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comparison gcc/testsuite/gcc.dg/builtin-alloc-size.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 /* PR c/78668 - aligned_alloc, realloc, et al. missing attribute alloc_size
2 Test to verify that memory allocation built-ins are decorated with
3 attribute alloc_size that __builtin_object_size can make use of (or
4 are treated as if they were for that purpose)..
5 { dg-do compile }
6 { dg-require-effective-target alloca }
7 { dg-additional-options "-O2 -fdump-tree-optimized" } */
8
9 void sink (void*);
10
11 unsigned size (unsigned n)
12 {
13 return n;
14 }
15
16 void test_aligned_alloc (unsigned a)
17 {
18 unsigned n = size (7);
19
20 void *p = __builtin_aligned_alloc (a, n);
21 if (__builtin_object_size (p, 0) != n)
22 __builtin_abort ();
23 sink (p);
24 }
25
26 void test_alloca (void)
27 {
28 unsigned n = size (13);
29
30 void *p = __builtin_alloca (n);
31
32 /* Also verify that alloca is declared with attribute returns_nonnull
33 (or treated as it were as the case may be). */
34 if (!p)
35 __builtin_abort ();
36
37 if (__builtin_object_size (p, 0) != n)
38 __builtin_abort ();
39 sink (p);
40 }
41
42 void test_calloc (void)
43 {
44 unsigned m = size (19);
45 unsigned n = size (23);
46
47 void *p = __builtin_calloc (m, n);
48 if (__builtin_object_size (p, 0) != m * n)
49 __builtin_abort ();
50 sink (p);
51 }
52
53 void test_malloc (void)
54 {
55 unsigned n = size (17);
56
57 void *p = __builtin_malloc (n);
58 if (__builtin_object_size (p, 0) != n)
59 __builtin_abort ();
60 sink (p);
61 }
62
63 void test_realloc (void *p)
64 {
65 unsigned n = size (31);
66
67 p = __builtin_realloc (p, n);
68 if (__builtin_object_size (p, 0) != n)
69 __builtin_abort ();
70 sink (p);
71 }
72
73 /* { dg-final { scan-tree-dump-not "abort" "optimized" } } */