File: Warray-bounds-67.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (36 lines) | stat: -rw-r--r-- 803 bytes parent folder | download | duplicates (2) 
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
35
36
 
/* Verify warnings fpr accesses to trailing one-element array members
   of a struct that's a member of either a struct or a union.  Both
   are obviously undefined but GCC relies on these hacks so the test
   verifies that -Warray-bounds doesn't trigger for it.
   { do-do compile }
   { dg-options "-O2 -Wall" } */


typedef union tree_node *tree;

struct tree_exp { int i; tree operands[1]; };

union tree_node
{
  struct tree_exp exp;
};

tree test_nowarn (tree t)
{
  return t->exp.operands[3];    // { dg-bogus "\\\[-Warray-bounds" }
}


typedef struct shrub_node *shrub;

struct shrub_exp { int i; shrub operands[1]; };

struct shrub_node
{
  struct shrub_exp exp;
};

shrub test_warn (shrub s)
{
  return s->exp.operands[3];    // { dg-warning "\\\[-Warray-bounds" "pr96346" { xfail *-*-* } }
}