18 lines
		
	
	
		
			621 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			18 lines
		
	
	
		
			621 B
		
	
	
	
		
			C
		
	
	
	
	
	
| /* RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify
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|  */
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| 
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| extern struct {int a;} x; // expected-note {{previous definition is here}}
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| extern struct {int a;} x; // expected-error {{redefinition of 'x'}}
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| 
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| struct x;
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| int a(struct x* b) {
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| // Per C99 6.7.2.3, since the outer and inner "struct x"es have different
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| // scopes, they don't refer to the same type, and are therefore incompatible
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| struct x {int a;} *c = b; // expected-warning {{incompatible pointer types}}
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| }
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| 
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| struct x {int a;} r;
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| int b() {
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| struct x {char x;} s = r; // expected-error {{initializing 'struct x' with an expression of incompatible type 'struct x'}}
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| }
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