llvm-project/compiler-rt/lib/ubsan/ubsan_win_runtime_thunk.cpp
Charlie Barto 53a81d4d26
Reland [asan][windows] Eliminate the static asan runtime on windows (#107899)
This reapplies 8fa66c6ca7272268747835a0e86805307b62399c ([asan][windows]
Eliminate the static asan runtime on windows) for a second time.

That PR bounced off the tests because it caused failures in the other
sanitizer runtimes, these have been fixed by only building interception,
sanitizer_common, and asan with /MD, and continuing to build the rest of
the runtimes with /MT. This does mean that any usage of the static
ubsan/fuzzer/etc runtimes will mean you're mixing different runtime
library linkages in the same app, the interception, sanitizer_common,
and asan runtimes are designed for this, however it does result in some
linker warnings.

Additionally, it turns out when building in release-mode with
LLVM_ENABLE_PDBs the build system forced /OPT:ICF. This totally breaks
asan's "new" method of doing "weak" functions on windows, and so
/OPT:NOICF was explicitly added to asan's link flags.

---------

Co-authored-by: Amy Wishnousky <amyw@microsoft.com>
2024-09-09 13:41:08 -07:00

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//===-- ubsan_win_runtime_thunk.cpp ----------------------------- --===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines things that need to be present in the application modules
// to interact with Ubsan, when it is included in a dll.
//
//===----------------------------------------------------------------------===//
#if defined(SANITIZER_DYNAMIC_RUNTIME_THUNK) || \
defined(SANITIZER_STATIC_RUNTIME_THUNK)
#define SANITIZER_IMPORT_INTERFACE 1
#include "sanitizer_common/sanitizer_win_defs.h"
#include "sanitizer_common/sanitizer_win_thunk_interception.h"
// Define weak alias for all weak functions imported from ubsan.
#define INTERFACE_FUNCTION(Name)
#define INTERFACE_WEAK_FUNCTION(Name) REGISTER_WEAK_FUNCTION(Name)
#include "ubsan_interface.inc"
#endif // defined(SANITIZER_DYNAMIC_RUNTIME_THUNK) ||
// defined(SANITIZER_STATIC_RUNTIME_THUNK)