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comparison gcc/testsuite/gcc.c-torture/execute/noinit-attribute.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 /* { dg-do run } */
2 /* { dg-require-effective-target noinit } */
3 /* { dg-options "-O2" } */
4
5 /* This test checks that noinit data is handled correctly. */
6
7 extern void _start (void) __attribute__ ((noreturn));
8 extern void abort (void) __attribute__ ((noreturn));
9 extern void exit (int) __attribute__ ((noreturn));
10
11 int var_common;
12 int var_zero = 0;
13 int var_one = 1;
14 int __attribute__((noinit)) var_noinit;
15 int var_init = 2;
16
17 int __attribute__((noinit)) func(); /* { dg-warning "attribute only applies to variables" } */
18 int __attribute__((section ("mysection"), noinit)) var_section1; /* { dg-warning "because it conflicts with attribute" } */
19 int __attribute__((noinit, section ("mysection"))) var_section2; /* { dg-warning "because it conflicts with attribute" } */
20
21
22 int
23 main (void)
24 {
25 /* Make sure that the C startup code has correctly initialized the ordinary variables. */
26 if (var_common != 0)
27 abort ();
28
29 /* Initialized variables are not re-initialized during startup, so
30 check their original values only during the first run of this
31 test. */
32 if (var_init == 2)
33 if (var_zero != 0 || var_one != 1)
34 abort ();
35
36 switch (var_init)
37 {
38 case 2:
39 /* First time through - change all the values. */
40 var_common = var_zero = var_one = var_noinit = var_init = 3;
41 break;
42
43 case 3:
44 /* Second time through - make sure that d has not been reset. */
45 if (var_noinit != 3)
46 abort ();
47 exit (0);
48
49 default:
50 /* Any other value for var_init is an error. */
51 abort ();
52 }
53
54 /* Simulate a processor reset by calling the C startup code. */
55 _start ();
56
57 /* Should never reach here. */
58 abort ();
59 }