1 // RUN: %clang_cc1 -fsyntax-only -verify -Wformat-nonliteral %s 2 3 typedef __typeof(sizeof(int)) size_t; 4 typedef struct _FILE FILE; 5 typedef __WCHAR_TYPE__ wchar_t; 6 7 int fscanf(FILE * restrict, const char * restrict, ...) ; 8 int scanf(const char * restrict, ...) ; 9 int sscanf(const char * restrict, const char * restrict, ...) ; 10 11 void test(const char *s, int *i) { 12 scanf(s, i); // expected-warning{{ormat string is not a string literal}} 13 scanf("%0d", i); // expected-warning{{zero field width in scanf format string is unused}} 14 scanf("%00d", i); // expected-warning{{zero field width in scanf format string is unused}} 15 scanf("%d%[asdfasdfd", i, s); // expected-warning{{no closing ']' for '%[' in scanf format string}} 16 17 unsigned short s_x; 18 scanf ("%" "hu" "\n", &s_x); // no-warning 19 scanf("%y", i); // expected-warning{{invalid conversion specifier 'y'}} 20 scanf("%%"); // no-warning 21 scanf("%%%1$d", i); // no-warning 22 scanf("%1$d%%", i); // no-warning 23 scanf("%d", i, i); // expected-warning{{data argument not used by format string}} 24 scanf("%*d", i); // // expected-warning{{data argument not used by format string}} 25 scanf("%*d", i); // // expected-warning{{data argument not used by format string}} 26 scanf("%*d%1$d", i); // no-warning 27 } 28 29 void bad_length_modifiers(char *s, void *p, wchar_t *ws, long double *ld) { 30 scanf("%hhs", "foo"); // expected-warning{{length modifier 'hh' results in undefined behavior or no effect with 's' conversion specifier}} 31 scanf("%1$zp", p); // expected-warning{{length modifier 'z' results in undefined behavior or no effect with 'p' conversion specifier}} 32 scanf("%ls", ws); // no-warning 33 scanf("%#.2Lf", ld); // expected-warning{{invalid conversion specifier '#'}} 34 } 35
