File: pta-ptrarith-2.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 (25 lines) | stat: -rw-r--r-- 441 bytes parent folder | download | duplicates (5) 
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
 
/* { dg-do compile } */
/* { dg-options "-O2 -fno-tree-forwprop -fno-tree-ccp -fdump-tree-ealias" } */

extern void abort (void);
struct X {
  int *p;
  int *q;
  int *r;
};
int __attribute__((noinline))
foo(int i, int j, int k, int off)
{
  struct X x;
  int **p, *q;
  x.p = &i;
  x.q = &j;
  x.r = &k;
  p = &x.q;
  p -= 1;
  /* *p points to { i } */
  q = *p;
  return *q;
}

/* { dg-final { scan-tree-dump "q_. = { i }" "ealias" } } */