/* alloc - Convenience routines for safely allocating memory
- * Copyright (C) 2007 Josh Coalson
+ * Copyright (C) 2007,2008,2009 Josh Coalson
*
- * This 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.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
*
- * This 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.
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
*
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FLAC__SHARE__ALLOC_H
*/
#include <limits.h> /* for SIZE_MAX */
-#if !defined _MSC_VER && !defined __MINGW32__ && !defined __EMX__
+#if HAVE_STDINT_H
#include <stdint.h> /* for SIZE_MAX in case limits.h didn't get it */
#endif
#include <stdlib.h> /* for size_t, malloc(), etc */
#ifndef SIZE_MAX
-#ifndef SIZE_T_MAX
-#error
-#endif
-#define SIZE_MAX SIZE_T_MAX
-#endif
-
-#ifndef FLaC__INLINE
-#define FLaC__INLINE
+# ifndef SIZE_T_MAX
+# ifdef _MSC_VER
+# define SIZE_T_MAX UINT_MAX /* What happens on 64 bit windows? */
+# else
+# error
+# endif
+# endif
+# define SIZE_MAX SIZE_T_MAX
#endif
/* avoid malloc()ing 0 bytes, see:
* https://www.securecoding.cert.org/confluence/display/seccode/MEM04-A.+Do+not+make+assumptions+about+the+result+of+allocating+0+bytes?focusedCommentId=5407003
*/
-static FLaC__INLINE void *safe_malloc_(size_t size)
+static inline void *safe_malloc_(size_t size)
{
/* malloc(0) is undefined; FLAC src convention is to always allocate */
if(!size)
return malloc(size);
}
-static FLaC__INLINE void *safe_calloc_(size_t nmemb, size_t size)
+static inline void *safe_calloc_(size_t nmemb, size_t size)
{
if(!nmemb || !size)
return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */
/*@@@@ there's probably a better way to prevent overflows when allocating untrusted sums but this works for now */
-static FLaC__INLINE void *safe_malloc_add_2op_(size_t size1, size_t size2)
+static inline void *safe_malloc_add_2op_(size_t size1, size_t size2)
{
size2 += size1;
if(size2 < size1)
return safe_malloc_(size2);
}
-static FLaC__INLINE void *safe_malloc_add_3op_(size_t size1, size_t size2, size_t size3)
+static inline void *safe_malloc_add_3op_(size_t size1, size_t size2, size_t size3)
{
size2 += size1;
if(size2 < size1)
return safe_malloc_(size3);
}
-static FLaC__INLINE void *safe_malloc_add_4op_(size_t size1, size_t size2, size_t size3, size_t size4)
+static inline void *safe_malloc_add_4op_(size_t size1, size_t size2, size_t size3, size_t size4)
{
size2 += size1;
if(size2 < size1)
return safe_malloc_(size4);
}
-static FLaC__INLINE void *safe_malloc_mul_2op_(size_t size1, size_t size2)
-#if 0
-needs support for cases where sizeof(size_t) != 4
-{
- /* could be faster #ifdef'ing off SIZEOF_SIZE_T */
- if(sizeof(size_t) == 4) {
- if ((double)size1 * (double)size2 < 4294967296.0)
- return malloc(size1*size2);
- }
- return 0;
-}
-#else
-/* better? */
-{
- if(!size1 || !size2)
- return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */
- if(size1 > SIZE_MAX / size2)
- return 0;
- return malloc(size1*size2);
-}
-#endif
+void *safe_malloc_mul_2op_(size_t size1, size_t size2) ;
-static FLaC__INLINE void *safe_malloc_mul_3op_(size_t size1, size_t size2, size_t size3)
+static inline void *safe_malloc_mul_3op_(size_t size1, size_t size2, size_t size3)
{
if(!size1 || !size2 || !size3)
return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */
}
/* size1*size2 + size3 */
-static FLaC__INLINE void *safe_malloc_mul2add_(size_t size1, size_t size2, size_t size3)
+static inline void *safe_malloc_mul2add_(size_t size1, size_t size2, size_t size3)
{
if(!size1 || !size2)
return safe_malloc_(size3);
}
/* size1 * (size2 + size3) */
-static FLaC__INLINE void *safe_malloc_muladd2_(size_t size1, size_t size2, size_t size3)
+static inline void *safe_malloc_muladd2_(size_t size1, size_t size2, size_t size3)
{
if(!size1 || (!size2 && !size3))
return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */
size2 += size3;
if(size2 < size3)
return 0;
- return safe_malloc_mul_2op_(size1, size2);
+ if(size1 > SIZE_MAX / size2)
+ return 0;
+ return malloc(size1*size2);
}
-static FLaC__INLINE void *safe_realloc_add_2op_(void *ptr, size_t size1, size_t size2)
+static inline void *safe_realloc_add_2op_(void *ptr, size_t size1, size_t size2)
{
size2 += size1;
if(size2 < size1)
return realloc(ptr, size2);
}
-static FLaC__INLINE void *safe_realloc_add_3op_(void *ptr, size_t size1, size_t size2, size_t size3)
+static inline void *safe_realloc_add_3op_(void *ptr, size_t size1, size_t size2, size_t size3)
{
size2 += size1;
if(size2 < size1)
return realloc(ptr, size3);
}
-static FLaC__INLINE void *safe_realloc_add_4op_(void *ptr, size_t size1, size_t size2, size_t size3, size_t size4)
+static inline void *safe_realloc_add_4op_(void *ptr, size_t size1, size_t size2, size_t size3, size_t size4)
{
size2 += size1;
if(size2 < size1)
return realloc(ptr, size4);
}
-static FLaC__INLINE void *safe_realloc_mul_2op_(void *ptr, size_t size1, size_t size2)
+static inline void *safe_realloc_mul_2op_(void *ptr, size_t size1, size_t size2)
{
if(!size1 || !size2)
return realloc(ptr, 0); /* preserve POSIX realloc(ptr, 0) semantics */
}
/* size1 * (size2 + size3) */
-static FLaC__INLINE void *safe_realloc_muladd2_(void *ptr, size_t size1, size_t size2, size_t size3)
+static inline void *safe_realloc_muladd2_(void *ptr, size_t size1, size_t size2, size_t size3)
{
if(!size1 || (!size2 && !size3))
return realloc(ptr, 0); /* preserve POSIX realloc(ptr, 0) semantics */
projects / platform / upstream / flac.git / blobdiff