm-svn: 176526
2013-03-06 06:51:04 +08:00
/* CHECK-NOT: this comment should be missing
* CHECK: {{^}}// this comment should be present{{$}}
*/
// this comment should be present