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--- base/allocator/allocator_shim_default_dispatch_to_glibc.cc.orig 2021-01-07 00:36:18 UTC
+++ base/allocator/allocator_shim_default_dispatch_to_glibc.cc
@@ -6,18 +6,28 @@
#include "base/compiler_specific.h"
#include <dlfcn.h>
-#include <malloc.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <malloc_np.h>
// This translation unit defines a default dispatch for the allocator shim which
// routes allocations to libc functions.
-// The code here is strongly inspired from tcmalloc's libc_override_glibc.h.
+// The code here is strongly inspired from tcmalloc's override_glibc.h.
extern "C" {
-void* __libc_malloc(size_t size);
-void* __libc_calloc(size_t n, size_t size);
-void* __libc_realloc(void* address, size_t size);
-void* __libc_memalign(size_t alignment, size_t size);
-void __libc_free(void* ptr);
+void* __malloc(size_t size);
+void* __calloc(size_t n, size_t size);
+void* __realloc(void* address, size_t len);
+void* __memalign(size_t alignment, size_t size) {
+ void *ret;
+ if (__posix_memalign(&ret, alignment, size) != 0) {
+ return nullptr;
+ } else {
+ return ret;
+ }
+}
+int __posix_memalign(void **ptr, size_t alignment, size_t size);
+void __free(void* ptr);
} // extern "C"
namespace {
@@ -25,32 +35,32 @@ namespace {
using base::allocator::AllocatorDispatch;
void* GlibcMalloc(const AllocatorDispatch*, size_t size, void* context) {
- return __libc_malloc(size);
+ return __malloc(size);
}
void* GlibcCalloc(const AllocatorDispatch*,
size_t n,
size_t size,
void* context) {
- return __libc_calloc(n, size);
+ return __calloc(n, size);
}
void* GlibcRealloc(const AllocatorDispatch*,
void* address,
size_t size,
void* context) {
- return __libc_realloc(address, size);
+ return __realloc(address, size);
}
void* GlibcMemalign(const AllocatorDispatch*,
size_t alignment,
size_t size,
void* context) {
- return __libc_memalign(alignment, size);
+ return __memalign(alignment, size);
}
void GlibcFree(const AllocatorDispatch*, void* address, void* context) {
- __libc_free(address);
+ __free(address);
}
NO_SANITIZE("cfi-icall")
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