| // RUN: %clang_cc1 -fsyntax-only -verify -Wformat-nonliteral %s |
| |
| typedef __typeof(sizeof(int)) size_t; |
| typedef struct _FILE FILE; |
| typedef __WCHAR_TYPE__ wchar_t; |
| |
| int fscanf(FILE * restrict, const char * restrict, ...) ; |
| int scanf(const char * restrict, ...) ; |
| int sscanf(const char * restrict, const char * restrict, ...) ; |
| |
| void test(const char *s, int *i) { |
| scanf(s, i); // expected-warning{{ormat string is not a string literal}} |
| scanf("%0d", i); // expected-warning{{zero field width in scanf format string is unused}} |
| scanf("%00d", i); // expected-warning{{zero field width in scanf format string is unused}} |
| scanf("%d%[asdfasdfd", i, s); // expected-warning{{no closing ']' for '%[' in scanf format string}} |
| |
| unsigned short s_x; |
| scanf ("%" "hu" "\n", &s_x); // no-warning |
| scanf("%y", i); // expected-warning{{invalid conversion specifier 'y'}} |
| scanf("%%"); // no-warning |
| scanf("%%%1$d", i); // no-warning |
| scanf("%1$d%%", i); // no-warning |
| scanf("%d", i, i); // expected-warning{{data argument not used by format string}} |
| scanf("%*d", i); // // expected-warning{{data argument not used by format string}} |
| scanf("%*d", i); // // expected-warning{{data argument not used by format string}} |
| scanf("%*d%1$d", i); // no-warning |
| } |
| |
| void bad_length_modifiers(char *s, void *p, wchar_t *ws, long double *ld) { |
| scanf("%hhs", "foo"); // expected-warning{{length modifier 'hh' results in undefined behavior or no effect with 's' conversion specifier}} |
| scanf("%1$zp", p); // expected-warning{{length modifier 'z' results in undefined behavior or no effect with 'p' conversion specifier}} |
| scanf("%ls", ws); // no-warning |
| scanf("%#.2Lf", ld); // expected-warning{{invalid conversion specifier '#'}} |
| } |
| |
| // Test that the scanf call site is where the warning is attached. If the |
| // format string is somewhere else, point to it in a note. |
| void pr9751() { |
| int *i; |
| const char kFormat1[] = "%00d"; // expected-note{{format string is defined here}}} |
| scanf(kFormat1, i); // expected-warning{{zero field width in scanf format string is unused}} |
| scanf("%00d", i); // expected-warning{{zero field width in scanf format string is unused}} |
| const char kFormat2[] = "%["; // expected-note{{format string is defined here}}} |
| scanf(kFormat2, &i); // expected-warning{{no closing ']' for '%[' in scanf format string}} |
| scanf("%[", &i); // expected-warning{{no closing ']' for '%[' in scanf format string}} |
| } |