clang/test/Parser/asm.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 #if !__has_extension(gnu_asm)
   4 #error Extension 'gnu_asm' should be available by default
   5 #endif
   6
   7 void f1(void) {
   8   // PR7673: Some versions of GCC support an empty clobbers section.
   9   asm ("ret" : : :);
  10 }
  11
  12 void f2(void) {
  13   asm("foo" : "=r" (a)); // expected-error {{use of undeclared identifier 'a'}}
  14   asm("foo" : : "r" (b)); // expected-error {{use of undeclared identifier 'b'}}
  15
  16   [[]] asm("");
  17   [[gnu::deprecated]] asm(""); // expected-warning {{'deprecated' attribute ignored}}
  18 }
  19
  20 void a(void) __asm__(""); // expected-error {{cannot use an empty string literal in 'asm'}}
  21 void a(void) {
  22   __asm__(""); // ok
  23 }
  24
  25 __asm ; // expected-error {{expected '(' after 'asm'}}
  26
  27 // Don't crash on wide string literals in 'asm'.
  28 int foo asm (L"bar"); // expected-error {{cannot use wide string literal in 'asm'}}
  29
  30 asm() // expected-error {{expected string literal in 'asm'}}
  31 // expected-error@-1 {{expected ';' after top-level asm block}}
  32
  33 asm(; // expected-error {{expected string literal in 'asm'}}
  34
  35 asm("") // expected-error {{expected ';' after top-level asm block}}
  36
  37 // Unterminated asm strings at the end of the file were causing us to crash, so
  38 // this needs to be last.
  39 // expected-warning@+3 {{missing terminating '"' character}}
  40 // expected-error@+2 {{expected string literal in 'asm'}}
  41 // expected-error@+1 {{expected ';' after top-level asm block}}
  42 asm("