File: format-strings-c90.c

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-16
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 1,496,368 kB
  • sloc: cpp: 5,593,980; ansic: 986,873; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,547; xml: 953; cs: 573; fortran: 567
file content (30 lines) | stat: -rw-r--r-- 1,453 bytes parent folder | download | duplicates (37)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/* RUN: %clang_cc1 -fsyntax-only -verify -triple i386-apple-darwin9 -Wformat-non-iso -std=c89 %s
 */

int scanf(const char * restrict, ...);
int printf(const char *restrict, ...);

void foo(char **sp, float *fp, int *ip) {
  scanf("%as", sp); /* expected-warning{{'a' length modifier is not supported by ISO C}} */
  scanf("%a[abc]", sp); /* expected-warning{{'a' length modifier is not supported by ISO C}} */

  /* TODO: Warn that the 'a' conversion specifier is a C99 feature. */
  scanf("%a", fp);
  scanf("%afoobar", fp);
  printf("%a", 1.0);
  printf("%as", 1.0);
  printf("%aS", 1.0);
  printf("%a[", 1.0);
  printf("%afoo", 1.0);

  scanf("%da", ip);

  /* Test argument type check for the 'a' length modifier. */
  scanf("%as", fp); /* expected-warning{{format specifies type 'char **' but the argument has type 'float *'}}
                       expected-warning{{'a' length modifier is not supported by ISO C}} */
  scanf("%aS", fp); /* expected-warning{{format specifies type 'wchar_t **' (aka 'int **') but the argument has type 'float *'}}
                       expected-warning{{'a' length modifier is not supported by ISO C}}
                       expected-warning{{'S' conversion specifier is not supported by ISO C}} */
  scanf("%a[abc]", fp); /* expected-warning{{format specifies type 'char **' but the argument has type 'float *'}}
                           expected-warning{{'a' length modifier is not supported by ISO C}} */
}