1 /* RUN: %clang_cc1 -fsyntax-only -verify -triple i386-apple-darwin9 -pedantic -std=c89 %s 2 */ 3 4 int scanf(const char * restrict, ...); 5 int printf(const char *restrict, ...); 6 7 void foo(char **sp, float *fp, int *ip) { 8 scanf("%as", sp); /* expected-warning{{'a' length modifier is not supported by ISO C}} */ 9 scanf("%a[abc]", sp); /* expected-warning{{'a' length modifier is not supported by ISO C}} */ 10 11 /* TODO: Warn that the 'a' conversion specifier is a C99 feature. */ 12 scanf("%a", fp); 13 scanf("%afoobar", fp); 14 printf("%a", 1.0); 15 printf("%as", 1.0); 16 printf("%aS", 1.0); 17 printf("%a[", 1.0); 18 printf("%afoo", 1.0); 19 20 scanf("%da", ip); 21 22 /* Test argument type check for the 'a' length modifier. */ 23 scanf("%as", fp); /* expected-warning{{format specifies type 'char **' but the argument has type 'float *'}} 24 expected-warning{{'a' length modifier is not supported by ISO C}} */ 25 scanf("%aS", fp); /* expected-warning{{format specifies type 'wchar_t **' (aka 'int **') but the argument has type 'float *'}} 26 expected-warning{{'a' length modifier is not supported by ISO C}} 27 expected-warning{{'S' conversion specifier is not supported by ISO C}} */ 28 scanf("%a[abc]", fp); /* expected-warning{{format specifies type 'char **' but the argument has type 'float *'}} 29 expected-warning{{'a' length modifier is not supported by ISO C}} */ 30 } 31
