| 1 | // RUN: %clang_cc1 -fsyntax-only -Wformat -verify %s -Wno-error=non-pod-varargs |
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| 2 | // RUN: %clang_cc1 -fsyntax-only -Wformat -verify -std=c++98 %s -Wno-error=non-pod-varargs |
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| 3 | // RUN: %clang_cc1 -fsyntax-only -Wformat -verify -std=c++11 %s -Wno-error=non-pod-varargs |
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| 4 | |
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| 5 | #include <stdarg.h> |
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| 6 | |
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| 7 | extern "C" { |
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| 8 | extern int printf(const char *restrict, ...); |
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| 9 | extern int sprintf(char *, const char *restrict, ...); |
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| 10 | } |
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| 11 | |
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| 12 | class HasCStr { |
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| 13 | const char *str; |
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| 14 | public: |
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| 15 | HasCStr(const char *s): str(s) { } |
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| 16 | const char *c_str() {return str;} |
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| 17 | }; |
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| 18 | |
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| 19 | class HasNoCStr { |
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| 20 | const char *str; |
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| 21 | public: |
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| 22 | HasNoCStr(const char *s): str(s) { } |
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| 23 | const char *not_c_str() {return str;} |
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| 24 | }; |
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| 25 | |
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| 26 | extern const char extstr[16]; |
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| 27 | void pod_test() { |
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| 28 | char str[] = "test"; |
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| 29 | char dest[32]; |
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| 30 | char formatString[] = "non-const %s %s"; |
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| 31 | HasCStr hcs(str); |
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| 32 | HasNoCStr hncs(str); |
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| 33 | int n = 10; |
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| 34 | |
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| 35 | printf("%d: %s\n", n, hcs.c_str()); |
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| 36 | printf("%d: %s\n", n, hcs); |
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| 37 | #if __cplusplus <= 199711L |
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| 38 | // expected-warning@-2 {{cannot pass non-POD object of type 'HasCStr' to variadic function; expected type from format string was 'char *'}} |
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| 39 | // expected-note@-3 {{did you mean to call the c_str() method?}} |
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| 40 | #else |
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| 41 | // expected-warning@-5 {{format specifies type 'char *' but the argument has type 'HasCStr'}} |
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| 42 | #endif |
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| 43 | |
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| 44 | printf("%d: %s\n", n, hncs); |
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| 45 | #if __cplusplus <= 199711L |
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| 46 | // expected-warning@-2 {{cannot pass non-POD object of type 'HasNoCStr' to variadic function; expected type from format string was 'char *'}} |
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| 47 | #else |
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| 48 | // expected-warning@-4 {{format specifies type 'char *' but the argument has type 'HasNoCStr'}} |
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| 49 | #endif |
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| 50 | |
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| 51 | sprintf(str, "%d: %s", n, hcs); |
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| 52 | #if __cplusplus <= 199711L |
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| 53 | // expected-warning@-2 {{cannot pass non-POD object of type 'HasCStr' to variadic function; expected type from format string was 'char *'}} |
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| 54 | // expected-note@-3 {{did you mean to call the c_str() method?}} |
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| 55 | #else |
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| 56 | // expected-warning@-5 {{format specifies type 'char *' but the argument has type 'HasCStr'}} |
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| 57 | #endif |
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| 58 | |
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| 59 | printf(formatString, hcs, hncs); |
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| 60 | #if __cplusplus <= 199711L |
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| 61 | // expected-warning@-2 {{cannot pass object of non-POD type 'HasCStr' through variadic function}} |
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| 62 | // expected-warning@-3 {{cannot pass object of non-POD type 'HasNoCStr' through variadic function}} |
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| 63 | #endif |
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| 64 | |
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| 65 | printf(extstr, hcs, n); |
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| 66 | #if __cplusplus <= 199711L |
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| 67 | // expected-warning@-2 {{cannot pass object of non-POD type 'HasCStr' through variadic function}} |
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| 68 | #endif |
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| 69 | } |
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| 70 | |
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| 71 | struct Printf { |
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| 72 | Printf(); |
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| 73 | Printf(const Printf&); |
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| 74 | Printf(const char *,...) __attribute__((__format__(__printf__,2,3))); |
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| 75 | }; |
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| 76 | |
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| 77 | void constructor_test() { |
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| 78 | const char str[] = "test"; |
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| 79 | HasCStr hcs(str); |
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| 80 | Printf p("%s %d %s", str, 10, 10); // expected-warning {{format specifies type 'char *' but the argument has type 'int'}} |
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| 81 | Printf q("%s %d", hcs, 10); |
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| 82 | #if __cplusplus <= 199711L |
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| 83 | // expected-warning@-2 {{cannot pass non-POD object of type 'HasCStr' to variadic constructor; expected type from format string was 'char *'}} |
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| 84 | // expected-note@-3 {{did you mean to call the c_str() method?}} |
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| 85 | #else |
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| 86 | // expected-warning@-5 {{format specifies type 'char *' but the argument has type 'HasCStr'}} |
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| 87 | #endif |
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| 88 | } |
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| 89 | |
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