| 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 (env: rec, val: 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, handler: 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 (s: buf, n: 160, stderr); |
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| 74 | if (!strstr(buf, strerror (errnum: 1))) |
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| 75 | failed = 1; |
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| 76 | |
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| 77 | fgets (s: buf, n: 160, stderr); |
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| 78 | if (strstr (buf, strerror (errnum: 0))) |
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| 79 | failed = 1; |
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| 80 | |
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| 81 | fgets (s: buf, n: 160, stderr); |
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| 82 | if (strstr (buf, strerror (errnum: 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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| 87 | |
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