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Commit | Line | Data |
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ba9234d9 UD |
1 | /* Test assert_perror(). |
2 | * | |
3 | * This is hairier than you'd think, involving games with | |
4 | * stdio and signals. | |
5 | * | |
6 | */ | |
7 | ||
8 | #include <signal.h> | |
9 | #include <stdlib.h> | |
10 | #include <stdio.h> | |
11 | #include <string.h> | |
12 | #include <setjmp.h> | |
13 | ||
14 | jmp_buf rec; | |
15 | char buf[160]; | |
16 | ||
17 | void | |
18 | sigabrt (int unused) | |
19 | { | |
20 | longjmp (rec, 1); /* recover control */ | |
21 | } | |
22 | ||
23 | #undef NDEBUG | |
24 | #include <assert.h> | |
25 | void | |
26 | assert1 (void) | |
27 | { | |
28 | assert_perror (1); | |
29 | } | |
30 | ||
31 | void | |
32 | assert2 (void) | |
33 | { | |
34 | assert_perror (0); | |
35 | } | |
36 | ||
37 | #define NDEBUG | |
38 | #include <assert.h> | |
39 | void | |
40 | assert3 (void) | |
41 | { | |
42 | assert_perror (2); | |
43 | } | |
44 | ||
45 | int | |
46 | main(void) | |
47 | { | |
48 | volatile int failed = 1; /* safety in presence of longjmp() */ | |
49 | ||
50 | fclose (stderr); | |
51 | stderr = tmpfile (); | |
52 | if (!stderr) | |
53 | abort (); | |
54 | ||
55 | signal (SIGABRT, sigabrt); | |
56 | ||
57 | if (!setjmp (rec)) | |
58 | assert1 (); | |
59 | else | |
60 | failed = 0; /* should happen */ | |
61 | ||
62 | if (!setjmp (rec)) | |
63 | assert2 (); | |
64 | else | |
65 | failed = 1; /* should not happen */ | |
66 | ||
67 | if (!setjmp (rec)) | |
68 | assert3 (); | |
69 | else | |
70 | failed = 1; /* should not happen */ | |
71 | ||
72 | rewind (stderr); | |
73 | fgets (buf, 160, stderr); | |
74 | if (!strstr(buf, strerror (1))) | |
75 | failed = 1; | |
76 | ||
77 | fgets (buf, 160, stderr); | |
78 | if (strstr (buf, strerror (0))) | |
79 | failed = 1; | |
80 | ||
81 | fgets (buf, 160, stderr); | |
82 | if (strstr (buf, strerror (2))) | |
83 | failed = 1; | |
84 | ||
85 | return failed; | |
86 | } |