diff options
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | malloc/Makefile | 2 | ||||
| -rw-r--r-- | malloc/tst-calloc.c | 110 |
3 files changed, 114 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog index 445f4a0849..0a24150c1a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2000-04-12 Ulrich Drepper <drepper@redhat.com> + * malloc/Makefile (tests): Add tst-calloc. + * malloc/tst-calloc.c: New file. + * sysdeps/arm/libm-test-ulps: New file. * malloc/malloc.c: Undo all of today's changes. diff --git a/malloc/Makefile b/malloc/Makefile index 53094ac560..639145c179 100644 --- a/malloc/Makefile +++ b/malloc/Makefile @@ -25,7 +25,7 @@ all: dist-headers := malloc.h headers := $(dist-headers) obstack.h mcheck.h -tests := mallocbug tst-malloc tst-valloc +tests := mallocbug tst-malloc tst-valloc tst-calloc distribute = thread-m.h mtrace.pl mcheck-init.c stackinfo.h memprof.h diff --git a/malloc/tst-calloc.c b/malloc/tst-calloc.c new file mode 100644 index 0000000000..371cfeb11a --- /dev/null +++ b/malloc/tst-calloc.c @@ -0,0 +1,110 @@ +/* Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <error.h> +#include <malloc.h> +#include <stdlib.h> +#include <stdio.h> + + +/* Number of samples per size. */ +#define N 50000 + + +static void +fixed_test (int size) +{ + char *ptrs[N]; + int i; + + for (i = 0; i < N; ++i) + { + int j; + + ptrs[i] = (char *) calloc (1, size); + + if (ptrs[i] == NULL) + break; + + for (j = 0; j < size; ++j) + { + if (ptrs[i][j] != '\0') + error (EXIT_FAILURE, 0, + "byte not cleared (size %d, element %d, byte %d)", + size, i, j); + ptrs[i][j] = '\xff'; + } + } + + while (i-- > 0) + free (ptrs[i]); +} + + +static void +random_test (void) +{ + char *ptrs[N]; + int i; + + for (i = 0; i < N; ++i) + { + int j; + int n = 1 + random () % 10; + int elem = 1 + random () % 100; + int size = n * elem; + + ptrs[i] = (char *) calloc (n, elem); + + if (ptrs[i] == NULL) + break; + + for (j = 0; j < size; ++j) + { + if (ptrs[i][j] != '\0') + error (EXIT_FAILURE, 0, + "byte not cleared (size %d, element %d, byte %d)", + size, i, j); + ptrs[i][j] = '\xff'; + } + } + + while (i-- > 0) + free (ptrs[i]); +} + + +int +main (void) +{ + /* We are allocating blocks with `calloc' and check whether every + block is completely cleared. We first try this for some fixed + times and then with random size. */ + fixed_test (15); + fixed_test (5); + fixed_test (17); + fixed_test (6); + fixed_test (31); + fixed_test (96); + + random_test (); + + return 0; +} |