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Last change
on this file was 2036, checked in by bird, 20 years ago |
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Initial revision
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Property cvs2svn:cvs-rev
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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().
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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 (1 == 2);
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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 (1 == 1);
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| 35 | }
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| 36 |
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| 37 |
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| 38 | #define NDEBUG
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| 39 | #include <assert.h>
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| 40 | static void
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| 41 | assert3 (void)
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| 42 | {
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| 43 | assert (2 == 3);
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| 44 | }
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| 45 |
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| 46 | int
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| 47 | main (void)
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| 48 | {
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| 49 |
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| 50 | volatile int failed = 1;
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| 51 |
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| 52 | fclose (stderr);
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| 53 | stderr = tmpfile ();
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| 54 | if(!stderr)
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| 55 | abort ();
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| 56 |
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| 57 | signal (SIGABRT, sigabrt);
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| 58 |
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| 59 | if (!setjmp (rec))
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| 60 | assert1 ();
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| 61 | else
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| 62 | failed = 0; /* should happen */
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| 63 |
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| 64 | if (!setjmp (rec))
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| 65 | assert2 ();
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| 66 | else
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| 67 | failed = 1; /* should not happen */
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| 68 |
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| 69 | if (!setjmp (rec))
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| 70 | assert3 ();
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| 71 | else
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| 72 | failed = 1; /* should not happen */
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| 73 |
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| 74 | rewind (stderr);
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| 75 | fgets (buf, 160, stderr);
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| 76 | if (!strstr (buf, "1 == 2"))
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| 77 | failed = 1;
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| 78 |
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| 79 | fgets (buf, 160, stderr);
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| 80 | if (strstr (buf, "1 == 1"))
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| 81 | failed = 1;
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| 82 |
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| 83 | fgets (buf, 160, stderr);
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| 84 | if (strstr (buf, "2 == 3"))
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| 85 | failed = 1;
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| 86 |
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| 87 | return failed;
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| 88 | }
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