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Fix allocated size not a multiple of alignment

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This commit is contained in:
Carles Fernandez 2021-10-01 22:43:11 +02:00
parent e96fbb348e
commit bbf50076a0
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GPG Key ID: 4C583C52B0C3877D
1 changed files with 16 additions and 3 deletions
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19
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/volk_gnsssdr_malloc.c
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@ -7,7 +7,7 @@
*
*/
#include "volk_gnsssdr/volk_gnsssdr_malloc.h"
#include <volk_gnsssdr/volk_gnsssdr_malloc.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -34,6 +34,19 @@
void *volk_gnsssdr_malloc(size_t size, size_t alignment)
{
if ((size == 0) || (alignment == 0))
{
fprintf(stderr, "VOLK_GNSSSDR: Error allocating memory: either size or alignment is 0");
return NULL;
}
// Tweak size to satisfy ASAN (the GCC address sanitizer).
// Calling 'volk_gnsssdr_malloc' might therefor result in the allocation of more memory than
// requested for correct alignment. Any allocation size change here will in general not
// impact the end result since initial size alignment is required either way.
if (size % alignment)
{
size += alignment - (size % alignment);
}
#if HAVE_POSIX_MEMALIGN
// quoting posix_memalign() man page:
// "alignment must be a power of two and a multiple of sizeof(void *)"
@ -52,7 +65,7 @@ void *volk_gnsssdr_malloc(size_t size, size_t alignment)
"(posix_memalign: error %d: %s)\n",
err, strerror(err));
}
#elif defined(_MSC_VER)
#elif defined(_MSC_VER) || defined(__MINGW32__)
void *ptr = _aligned_malloc(size, alignment);
#else
void *ptr = aligned_alloc(alignment, size);
@ -66,7 +79,7 @@ void *volk_gnsssdr_malloc(size_t size, size_t alignment)
void volk_gnsssdr_free(void *ptr)
{
#if defined(_MSC_VER)
#if defined(_MSC_VER) || defined(__MINGW32__)
_aligned_free(ptr);
#else
free(ptr);