[compiler-rt] [nfc][sanitizer] Replace mmap with InternalMmapVector in test (PR #112756)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Vitaly Buka (vitalybuka)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/112756.diff


1 Files Affected:

- (modified) compiler-rt/lib/sanitizer_common/tests/sanitizer_posix_test.cpp (+2-4) 


``````````diff
diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_posix_test.cpp b/compiler-rt/lib/sanitizer_common/tests/sanitizer_posix_test.cpp
index bed19d15a8ec77..803c8d39362e27 100644
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_posix_test.cpp
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_posix_test.cpp
@@ -65,8 +65,8 @@ TEST(SanitizerCommon, PthreadDestructorIterations) {
 
 TEST(SanitizerCommon, IsAccessibleMemoryRange) {
   const int page_size = GetPageSize();
-  uptr mem = (uptr)mmap(0, 3 * page_size, PROT_READ | PROT_WRITE,
-                        MAP_PRIVATE | MAP_ANON, -1, 0);
+  InternalMmapVector<char> buffer(3 * page_size);
+  uptr mem = reinterpret_cast<uptr>(buffer.data());
   // Protect the middle page.
   mprotect((void *)(mem + page_size), page_size, PROT_NONE);
   EXPECT_TRUE(IsAccessibleMemoryRange(mem, page_size - 1));
@@ -78,8 +78,6 @@ TEST(SanitizerCommon, IsAccessibleMemoryRange) {
   EXPECT_TRUE(IsAccessibleMemoryRange(mem + 2 * page_size, page_size));
   EXPECT_FALSE(IsAccessibleMemoryRange(mem, 3 * page_size));
   EXPECT_FALSE(IsAccessibleMemoryRange(0x0, 2));
-
-  munmap((void *)mem, 3 * page_size);
 }
 
 }  // namespace __sanitizer

``````````

</details>


https://github.com/llvm/llvm-project/pull/112756