[compiler-rt] asan: refactor interceptor allocation/deallocation functions (PR #145087)

[Thurston Dang via llvm-commits]

================
@@ -1117,6 +1111,99 @@ uptr asan_malloc_usable_size(const void *ptr, uptr pc, uptr bp) {
   return usable_size;
 }
 
+namespace {
+
+void *asan_new(uptr size, BufferedStackTrace *stack, bool array) {
+  return SetErrnoOnNull(
+      instance.Allocate(size, 0, stack, array ? FROM_NEW_BR : FROM_NEW, true));
+}
+
+void *asan_new_aligned(uptr size, uptr alignment, BufferedStackTrace *stack,
+                       bool array) {
+  if (UNLIKELY(alignment == 0 || !IsPowerOfTwo(alignment))) {
+    errno = errno_EINVAL;
+    if (AllocatorMayReturnNull())
+      return nullptr;
+    ReportInvalidAllocationAlignment(alignment, stack);
+  }
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thurstond wrote:

I personally like explicit braces but LLVM's coding standards do not: https://llvm.org/docs/CodingStandards.html#don-t-use-braces-on-simple-single-statement-bodies-of-if-else-loop-statements

https://github.com/llvm/llvm-project/pull/145087