85a83c2ced
This patch makes it an error to have a mismatch between the enabled sanitizers in a CU, and in any module being imported into the CU. Only mismatches between non-modular sanitizers are treated as errors. This patch also includes non-modular sanitizers in module hashes, in order to ensure module rebuilds occur when -fsanitize=X is toggled on and off for non-modular sanitizers, and to cut down on module rebuilds when the option is toggled for modular sanitizers. This fixes a longstanding issue with implicit modules and sanitizers, which Duncan originally diagnosed. When building with implicit modules it's possible to hit a scenario where modules are built without -fsanitize=address, and are subsequently imported into CUs with -fsanitize=address enabled. This causes strange failures at runtime. The case Duncan found affects libcxx, since its vector implementation behaves differently when ASan is enabled. Implicit module builds should "just work" when -fsanitize=X is toggled on and off across multiple compiler invocations, which is what this patch does. Differential Revision: https://reviews.llvm.org/D32724 llvm-svn: 304463
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
//===--- LangOptions.cpp - C Language Family Language Options ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the LangOptions class.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/LangOptions.h"
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#include "llvm/ADT/StringRef.h"
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using namespace clang;
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LangOptions::LangOptions()
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: IsHeaderFile(false) {
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#define LANGOPT(Name, Bits, Default, Description) Name = Default;
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#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) set##Name(Default);
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#include "clang/Basic/LangOptions.def"
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}
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void LangOptions::resetNonModularOptions() {
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#define LANGOPT(Name, Bits, Default, Description)
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#define BENIGN_LANGOPT(Name, Bits, Default, Description) Name = Default;
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#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
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Name = Default;
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#include "clang/Basic/LangOptions.def"
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// These options do not affect AST generation.
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SanitizerBlacklistFiles.clear();
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XRayAlwaysInstrumentFiles.clear();
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XRayNeverInstrumentFiles.clear();
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CurrentModule.clear();
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IsHeaderFile = false;
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}
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bool LangOptions::isNoBuiltinFunc(StringRef FuncName) const {
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for (unsigned i = 0, e = NoBuiltinFuncs.size(); i != e; ++i)
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if (FuncName.equals(NoBuiltinFuncs[i]))
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return true;
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return false;
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}
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