1 /* PR tree-optimization/86428 - strlen of const array initialized with
2    a string of the same length not folded
3    { dg-do compile }
4    { dg-options "-O0 -Wall -fdump-tree-gimple" } */
5 
6 #include "strlenopt.h"
7 
8 const char a1[1] = "\0";
9 const char a2[2] = "1\0";
10 const char a3[3] = "12\0";
11 const char a8[8] = "1234567\0";
12 const char a9[9] = "12345678\0";
13 
14 const char ax[9] = "12345678\0\0\0\0";   /* { dg-warning "initializer-string for array of chars is too long" } */
15 const char ay[9] = "\00012345678\0\0\0\0";   /* { dg-warning "initializer-string for array of chars is too long" } */
16 
17 
len1(void)18 int len1 (void)
19 {
20   size_t len0 = strlen (a1);
21   return len0;
22 }
23 
len(void)24 int len (void)
25 {
26   size_t len = strlen (a2) + strlen (a3) + strlen (a8) + strlen (a9);
27   return len;
28 }
29 
lenx(void)30 int lenx (void)
31 {
32   size_t lenx = strlen (ax);
33   return lenx;
34 }
35 
leny(void)36 int leny (void)
37 {
38   size_t leny = strlen (ay);
39   return leny;
40 }
41 
cmp88(void)42 int cmp88 (void)
43 {
44   int cmp88 = memcmp (a8, "1234567\0", sizeof a8);
45   return cmp88;
46 }
47 
48 /* { dg-final { scan-tree-dump-times "strlen" 0 "gimple" } }
49    { dg-final { scan-tree-dump-times "len0 = 0;" 1 "gimple" } }
50    { dg-final { scan-tree-dump-times "len = 18;" 1 "gimple" } }
51    { dg-final { scan-tree-dump-times "lenx = 8;" 1 "gimple" } }
52    { dg-final { scan-tree-dump-times "leny = 0;" 1 "gimple" } }
53    { dg-final { scan-tree-dump-times "cmp88 = 0;" 1 "gimple" } } */
54