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Last change
on this file since 2037 was 2036, checked in by bird, 21 years ago |
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Initial revision
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Property cvs2svn:cvs-rev
set to
1.1
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Property svn:eol-style
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native
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Property svn:executable
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*
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Property svn:keywords
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Author Date Id Revision
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File size:
1.2 KB
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| 1 | /* Test assert_perror().
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| 2 | *
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| 3 | * This is hairier than you'd think, involving games with
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| 4 | * stdio and signals.
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| 5 | *
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| 6 | */
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| 7 |
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| 8 | #include <signal.h>
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| 9 | #include <stdlib.h>
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| 10 | #include <stdio.h>
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| 11 | #include <string.h>
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| 12 | #include <setjmp.h>
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| 13 |
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| 14 | jmp_buf rec;
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| 15 | char buf[160];
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| 16 |
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| 17 | static void
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| 18 | sigabrt (int unused)
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| 19 | {
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| 20 | longjmp (rec, 1); /* recover control */
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| 21 | }
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| 22 |
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| 23 | #undef NDEBUG
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| 24 | #include <assert.h>
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| 25 | static void
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| 26 | assert1 (void)
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| 27 | {
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| 28 | assert_perror (1);
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| 29 | }
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| 30 |
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| 31 | static void
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| 32 | assert2 (void)
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| 33 | {
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| 34 | assert_perror (0);
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| 35 | }
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| 36 |
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| 37 | #define NDEBUG
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| 38 | #include <assert.h>
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| 39 | static void
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| 40 | assert3 (void)
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| 41 | {
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| 42 | assert_perror (2);
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| 43 | }
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| 44 |
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| 45 | int
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| 46 | main(void)
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| 47 | {
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| 48 | volatile int failed = 1; /* safety in presence of longjmp() */
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| 49 |
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| 50 | fclose (stderr);
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| 51 | stderr = tmpfile ();
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| 52 | if (!stderr)
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| 53 | abort ();
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| 54 |
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| 55 | signal (SIGABRT, sigabrt);
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| 56 |
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| 57 | if (!setjmp (rec))
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| 58 | assert1 ();
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| 59 | else
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| 60 | failed = 0; /* should happen */
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| 61 |
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| 62 | if (!setjmp (rec))
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| 63 | assert2 ();
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| 64 | else
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| 65 | failed = 1; /* should not happen */
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| 66 |
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| 67 | if (!setjmp (rec))
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| 68 | assert3 ();
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| 69 | else
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| 70 | failed = 1; /* should not happen */
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| 71 |
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| 72 | rewind (stderr);
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| 73 | fgets (buf, 160, stderr);
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| 74 | if (!strstr(buf, strerror (1)))
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| 75 | failed = 1;
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| 76 |
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| 77 | fgets (buf, 160, stderr);
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| 78 | if (strstr (buf, strerror (0)))
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| 79 | failed = 1;
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| 80 |
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| 81 | fgets (buf, 160, stderr);
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| 82 | if (strstr (buf, strerror (2)))
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| 83 | failed = 1;
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| 84 |
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| 85 | return failed;
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| 86 | }
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