From 13c2d08571baab9982f01acb1d302049bdace581 Mon Sep 17 00:00:00 2001
From: Alex Shlyapnikov <alekseys@google.com>
Date: Tue, 18 Jul 2017 19:11:04 +0000
Subject: [Sanitizers] ASan/MSan/LSan allocators set errno on failure.

Summary:
ASan/MSan/LSan allocators set errno on allocation failures according to
malloc/calloc/etc. expected behavior.

MSan allocator was refactored a bit to make its structure more similar
with other allocators.

Also switch Scudo allocator to the internal errno definitions.

TSan allocator changes will follow.

Reviewers: eugenis

Subscribers: llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D35275

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@308344 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/msan/allocator_returns_null.cc | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'test/msan')

diff --git a/test/msan/allocator_returns_null.cc b/test/msan/allocator_returns_null.cc
index b3bc1a365..583b5b4f7 100644
--- a/test/msan/allocator_returns_null.cc
+++ b/test/msan/allocator_returns_null.cc
@@ -36,12 +36,13 @@
 // RUN: MSAN_OPTIONS=allocator_may_return_null=1     %run %t new-nothrow 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=CHECK-nnNULL
 
+// UNSUPPORTED: win32
 
 #include <assert.h>
 #include <errno.h>
-#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <limits>
 #include <new>
 
@@ -86,6 +87,8 @@ int main(int argc, char **argv) {
     assert(0);
   }
 
+  fprintf(stderr, "errno: %d\n", errno);
+
   // The NULL pointer is printed differently on different systems, while (long)0
   // is always the same.
   fprintf(stderr, "x: %lx\n", (long)x);
@@ -110,14 +113,19 @@ int main(int argc, char **argv) {
 // CHECK-nnCRASH: MemorySanitizer's allocator is terminating the process
 
 // CHECK-mNULL: malloc:
+// CHECK-mNULL: errno: 12
 // CHECK-mNULL: x: 0
 // CHECK-cNULL: calloc:
+// CHECK-cNULL: errno: 12
 // CHECK-cNULL: x: 0
 // CHECK-coNULL: calloc-overflow:
+// CHECK-coNULL: errno: 12
 // CHECK-coNULL: x: 0
 // CHECK-rNULL: realloc:
+// CHECK-rNULL: errno: 12
 // CHECK-rNULL: x: 0
 // CHECK-mrNULL: realloc-after-malloc:
+// CHECK-mrNULL: errno: 12
 // CHECK-mrNULL: x: 0
 // CHECK-nnNULL: new-nothrow:
 // CHECK-nnNULL: x: 0
-- 
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