diff options
Diffstat (limited to 'REORG.TODO/stdio-common/tst-unlockedio.c')
| -rw-r--r-- | REORG.TODO/stdio-common/tst-unlockedio.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/tst-unlockedio.c b/REORG.TODO/stdio-common/tst-unlockedio.c new file mode 100644 index 0000000000..35652ce772 --- /dev/null +++ b/REORG.TODO/stdio-common/tst-unlockedio.c @@ -0,0 +1,169 @@ +/* Test for some *_unlocked stdio interfaces. + Copyright (C) 2004-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <libc-diag.h> + +int fd; +static void do_prepare (void); +static int do_test (void); +#define PREPARE(argc, argv) do_prepare () +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" + +static int +do_test (void) +{ + const char blah[] = "BLAH"; + char buf[strlen (blah) + 1]; + FILE *fp, *f; + const char *cp; + char *wp; + + if ((fp = fdopen (fd, "w+")) == NULL) + exit (1); + + flockfile (fp); + + f = fp; + cp = blah; + /* These tests deliberately use fwrite_unlocked with the size + argument specified as 0, which results in "division by zero" + warnings from the expansion of that macro (in code that is not + evaluated for a size of 0). This applies to the tests of + fread_unlocked below as well. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdiv-by-zero"); + if (ftello (fp) != 0 + || fwrite_unlocked (blah, blah - blah, strlen (blah), f++) != 0 + || f != fp + 1 + || fwrite_unlocked ("", 5.0, 0, --f) != 0 + || f != fp + || fwrite_unlocked (cp++, 16, 0.25, fp) != 0 + || cp != blah + 1 + || fwrite_unlocked (--cp, 0.25, 16, fp) != 0 + || cp != blah + || fwrite_unlocked (blah, 0, -0.0, fp) != 0 + || ftello (fp) != 0) + { + puts ("One of fwrite_unlocked tests failed"); + exit (1); + } + DIAG_POP_NEEDS_COMMENT; + + if (fwrite_unlocked (blah, 1, strlen (blah) - 2, fp) != strlen (blah) - 2) + { + puts ("Could not write string into file"); + exit (1); + } + + if (putc_unlocked ('A' + 0x1000000, fp) != 'A') + { + puts ("putc_unlocked failed"); + exit (1); + } + + f = fp; + cp = blah + strlen (blah) - 1; + if (putc_unlocked (*cp++, f++) != 'H' + || f != fp + 1 + || cp != strchr (blah, '\0')) + { + puts ("fputc_unlocked failed"); + exit (1); + } + + if (ftello (fp) != (off_t) strlen (blah)) + { + printf ("Failed to write %zd bytes to temporary file", strlen (blah)); + exit (1); + } + + rewind (fp); + + f = fp; + wp = buf; + memset (buf, ' ', sizeof (buf)); + /* See explanation above. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdiv-by-zero"); + if (ftello (fp) != 0 + || fread_unlocked (buf, buf - buf, strlen (blah), f++) != 0 + || f != fp + 1 + || fread_unlocked (buf, 5.0, 0, --f) != 0 + || f != fp + || fread_unlocked (wp++, 16, 0.25, fp) != 0 + || wp != buf + 1 + || fread_unlocked (--wp, 0.25, 16, fp) != 0 + || wp != buf + || fread_unlocked (buf, 0, -0.0, fp) != 0 + || ftello (fp) != 0 + || memcmp (buf, " ", sizeof (buf)) != 0) + { + puts ("One of fread_unlocked tests failed"); + exit (1); + } + DIAG_POP_NEEDS_COMMENT; + + if (fread_unlocked (buf, 1, strlen (blah) - 2, fp) != strlen (blah) - 2) + { + puts ("Could not read string from file"); + exit (1); + } + + if (getc_unlocked (fp) != 'A') + { + puts ("getc_unlocked failed"); + exit (1); + } + + f = fp; + if (fgetc_unlocked (f++) != 'H' + || f != fp + 1 + || fgetc_unlocked (--f) != EOF + || f != fp) + { + puts ("fgetc_unlocked failed"); + exit (1); + } + + if (ftello (fp) != (off_t) strlen (blah)) + { + printf ("Failed to read %zd bytes from temporary file", strlen (blah)); + exit (1); + } + + funlockfile (fp); + fclose (fp); + + return 0; +} + +static void +do_prepare (void) +{ + fd = create_temp_file ("tst-unlockedio.", NULL); + if (fd == -1) + { + printf ("cannot create temporary file: %m\n"); + exit (1); + } +} |