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comparison gcc/testsuite/gcc.dg/uninit-pred-4_b.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* { dg-do compile } */
2 /* { dg-options "-Wuninitialized -O2" } */
3
4 int g;
5 void bar();
6 void blah(int);
7 int foo (int n, int m, int r, int t)
8 {
9 int flag = 0;
10 int v;
11
12 if (t)
13 {
14 if (n)
15 {
16 v = r; /* init path 1 */
17 flag = 1;
18 }
19
20 if (m) g++;
21 else bar();
22
23 if (flag) /* properly guarded */
24 blah(v); /* { dg-bogus "uninitialized" "bogus warning" } */
25 }
26 else
27 {
28 v = r+1; /* init path 2 */
29 flag = 2;
30 }
31
32 if (m) g++;
33 else bar();
34
35 if (g) /* guard can not be determined statically to be safe */
36 blah(v); /* { dg-warning "uninitialized" "real warning" } */
37
38 return 0;
39 }
40