1 // RUN: %clang_cc1 -fsyntax-only -fdouble-square-bracket-attributes -verify %s
2
3 #if !__has_extension(gnu_asm)
4 #error Extension 'gnu_asm' should be available by default
5 #endif
6
f1(void)7 void f1(void) {
8 // PR7673: Some versions of GCC support an empty clobbers section.
9 asm ("ret" : : :);
10 }
11
f2(void)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'}}
a(void)21 void a(void) {
22 __asm__(""); // ok
23 }
24
25 // rdar://5952468
26 __asm ; // expected-error {{expected '(' after 'asm'}}
27
28 // <rdar://problem/10465079> - Don't crash on wide string literals in 'asm'.
29 int foo asm (L"bar"); // expected-error {{cannot use wide string literal in 'asm'}}
30
31 asm() // expected-error {{expected string literal in 'asm'}}
32 // expected-error@-1 {{expected ';' after top-level asm block}}
33
34 asm(; // expected-error {{expected string literal in 'asm'}}
35
36 asm("") // expected-error {{expected ';' after top-level asm block}}
37
38 // Unterminated asm strings at the end of the file were causing us to crash, so
39 // this needs to be last. rdar://15624081
40 // expected-warning@+3 {{missing terminating '"' character}}
41 // expected-error@+2 {{expected string literal in 'asm'}}
42 // expected-error@+1 {{expected ';' after top-level asm block}}
43 asm("
44