33 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			33 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			C++
		
	
	
	
| // RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
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| 
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| class A {
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| public:
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|   A(): str() { }
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|   A(const char *p) { }
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|   A(char *p) : str(p + 'a') { } // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}
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|   A& operator+(const char *p) { return *this; }
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|   A& operator+(char ch) { return *this; }
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|   char * str;
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| };
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| 
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| void f(const char *s) {
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|   A a = s + 'a'; // // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}
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|   a = a + s + 'b'; // no-warning
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| 
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|   char *str = 0;
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|   char *str2 = str + 'c'; // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}
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| 
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|   const char *constStr = s + 'c'; // expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}
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| 
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|   str = 'c' + str;// expected-warning {{adding 'char' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}
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| 
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|   wchar_t *wstr;
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|   wstr = wstr + L'c'; // expected-warning {{adding 'wchar_t' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}
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|   str2 = str + u'a'; // expected-warning {{adding 'char16_t' to a string pointer does not append to the string}} expected-note {{use array indexing to silence this warning}}
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| 
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|   // no-warning
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|   char c = 'c';
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|   str = str + c;
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|   str = c + str;
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| }
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