clang/test/Sema/format-strings-c90.c

   1 /* RUN: %clang_cc1 -fsyntax-only -verify -triple i386-apple-darwin9 -Wformat-non-iso -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 }