Richard Smith | 831421f | 2012-06-25 20:30:08 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fsyntax-only -Wformat -verify %s -Wno-error=non-pod-varargs |
| 2 | |
| 3 | #include <stdarg.h> |
| 4 | |
| 5 | extern "C" { |
| 6 | extern int printf(const char *restrict, ...); |
| 7 | extern int sprintf(char *, const char *restrict, ...); |
| 8 | } |
| 9 | |
| 10 | class HasCStr { |
| 11 | const char *str; |
| 12 | public: |
| 13 | HasCStr(const char *s): str(s) { } |
| 14 | const char *c_str() {return str;} |
| 15 | }; |
| 16 | |
| 17 | class HasNoCStr { |
| 18 | const char *str; |
| 19 | public: |
| 20 | HasNoCStr(const char *s): str(s) { } |
| 21 | const char *not_c_str() {return str;} |
| 22 | }; |
| 23 | |
| 24 | extern const char extstr[16]; |
| 25 | void pod_test() { |
| 26 | char str[] = "test"; |
| 27 | char dest[32]; |
| 28 | char formatString[] = "non-const %s %s"; |
| 29 | HasCStr hcs(str); |
| 30 | HasNoCStr hncs(str); |
| 31 | int n = 10; |
| 32 | |
| 33 | printf("%d: %s\n", n, hcs.c_str()); |
| 34 | printf("%d: %s\n", n, hcs); // expected-warning{{cannot pass non-POD object of type 'HasCStr' to variadic function; expected type from format string was 'char *'}} expected-note{{did you mean to call the c_str() method?}} |
| 35 | printf("%d: %s\n", n, hncs); // expected-warning{{cannot pass non-POD object of type 'HasNoCStr' to variadic function; expected type from format string was 'char *'}} |
| 36 | sprintf(str, "%d: %s", n, hcs); // expected-warning{{cannot pass non-POD object of type 'HasCStr' to variadic function; expected type from format string was 'char *'}} expected-note{{did you mean to call the c_str() method?}} |
| 37 | |
| 38 | printf(formatString, hcs, hncs); // expected-warning{{cannot pass object of non-POD type 'HasCStr' through variadic function}} expected-warning{{cannot pass object of non-POD type 'HasNoCStr' through variadic function}} |
| 39 | printf(extstr, hcs, n); // expected-warning{{cannot pass object of non-POD type 'HasCStr' through variadic function}} |
| 40 | } |
| 41 | |
| 42 | struct Printf { |
| 43 | Printf(); |
| 44 | Printf(const Printf&); |
| 45 | Printf(const char *,...) __attribute__((__format__(__printf__,2,3))); |
| 46 | }; |
| 47 | |
| 48 | void constructor_test() { |
| 49 | const char str[] = "test"; |
| 50 | HasCStr hcs(str); |
| 51 | Printf p("%s %d %s", str, 10, 10); // expected-warning {{format specifies type 'char *' but the argument has type 'int'}} |
Jordan Rose | ddcfbc9 | 2012-07-19 18:10:23 +0000 | [diff] [blame] | 52 | Printf q("%s %d", hcs, 10); // expected-warning {{cannot pass non-POD object of type 'HasCStr' to variadic constructor; expected type from format string was 'char *'}} expected-note{{did you mean to call the c_str() method?}} |
Richard Smith | 831421f | 2012-06-25 20:30:08 +0000 | [diff] [blame] | 53 | } |