diff options
Diffstat (limited to 'malloc/tst-pvalloc.c')
| -rw-r--r-- | malloc/tst-pvalloc.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/malloc/tst-pvalloc.c b/malloc/tst-pvalloc.c index 1126672bd4..1c81294926 100644 --- a/malloc/tst-pvalloc.c +++ b/malloc/tst-pvalloc.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2013 Free Software Foundation, Inc. +/* Test for pvalloc. + Copyright (C) 2013 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -34,12 +35,14 @@ static int do_test (void) { void *p; - unsigned long pagesize = getpagesize(); + unsigned long pagesize = getpagesize (); unsigned long ptrval; int save; errno = 0; + /* An attempt to allocate a huge value should return NULL and set + errno to ENOMEM. */ p = pvalloc (-1); save = errno; @@ -50,8 +53,11 @@ do_test (void) if (p == NULL && save != ENOMEM) merror ("pvalloc (-1) errno is not set correctly"); + free (p); + errno = 0; + /* Test to expose integer overflow in malloc internals from BZ #15855. */ p = pvalloc (-pagesize); save = errno; @@ -62,6 +68,10 @@ do_test (void) if (p == NULL && save != ENOMEM) merror ("pvalloc (-pagesize) errno is not set correctly"); + free (p); + + /* A zero-sized allocation should succeed with glibc, returning a + non-NULL value. */ p = pvalloc (0); if (p == NULL) @@ -69,15 +79,13 @@ do_test (void) free (p); + /* Check the alignment of the returned pointer is correct. */ p = pvalloc (32); if (p == NULL) merror ("pvalloc (32) failed."); - ptrval = (unsigned long)p; - - if (p == NULL) - merror ("pvalloc (32) failed."); + ptrval = (unsigned long) p; if ((ptrval & (pagesize - 1)) != 0) merror ("returned pointer is not page aligned."); |