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comparison gcc/testsuite/gcc.dg/Wrestrict-5.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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children 1830386684a0
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111:04ced10e8804 131:84e7813d76e9
1 /* Test to verify that valid calls to common restrict-qualified built-in
2 functions declared with no prototype are checked for overlap, and that
3 invalid calls are ignored.
4 { dg-do compile }
5 { dg-options "-O2 -Wrestrict" } */
6
7 typedef __SIZE_TYPE__ size_t;
8
9 #if __cplusplus
10 extern "C" {
11
12 #define NO_PROTO ...
13 #else
14 #define NO_PROTO /* empty */
15 #endif
16
17 void* memcpy ();
18 char* strncpy ();
19
20 #if __cplusplus
21 } /* extern "C" */
22 #endif
23
24 void test_memcpy_warn (char *d)
25 {
26 memcpy (d, d + 2, 3); /* { dg-warning "accessing 3 bytes at offsets 0 and 2 overlaps 1 byte at offset 2" } */
27 }
28
29 void test_memcpy_nowarn (char *d)
30 {
31 memcpy (d, d + 2, "");
32 }
33
34
35 void test_strncpy_warn (char *d)
36 {
37 strncpy (d + 1, d + 3, 5); /* { dg-warning "accessing 5 bytes at offsets 1 and 3 overlaps 2 bytes at offset 3" } */
38 }
39
40 void test_strncpy_nowarn (char *d)
41 {
42 strncpy (d + 1, d + 3, "");
43 }