[compiler-rt] [scudo] Add specific die functions for linux specific failures. (PR #68650)

[Christopher Ferris via llvm-commits]

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@@ -0,0 +1,34 @@
+//===-- linux_common.h ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_LINUX_COMMON_H_
+#define SCUDO_LINUX_COMMON_H_
+
+#include "platform.h"
+
+#if SCUDO_LINUX
+
+#include "internal_defs.h"
+
+namespace scudo {
+
+// Internal map fatal error. This must not call map(). SizeIfOOM shall
+// hold the requested size on an out-of-memory error, 0 otherwise.
+void NORETURN dieOnMapError(uptr SizeIfOOM = 0);
+
+// Internal unmap fatal error. This must not call map().
+void NORETURN dieOnUnmapError(uptr Addr, uptr Size);
+
+// Internal protect fatal error. This must not call map().
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cferris1000 wrote:

I changed the comments a bit to convey what's going on a bit better.

https://github.com/llvm/llvm-project/pull/68650