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-rw-r--r--libFLAC/memory.c69
1 files changed, 33 insertions, 36 deletions
diff --git a/libFLAC/memory.c b/libFLAC/memory.c
index 4d10097..d22df70 100644
--- a/libFLAC/memory.c
+++ b/libFLAC/memory.c
@@ -1,5 +1,6 @@
/* libFLAC - Free Lossless Audio Codec library
- * Copyright (C) 2001,2002,2003,2004,2005,2006,2007 Josh Coalson
+ * Copyright (C) 2001-2009 Josh Coalson
+ * Copyright (C) 2011-2014 Xiph.Org Foundation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -29,10 +30,14 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#if HAVE_CONFIG_H
+#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
#include "private/memory.h"
#include "FLAC/assert.h"
#include "share/alloc.h"
@@ -45,25 +50,8 @@ void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
#ifdef FLAC__ALIGN_MALLOC_DATA
/* align on 32-byte (256-bit) boundary */
- x = safe_malloc_add_2op_(bytes, /*+*/31);
-#ifdef SIZEOF_VOIDP
-#if SIZEOF_VOIDP == 4
- /* could do *aligned_address = x + ((unsigned) (32 - (((unsigned)x) & 31))) & 31; */
- *aligned_address = (void*)(((unsigned)x + 31) & -32);
-#elif SIZEOF_VOIDP == 8
- *aligned_address = (void*)(((FLAC__uint64)x + 31) & (FLAC__uint64)(-((FLAC__int64)32)));
-#else
-# error Unsupported sizeof(void*)
-#endif
-#else
- /* there's got to be a better way to do this right for all archs */
- if(sizeof(void*) == sizeof(unsigned))
- *aligned_address = (void*)(((unsigned)x + 31) & -32);
- else if(sizeof(void*) == sizeof(FLAC__uint64))
- *aligned_address = (void*)(((FLAC__uint64)x + 31) & (FLAC__uint64)(-((FLAC__int64)32)));
- else
- return 0;
-#endif
+ x = safe_malloc_add_2op_(bytes, /*+*/31L);
+ *aligned_address = (void*)(((uintptr_t)x + 31L) & -32L);
#else
x = safe_malloc_(bytes);
*aligned_address = x;
@@ -71,7 +59,7 @@ void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address)
return x;
}
-FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_int32_array(size_t elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer)
{
FLAC__int32 *pu; /* unaligned pointer */
union { /* union needed to comply with C99 pointer aliasing rules */
@@ -84,10 +72,10 @@ FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, FLAC__int32
FLAC__ASSERT(0 != aligned_pointer);
FLAC__ASSERT(unaligned_pointer != aligned_pointer);
- if((size_t)elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
return false;
- pu = (FLAC__int32*)FLAC__memory_alloc_aligned(sizeof(*pu) * (size_t)elements, &u.pv);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
@@ -100,7 +88,7 @@ FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned elements, FLAC__int32
}
}
-FLAC__bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_uint32_array(size_t elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **aligned_pointer)
{
FLAC__uint32 *pu; /* unaligned pointer */
union { /* union needed to comply with C99 pointer aliasing rules */
@@ -113,10 +101,10 @@ FLAC__bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, FLAC__uint
FLAC__ASSERT(0 != aligned_pointer);
FLAC__ASSERT(unaligned_pointer != aligned_pointer);
- if((size_t)elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
return false;
- pu = (FLAC__uint32*)FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
@@ -129,7 +117,7 @@ FLAC__bool FLAC__memory_alloc_aligned_uint32_array(unsigned elements, FLAC__uint
}
}
-FLAC__bool FLAC__memory_alloc_aligned_uint64_array(unsigned elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_uint64_array(size_t elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer)
{
FLAC__uint64 *pu; /* unaligned pointer */
union { /* union needed to comply with C99 pointer aliasing rules */
@@ -142,10 +130,10 @@ FLAC__bool FLAC__memory_alloc_aligned_uint64_array(unsigned elements, FLAC__uint
FLAC__ASSERT(0 != aligned_pointer);
FLAC__ASSERT(unaligned_pointer != aligned_pointer);
- if((size_t)elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
return false;
- pu = (FLAC__uint64*)FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
@@ -158,7 +146,7 @@ FLAC__bool FLAC__memory_alloc_aligned_uint64_array(unsigned elements, FLAC__uint
}
}
-FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(size_t elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
{
unsigned *pu; /* unaligned pointer */
union { /* union needed to comply with C99 pointer aliasing rules */
@@ -171,10 +159,10 @@ FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned
FLAC__ASSERT(0 != aligned_pointer);
FLAC__ASSERT(unaligned_pointer != aligned_pointer);
- if((size_t)elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
return false;
- pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
@@ -189,7 +177,7 @@ FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(unsigned elements, unsigned
#ifndef FLAC__INTEGER_ONLY_LIBRARY
-FLAC__bool FLAC__memory_alloc_aligned_real_array(unsigned elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer)
+FLAC__bool FLAC__memory_alloc_aligned_real_array(size_t elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer)
{
FLAC__real *pu; /* unaligned pointer */
union { /* union needed to comply with C99 pointer aliasing rules */
@@ -202,10 +190,10 @@ FLAC__bool FLAC__memory_alloc_aligned_real_array(unsigned elements, FLAC__real *
FLAC__ASSERT(0 != aligned_pointer);
FLAC__ASSERT(unaligned_pointer != aligned_pointer);
- if((size_t)elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
+ if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */
return false;
- pu = (FLAC__real*)FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
+ pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);
if(0 == pu) {
return false;
}
@@ -219,3 +207,12 @@ FLAC__bool FLAC__memory_alloc_aligned_real_array(unsigned elements, FLAC__real *
}
#endif
+
+void *safe_malloc_mul_2op_p(size_t size1, size_t size2)
+{
+ 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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 22:53:25 +0000