File: c99-scope-1.c

package info (click to toggle)
gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 680,956 kB
  • sloc: ansic: 3,237,715; cpp: 896,882; ada: 772,854; f90: 144,254; asm: 68,788; makefile: 67,456; sh: 29,743; exp: 28,045; objc: 15,273; fortran: 11,885; python: 7,369; pascal: 5,375; awk: 3,725; perl: 2,872; yacc: 316; xml: 311; ml: 285; lex: 198; haskell: 122
file content (34 lines) | stat: -rw-r--r-- 703 bytes parent folder | download | duplicates (10) 
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
31
32
33
34
 
/* Test for new block scopes in C99.  Inspired by C99 Rationale (N897).  */
/* Origin: Joseph Myers <jsm28@cam.ac.uk> */
/* { dg-do run } */
/* { dg-options "-std=iso9899:1999 -pedantic-errors" } */

struct foo {
  char a;
};

extern void abort (void);
extern void exit (int);

int
sfoo (void)
{
  if (sizeof (struct foo { int a; double b; char *c; void *d; }))
    (void) 0;
  return sizeof (struct foo);
}

int
main (void)
{
  int t, u;
  t = sfoo ();
  u = sizeof (struct foo);
  /* With C90 scoping rules the new declaration of struct foo is in scope
     above; with C99 it is local to the if.
  */
  if (t == u)
    exit (0); /* C99 rules apply.  */
  else
    abort (); /* C90 rules apply.  */
}