llvm-project/clang/test/Sema/heinous-extensions-on.c

// RUN: %clang_cc1 %s -verify -fheinous-gnu-extensions

void foo() {
  int a;
  // PR3788
  asm("nop" : : "m"((int)(a))); // expected-warning {{cast in an inline asm context requiring an lvalue}}
  // PR3794
  asm("nop" : "=r"((unsigned)a)); // expected-warning {{cast in an inline asm context requiring an lvalue}}
}
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 2009-12-15 20:14:24 +00:00			`// RUN: %clang_cc1 %s -verify -fheinous-gnu-extensions`
introduce a new -fheinous-gnu-extensions flag that enables really really horrible extensions that are disabled by default but that can be accepted by -fheinous-gnu-extensions (but which always emit a warning when enabled). As our first instance of this, implement PR3788/PR3794, which allows non-lvalues in inline asms in contexts where lvalues are required. bleh. llvm-svn: 66910 2009-03-13 17:38:01 +00:00
Prep for new warning. llvm-svn: 76709 2009-07-22 00:43:08 +00:00			`void foo() {`
			`int a;`
			`// PR3788`
Consistent spelling in diagnostics: {l,r}value instead of {l,r}-value As Richard Smith pointed out in the review of D90123, both the C and C++ standard call it lvalue and rvalue, so let's stick to the same spelling in Clang. 2020-11-15 18:02:09 +01:00			`asm("nop" : : "m"((int)(a))); // expected-warning {{cast in an inline asm context requiring an lvalue}}`
Prep for new warning. llvm-svn: 76709 2009-07-22 00:43:08 +00:00			`// PR3794`
Consistent spelling in diagnostics: {l,r}value instead of {l,r}-value As Richard Smith pointed out in the review of D90123, both the C and C++ standard call it lvalue and rvalue, so let's stick to the same spelling in Clang. 2020-11-15 18:02:09 +01:00			`asm("nop" : "=r"((unsigned)a)); // expected-warning {{cast in an inline asm context requiring an lvalue}}`
introduce a new -fheinous-gnu-extensions flag that enables really really horrible extensions that are disabled by default but that can be accepted by -fheinous-gnu-extensions (but which always emit a warning when enabled). As our first instance of this, implement PR3788/PR3794, which allows non-lvalues in inline asms in contexts where lvalues are required. bleh. llvm-svn: 66910 2009-03-13 17:38:01 +00:00			`}`