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author | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
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committer | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
commit | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch) | |
tree | 2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /libio/bug-memstream1.c | |
parent | 7d58530341304d403a6626d7f7a1913165fe2f32 (diff) | |
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2.5-18.1
Diffstat (limited to 'libio/bug-memstream1.c')
-rw-r--r-- | libio/bug-memstream1.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/libio/bug-memstream1.c b/libio/bug-memstream1.c new file mode 100644 index 0000000000..8af36fee2d --- /dev/null +++ b/libio/bug-memstream1.c @@ -0,0 +1,133 @@ +#include <stdio.h> +#include <string.h> + + +static int +do_test (void) +{ + size_t size; + char *buf; + FILE *fp = open_memstream (&buf, &size); + if (fp == NULL) + { + puts ("open_memstream failed"); + return 1; + } + + off64_t off = ftello64 (fp); + if (off != 0) + { + puts ("initial position wrong"); + return 1; + } + + if (fseek (fp, 32768, SEEK_SET) != 0) + { + puts ("fseek failed"); + return 1; + } + + if (fputs ("foo", fp) == EOF) + { + puts ("fputs failed"); + return 1; + } + + if (fclose (fp) == EOF) + { + puts ("fclose failed"); + return 1; + } + + if (size != 32768 + 3) + { + printf ("expected size %d, got %zu\n", 32768 + 3, size); + return 1; + } + + for (int i = 0; i < 32768; ++i) + if (buf[i] != '\0') + { + printf ("byte at offset %d is %#hhx\n", i, buf[i]); + return 1; + } + + if (memcmp (buf + 32768, "foo", 3) != 0) + { + puts ("written string incorrect"); + return 1; + } + + /* Mark the buffer. */ + memset (buf, 'A', size); + free (buf); + + /* Try again, this time with write mode enabled before the seek. */ + fp = open_memstream (&buf, &size); + if (fp == NULL) + { + puts ("2nd open_memstream failed"); + return 1; + } + + off = ftello64 (fp); + if (off != 0) + { + puts ("2nd initial position wrong"); + return 1; + } + + if (fputs ("bar", fp) == EOF) + { + puts ("2nd fputs failed"); + return 1; + } + + if (fseek (fp, 32768, SEEK_SET) != 0) + { + puts ("2nd fseek failed"); + return 1; + } + + if (fputs ("foo", fp) == EOF) + { + puts ("3rd fputs failed"); + return 1; + } + + if (fclose (fp) == EOF) + { + puts ("2nd fclose failed"); + return 1; + } + + if (size != 32768 + 3) + { + printf ("2nd expected size %d, got %zu\n", 32768 + 3, size); + return 1; + } + + if (memcmp (buf, "bar", 3) != 0) + { + puts ("initial string incorrect in 2nd try"); + return 1; + } + + for (int i = 3; i < 32768; ++i) + if (buf[i] != '\0') + { + printf ("byte at offset %d is %#hhx in 2nd try\n", i, buf[i]); + return 1; + } + + if (memcmp (buf + 32768, "foo", 3) != 0) + { + puts ("written string incorrect in 2nd try"); + return 1; + } + + return 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |