This revision was automatically updated to reflect the committed changes.
pgousseau marked an inline comment as done.
Closed by commit rL355190: [Driver] Allow enum SanitizerOrdinal to represent
more than 64 different… (authored by pgousseau, committed by ).
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.
Changed prior to commit:
https://reviews.llvm.org/D57914?vs=188748&id=188866#toc
Repository:
rL LLVM
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D57914/new/
https://reviews.llvm.org/D57914
Files:
cfe/trunk/include/clang/Basic/Attr.td
cfe/trunk/include/clang/Basic/Sanitizers.def
cfe/trunk/include/clang/Basic/Sanitizers.h
cfe/trunk/include/clang/Driver/ToolChain.h
cfe/trunk/lib/Basic/SanitizerSpecialCaseList.cpp
cfe/trunk/lib/Basic/Sanitizers.cpp
cfe/trunk/lib/CodeGen/CGExpr.cpp
cfe/trunk/lib/Driver/SanitizerArgs.cpp
cfe/trunk/lib/Driver/ToolChain.cpp
cfe/trunk/lib/Frontend/CompilerInvocation.cpp
cfe/trunk/lib/Sema/SemaDeclAttr.cpp
Index: cfe/trunk/lib/Sema/SemaDeclAttr.cpp
===================================================================
--- cfe/trunk/lib/Sema/SemaDeclAttr.cpp
+++ cfe/trunk/lib/Sema/SemaDeclAttr.cpp
@@ -6301,7 +6301,8 @@
if (!S.checkStringLiteralArgumentAttr(AL, I, SanitizerName, &LiteralLoc))
return;
- if (parseSanitizerValue(SanitizerName, /*AllowGroups=*/true) == 0)
+ if (parseSanitizerValue(SanitizerName, /*AllowGroups=*/true) ==
+ SanitizerMask())
S.Diag(LiteralLoc, diag::warn_unknown_sanitizer_ignored) << SanitizerName;
else if (isGlobalVar(D) && SanitizerName != "address")
S.Diag(D->getLocation(), diag::err_attribute_wrong_decl_type)
Index: cfe/trunk/lib/Basic/SanitizerSpecialCaseList.cpp
===================================================================
--- cfe/trunk/lib/Basic/SanitizerSpecialCaseList.cpp
+++ cfe/trunk/lib/Basic/SanitizerSpecialCaseList.cpp
@@ -36,7 +36,7 @@
void SanitizerSpecialCaseList::createSanitizerSections() {
for (auto &S : Sections) {
- SanitizerMask Mask = 0;
+ SanitizerMask Mask;
#define SANITIZER(NAME, ID) \
if (S.SectionMatcher->match(NAME)) \
Index: cfe/trunk/lib/Basic/Sanitizers.cpp
===================================================================
--- cfe/trunk/lib/Basic/Sanitizers.cpp
+++ cfe/trunk/lib/Basic/Sanitizers.cpp
@@ -11,6 +11,7 @@
//===----------------------------------------------------------------------===//
#include "clang/Basic/Sanitizers.h"
+#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/StringSwitch.h"
using namespace clang;
@@ -19,9 +20,9 @@
SanitizerMask ParsedKind = llvm::StringSwitch<SanitizerMask>(Value)
#define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
#define SANITIZER_GROUP(NAME, ID, ALIAS) \
- .Case(NAME, AllowGroups ? SanitizerKind::ID##Group : 0)
+ .Case(NAME, AllowGroups ? SanitizerKind::ID##Group : SanitizerMask())
#include "clang/Basic/Sanitizers.def"
- .Default(0);
+ .Default(SanitizerMask());
return ParsedKind;
}
@@ -33,3 +34,13 @@
#include "clang/Basic/Sanitizers.def"
return Kinds;
}
+
+llvm::hash_code SanitizerMask::hash_value() const {
+ return llvm::hash_combine_range(&maskLoToHigh[0], &maskLoToHigh[kNumElem]);
+}
+
+namespace clang {
+llvm::hash_code hash_value(const clang::SanitizerMask &Arg) {
+ return Arg.hash_value();
+}
+} // namespace clang
Index: cfe/trunk/lib/Frontend/CompilerInvocation.cpp
===================================================================
--- cfe/trunk/lib/Frontend/CompilerInvocation.cpp
+++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp
@@ -551,7 +551,7 @@
DiagnosticsEngine &Diags, SanitizerSet &S) {
for (const auto &Sanitizer : Sanitizers) {
SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
- if (K == 0)
+ if (K == SanitizerMask())
Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
else
S.set(K, true);
Index: cfe/trunk/lib/CodeGen/CGExpr.cpp
===================================================================
--- cfe/trunk/lib/CodeGen/CGExpr.cpp
+++ cfe/trunk/lib/CodeGen/CGExpr.cpp
@@ -2855,16 +2855,13 @@
}
static CheckRecoverableKind getRecoverableKind(SanitizerMask Kind) {
- assert(llvm::countPopulation(Kind) == 1);
- switch (Kind) {
- case SanitizerKind::Vptr:
+ assert(Kind.countPopulation() == 1);
+ if (Kind == SanitizerKind::Vptr)
return CheckRecoverableKind::AlwaysRecoverable;
- case SanitizerKind::Return:
- case SanitizerKind::Unreachable:
+ else if (Kind == SanitizerKind::Return || Kind == SanitizerKind::Unreachable)
return CheckRecoverableKind::Unrecoverable;
- default:
+ else
return CheckRecoverableKind::Recoverable;
- }
}
namespace {
Index: cfe/trunk/lib/Driver/SanitizerArgs.cpp
===================================================================
--- cfe/trunk/lib/Driver/SanitizerArgs.cpp
+++ cfe/trunk/lib/Driver/SanitizerArgs.cpp
@@ -21,33 +21,52 @@
#include <memory>
using namespace clang;
-using namespace clang::SanitizerKind;
using namespace clang::driver;
using namespace llvm::opt;
-enum : SanitizerMask {
- NeedsUbsanRt = Undefined | Integer | ImplicitConversion | Nullability | CFI,
- NeedsUbsanCxxRt = Vptr | CFI,
- NotAllowedWithTrap = Vptr,
- NotAllowedWithMinimalRuntime = Vptr,
- RequiresPIE = DataFlow | HWAddress | Scudo,
- NeedsUnwindTables = Address | HWAddress | Thread | Memory | DataFlow,
- SupportsCoverage = Address | HWAddress | KernelAddress | KernelHWAddress |
- Memory | KernelMemory | Leak | Undefined | Integer |
- ImplicitConversion | Nullability | DataFlow | Fuzzer |
- FuzzerNoLink,
- RecoverableByDefault = Undefined | Integer | ImplicitConversion | Nullability,
- Unrecoverable = Unreachable | Return,
- AlwaysRecoverable = KernelAddress | KernelHWAddress,
- LegacyFsanitizeRecoverMask = Undefined | Integer,
- NeedsLTO = CFI,
- TrappingSupported = (Undefined & ~Vptr) | UnsignedIntegerOverflow |
- ImplicitConversion | Nullability | LocalBounds | CFI,
- TrappingDefault = CFI,
- CFIClasses =
- CFIVCall | CFINVCall | CFIMFCall | CFIDerivedCast | CFIUnrelatedCast,
- CompatibleWithMinimalRuntime = TrappingSupported | Scudo | ShadowCallStack,
-};
+static const SanitizerMask NeedsUbsanRt =
+ SanitizerKind::Undefined | SanitizerKind::Integer |
+ SanitizerKind::ImplicitConversion | SanitizerKind::Nullability |
+ SanitizerKind::CFI;
+static const SanitizerMask NeedsUbsanCxxRt =
+ SanitizerKind::Vptr | SanitizerKind::CFI;
+static const SanitizerMask NotAllowedWithTrap = SanitizerKind::Vptr;
+static const SanitizerMask NotAllowedWithMinimalRuntime = SanitizerKind::Vptr;
+static const SanitizerMask RequiresPIE =
+ SanitizerKind::DataFlow | SanitizerKind::HWAddress | SanitizerKind::Scudo;
+static const SanitizerMask NeedsUnwindTables =
+ SanitizerKind::Address | SanitizerKind::HWAddress | SanitizerKind::Thread |
+ SanitizerKind::Memory | SanitizerKind::DataFlow;
+static const SanitizerMask SupportsCoverage =
+ SanitizerKind::Address | SanitizerKind::HWAddress |
+ SanitizerKind::KernelAddress | SanitizerKind::KernelHWAddress |
+ SanitizerKind::Memory | SanitizerKind::KernelMemory | SanitizerKind::Leak |
+ SanitizerKind::Undefined | SanitizerKind::Integer |
+ SanitizerKind::ImplicitConversion | SanitizerKind::Nullability |
+ SanitizerKind::DataFlow | SanitizerKind::Fuzzer |
+ SanitizerKind::FuzzerNoLink;
+static const SanitizerMask RecoverableByDefault =
+ SanitizerKind::Undefined | SanitizerKind::Integer |
+ SanitizerKind::ImplicitConversion | SanitizerKind::Nullability;
+static const SanitizerMask Unrecoverable =
+ SanitizerKind::Unreachable | SanitizerKind::Return;
+static const SanitizerMask AlwaysRecoverable =
+ SanitizerKind::KernelAddress | SanitizerKind::KernelHWAddress;
+static const SanitizerMask LegacyFsanitizeRecoverMask =
+ SanitizerKind::Undefined | SanitizerKind::Integer;
+static const SanitizerMask NeedsLTO = SanitizerKind::CFI;
+static const SanitizerMask TrappingSupported =
+ (SanitizerKind::Undefined & ~SanitizerKind::Vptr) |
+ SanitizerKind::UnsignedIntegerOverflow | SanitizerKind::ImplicitConversion |
+ SanitizerKind::Nullability | SanitizerKind::LocalBounds |
+ SanitizerKind::CFI;
+static const SanitizerMask TrappingDefault = SanitizerKind::CFI;
+static const SanitizerMask CFIClasses =
+ SanitizerKind::CFIVCall | SanitizerKind::CFINVCall |
+ SanitizerKind::CFIMFCall | SanitizerKind::CFIDerivedCast |
+ SanitizerKind::CFIUnrelatedCast;
+static const SanitizerMask CompatibleWithMinimalRuntime =
+ TrappingSupported | SanitizerKind::Scudo | SanitizerKind::ShadowCallStack;
enum CoverageFeature {
CoverageFunc = 1 << 0,
@@ -100,13 +119,15 @@
struct Blacklist {
const char *File;
SanitizerMask Mask;
- } Blacklists[] = {{"asan_blacklist.txt", Address},
- {"hwasan_blacklist.txt", HWAddress},
- {"msan_blacklist.txt", Memory},
- {"tsan_blacklist.txt", Thread},
- {"dfsan_abilist.txt", DataFlow},
- {"cfi_blacklist.txt", CFI},
- {"ubsan_blacklist.txt", Undefined | Integer | Nullability}};
+ } Blacklists[] = {{"asan_blacklist.txt", SanitizerKind::Address},
+ {"hwasan_blacklist.txt", SanitizerKind::HWAddress},
+ {"msan_blacklist.txt", SanitizerKind::Memory},
+ {"tsan_blacklist.txt", SanitizerKind::Thread},
+ {"dfsan_abilist.txt", SanitizerKind::DataFlow},
+ {"cfi_blacklist.txt", SanitizerKind::CFI},
+ {"ubsan_blacklist.txt", SanitizerKind::Undefined |
+ SanitizerKind::Integer |
+ SanitizerKind::Nullability}};
for (auto BL : Blacklists) {
if (!(Kinds & BL.Mask))
@@ -116,7 +137,7 @@
llvm::sys::path::append(Path, "share", BL.File);
if (llvm::sys::fs::exists(Path))
BlacklistFiles.push_back(Path.str());
- else if (BL.Mask == CFI)
+ else if (BL.Mask == SanitizerKind::CFI)
// If cfi_blacklist.txt cannot be found in the resource dir, driver
// should fail.
D.Diag(clang::diag::err_drv_no_such_file) << Path;
@@ -136,10 +157,10 @@
static SanitizerMask parseSanitizeTrapArgs(const Driver &D,
const llvm::opt::ArgList &Args) {
- SanitizerMask TrapRemove = 0; // During the loop below, the accumulated set of
+ SanitizerMask TrapRemove; // During the loop below, the accumulated set of
// sanitizers disabled by the current sanitizer
// argument or any argument after it.
- SanitizerMask TrappingKinds = 0;
+ SanitizerMask TrappingKinds;
SanitizerMask TrappingSupportedWithGroups = setGroupBits(TrappingSupported);
for (ArgList::const_reverse_iterator I = Args.rbegin(), E = Args.rend();
@@ -163,11 +184,12 @@
options::OPT_fsanitize_undefined_trap_on_error)) {
Arg->claim();
TrappingKinds |=
- expandSanitizerGroups(UndefinedGroup & ~TrapRemove) & ~TrapRemove;
+ expandSanitizerGroups(SanitizerKind::UndefinedGroup & ~TrapRemove) &
+ ~TrapRemove;
} else if (Arg->getOption().matches(
options::OPT_fno_sanitize_undefined_trap_on_error)) {
Arg->claim();
- TrapRemove |= expandSanitizerGroups(UndefinedGroup);
+ TrapRemove |= expandSanitizerGroups(SanitizerKind::UndefinedGroup);
}
}
@@ -189,13 +211,13 @@
}
bool SanitizerArgs::needsCfiRt() const {
- return !(Sanitizers.Mask & CFI & ~TrapSanitizers.Mask) && CfiCrossDso &&
- !ImplicitCfiRuntime;
+ return !(Sanitizers.Mask & SanitizerKind::CFI & ~TrapSanitizers.Mask) &&
+ CfiCrossDso && !ImplicitCfiRuntime;
}
bool SanitizerArgs::needsCfiDiagRt() const {
- return (Sanitizers.Mask & CFI & ~TrapSanitizers.Mask) && CfiCrossDso &&
- !ImplicitCfiRuntime;
+ return (Sanitizers.Mask & SanitizerKind::CFI & ~TrapSanitizers.Mask) &&
+ CfiCrossDso && !ImplicitCfiRuntime;
}
bool SanitizerArgs::requiresPIE() const {
@@ -203,24 +225,26 @@
}
bool SanitizerArgs::needsUnwindTables() const {
- return Sanitizers.Mask & NeedsUnwindTables;
+ return static_cast<bool>(Sanitizers.Mask & NeedsUnwindTables);
}
-bool SanitizerArgs::needsLTO() const { return Sanitizers.Mask & NeedsLTO; }
+bool SanitizerArgs::needsLTO() const {
+ return static_cast<bool>(Sanitizers.Mask & NeedsLTO);
+}
SanitizerArgs::SanitizerArgs(const ToolChain &TC,
const llvm::opt::ArgList &Args) {
- SanitizerMask AllRemove = 0; // During the loop below, the accumulated set of
+ SanitizerMask AllRemove; // During the loop below, the accumulated set of
// sanitizers disabled by the current sanitizer
// argument or any argument after it.
- SanitizerMask AllAddedKinds = 0; // Mask of all sanitizers ever enabled by
+ SanitizerMask AllAddedKinds; // Mask of all sanitizers ever enabled by
// -fsanitize= flags (directly or via group
// expansion), some of which may be disabled
// later. Used to carefully prune
// unused-argument diagnostics.
- SanitizerMask DiagnosedKinds = 0; // All Kinds we have diagnosed up to now.
+ SanitizerMask DiagnosedKinds; // All Kinds we have diagnosed up to now.
// Used to deduplicate diagnostics.
- SanitizerMask Kinds = 0;
+ SanitizerMask Kinds;
const SanitizerMask Supported = setGroupBits(TC.getSupportedSanitizers());
CfiCrossDso = Args.hasFlag(options::OPT_fsanitize_cfi_cross_dso,
@@ -295,12 +319,12 @@
// identifiers.
// Fixing both of those may require changes to the cross-DSO CFI
// interface.
- if (CfiCrossDso && (Add & CFIMFCall & ~DiagnosedKinds)) {
+ if (CfiCrossDso && (Add & SanitizerKind::CFIMFCall & ~DiagnosedKinds)) {
D.Diag(diag::err_drv_argument_not_allowed_with)
<< "-fsanitize=cfi-mfcall"
<< "-fsanitize-cfi-cross-dso";
- Add &= ~CFIMFCall;
- DiagnosedKinds |= CFIMFCall;
+ Add &= ~SanitizerKind::CFIMFCall;
+ DiagnosedKinds |= SanitizerKind::CFIMFCall;
}
if (SanitizerMask KindsToDiagnose = Add & ~Supported & ~DiagnosedKinds) {
@@ -314,7 +338,7 @@
// Test for -fno-rtti + explicit -fsanitizer=vptr before expanding groups
// so we don't error out if -fno-rtti and -fsanitize=undefined were
// passed.
- if ((Add & Vptr) && (RTTIMode == ToolChain::RM_Disabled)) {
+ if ((Add & SanitizerKind::Vptr) && (RTTIMode == ToolChain::RM_Disabled)) {
if (const llvm::opt::Arg *NoRTTIArg = TC.getRTTIArg()) {
assert(NoRTTIArg->getOption().matches(options::OPT_fno_rtti) &&
"RTTI disabled without -fno-rtti option?");
@@ -329,7 +353,7 @@
}
// Take out the Vptr sanitizer from the enabled sanitizers
- AllRemove |= Vptr;
+ AllRemove |= SanitizerKind::Vptr;
}
Add = expandSanitizerGroups(Add);
@@ -342,14 +366,14 @@
Add &= ~NotAllowedWithMinimalRuntime;
}
if (CfiCrossDso)
- Add &= ~CFIMFCall;
+ Add &= ~SanitizerKind::CFIMFCall;
Add &= Supported;
- if (Add & Fuzzer)
- Add |= FuzzerNoLink;
+ if (Add & SanitizerKind::Fuzzer)
+ Add |= SanitizerKind::FuzzerNoLink;
// Enable coverage if the fuzzing flag is set.
- if (Add & FuzzerNoLink) {
+ if (Add & SanitizerKind::FuzzerNoLink) {
CoverageFeatures |= CoverageInline8bitCounters | CoverageIndirCall |
CoverageTraceCmp | CoveragePCTable;
// Due to TLS differences, stack depth tracking is only enabled on Linux
@@ -366,23 +390,42 @@
}
std::pair<SanitizerMask, SanitizerMask> IncompatibleGroups[] = {
- std::make_pair(Address, Thread | Memory),
- std::make_pair(Thread, Memory),
- std::make_pair(Leak, Thread | Memory),
- std::make_pair(KernelAddress, Address | Leak | Thread | Memory),
- std::make_pair(HWAddress, Address | Thread | Memory | KernelAddress),
- std::make_pair(Efficiency, Address | HWAddress | Leak | Thread | Memory |
- KernelAddress),
- std::make_pair(Scudo, Address | HWAddress | Leak | Thread | Memory |
- KernelAddress | Efficiency),
- std::make_pair(SafeStack, Address | HWAddress | Leak | Thread | Memory |
- KernelAddress | Efficiency),
- std::make_pair(KernelHWAddress, Address | HWAddress | Leak | Thread |
- Memory | KernelAddress | Efficiency |
- SafeStack),
- std::make_pair(KernelMemory, Address | HWAddress | Leak | Thread |
- Memory | KernelAddress | Efficiency |
- Scudo | SafeStack)};
+ std::make_pair(SanitizerKind::Address,
+ SanitizerKind::Thread | SanitizerKind::Memory),
+ std::make_pair(SanitizerKind::Thread, SanitizerKind::Memory),
+ std::make_pair(SanitizerKind::Leak,
+ SanitizerKind::Thread | SanitizerKind::Memory),
+ std::make_pair(SanitizerKind::KernelAddress,
+ SanitizerKind::Address | SanitizerKind::Leak |
+ SanitizerKind::Thread | SanitizerKind::Memory),
+ std::make_pair(SanitizerKind::HWAddress,
+ SanitizerKind::Address | SanitizerKind::Thread |
+ SanitizerKind::Memory | SanitizerKind::KernelAddress),
+ std::make_pair(SanitizerKind::Efficiency,
+ SanitizerKind::Address | SanitizerKind::HWAddress |
+ SanitizerKind::Leak | SanitizerKind::Thread |
+ SanitizerKind::Memory | SanitizerKind::KernelAddress),
+ std::make_pair(SanitizerKind::Scudo,
+ SanitizerKind::Address | SanitizerKind::HWAddress |
+ SanitizerKind::Leak | SanitizerKind::Thread |
+ SanitizerKind::Memory | SanitizerKind::KernelAddress |
+ SanitizerKind::Efficiency),
+ std::make_pair(SanitizerKind::SafeStack,
+ SanitizerKind::Address | SanitizerKind::HWAddress |
+ SanitizerKind::Leak | SanitizerKind::Thread |
+ SanitizerKind::Memory | SanitizerKind::KernelAddress |
+ SanitizerKind::Efficiency),
+ std::make_pair(SanitizerKind::KernelHWAddress,
+ SanitizerKind::Address | SanitizerKind::HWAddress |
+ SanitizerKind::Leak | SanitizerKind::Thread |
+ SanitizerKind::Memory | SanitizerKind::KernelAddress |
+ SanitizerKind::Efficiency | SanitizerKind::SafeStack),
+ std::make_pair(SanitizerKind::KernelMemory,
+ SanitizerKind::Address | SanitizerKind::HWAddress |
+ SanitizerKind::Leak | SanitizerKind::Thread |
+ SanitizerKind::Memory | SanitizerKind::KernelAddress |
+ SanitizerKind::Efficiency | SanitizerKind::Scudo |
+ SanitizerKind::SafeStack)};
// Enable toolchain specific default sanitizers if not explicitly disabled.
SanitizerMask Default = TC.getDefaultSanitizers() & ~AllRemove;
@@ -398,8 +441,8 @@
// We disable the vptr sanitizer if it was enabled by group expansion but RTTI
// is disabled.
- if ((Kinds & Vptr) && (RTTIMode == ToolChain::RM_Disabled)) {
- Kinds &= ~Vptr;
+ if ((Kinds & SanitizerKind::Vptr) && (RTTIMode == ToolChain::RM_Disabled)) {
+ Kinds &= ~SanitizerKind::Vptr;
}
// Check that LTO is enabled if we need it.
@@ -408,12 +451,12 @@
<< lastArgumentForMask(D, Args, Kinds & NeedsLTO) << "-flto";
}
- if ((Kinds & ShadowCallStack) &&
+ if ((Kinds & SanitizerKind::ShadowCallStack) &&
TC.getTriple().getArch() == llvm::Triple::aarch64 &&
!llvm::AArch64::isX18ReservedByDefault(TC.getTriple()) &&
!Args.hasArg(options::OPT_ffixed_x18)) {
D.Diag(diag::err_drv_argument_only_allowed_with)
- << lastArgumentForMask(D, Args, Kinds & ShadowCallStack)
+ << lastArgumentForMask(D, Args, Kinds & SanitizerKind::ShadowCallStack)
<< "-ffixed-x18";
}
@@ -421,12 +464,12 @@
// c++abi-specific parts of UBSan runtime, and they are not provided by the
// toolchain. We don't have a good way to check the latter, so we just
// check if the toolchan supports vptr.
- if (~Supported & Vptr) {
+ if (~Supported & SanitizerKind::Vptr) {
SanitizerMask KindsToDiagnose = Kinds & ~TrappingKinds & NeedsUbsanCxxRt;
// The runtime library supports the Microsoft C++ ABI, but only well enough
// for CFI. FIXME: Remove this once we support vptr on Windows.
if (TC.getTriple().isOSWindows())
- KindsToDiagnose &= ~CFI;
+ KindsToDiagnose &= ~SanitizerKind::CFI;
if (KindsToDiagnose) {
SanitizerSet S;
S.Mask = KindsToDiagnose;
@@ -455,8 +498,8 @@
// Parse -f(no-)?sanitize-recover flags.
SanitizerMask RecoverableKinds = RecoverableByDefault | AlwaysRecoverable;
- SanitizerMask DiagnosedUnrecoverableKinds = 0;
- SanitizerMask DiagnosedAlwaysRecoverableKinds = 0;
+ SanitizerMask DiagnosedUnrecoverableKinds;
+ SanitizerMask DiagnosedAlwaysRecoverableKinds;
for (const auto *Arg : Args) {
const char *DeprecatedReplacement = nullptr;
if (Arg->getOption().matches(options::OPT_fsanitize_recover)) {
@@ -539,7 +582,7 @@
}
// Parse -f[no-]sanitize-memory-track-origins[=level] options.
- if (AllAddedKinds & Memory) {
+ if (AllAddedKinds & SanitizerKind::Memory) {
if (Arg *A =
Args.getLastArg(options::OPT_fsanitize_memory_track_origins_EQ,
options::OPT_fsanitize_memory_track_origins,
@@ -567,19 +610,19 @@
MsanUseAfterDtor = false;
}
- if (AllAddedKinds & Thread) {
- TsanMemoryAccess = Args.hasFlag(options::OPT_fsanitize_thread_memory_access,
- options::OPT_fno_sanitize_thread_memory_access,
- TsanMemoryAccess);
- TsanFuncEntryExit = Args.hasFlag(options::OPT_fsanitize_thread_func_entry_exit,
- options::OPT_fno_sanitize_thread_func_entry_exit,
- TsanFuncEntryExit);
- TsanAtomics = Args.hasFlag(options::OPT_fsanitize_thread_atomics,
- options::OPT_fno_sanitize_thread_atomics,
- TsanAtomics);
+ if (AllAddedKinds & SanitizerKind::Thread) {
+ TsanMemoryAccess = Args.hasFlag(
+ options::OPT_fsanitize_thread_memory_access,
+ options::OPT_fno_sanitize_thread_memory_access, TsanMemoryAccess);
+ TsanFuncEntryExit = Args.hasFlag(
+ options::OPT_fsanitize_thread_func_entry_exit,
+ options::OPT_fno_sanitize_thread_func_entry_exit, TsanFuncEntryExit);
+ TsanAtomics =
+ Args.hasFlag(options::OPT_fsanitize_thread_atomics,
+ options::OPT_fno_sanitize_thread_atomics, TsanAtomics);
}
- if (AllAddedKinds & CFI) {
+ if (AllAddedKinds & SanitizerKind::CFI) {
// Without PIE, external function address may resolve to a PLT record, which
// can not be verified by the target module.
NeedPIE |= CfiCrossDso;
@@ -603,7 +646,7 @@
<< "-fsanitize-minimal-runtime"
<< lastArgumentForMask(D, Args, IncompatibleMask);
- SanitizerMask NonTrappingCfi = Kinds & CFI & ~TrappingKinds;
+ SanitizerMask NonTrappingCfi = Kinds & SanitizerKind::CFI & ~TrappingKinds;
if (NonTrappingCfi)
D.Diag(clang::diag::err_drv_argument_only_allowed_with)
<< "fsanitize-minimal-runtime"
@@ -691,7 +734,7 @@
ImplicitCfiRuntime = TC.getTriple().isAndroid();
- if (AllAddedKinds & Address) {
+ if (AllAddedKinds & SanitizerKind::Address) {
NeedPIE |= TC.getTriple().isOSFuchsia();
if (Arg *A =
Args.getLastArg(options::OPT_fsanitize_address_field_padding)) {
@@ -713,7 +756,7 @@
case options::OPT__SLASH_LDd:
D.Diag(clang::diag::err_drv_argument_not_allowed_with)
<< WindowsDebugRTArg->getAsString(Args)
- << lastArgumentForMask(D, Args, Address);
+ << lastArgumentForMask(D, Args, SanitizerKind::Address);
D.Diag(clang::diag::note_drv_address_sanitizer_debug_runtime);
}
}
@@ -742,7 +785,7 @@
AsanUseAfterScope = false;
}
- if (AllAddedKinds & HWAddress) {
+ if (AllAddedKinds & SanitizerKind::HWAddress) {
if (Arg *HwasanAbiArg =
Args.getLastArg(options::OPT_fsanitize_hwaddress_abi_EQ)) {
HwasanAbi = HwasanAbiArg->getValue();
@@ -754,7 +797,7 @@
}
}
- if (AllAddedKinds & SafeStack) {
+ if (AllAddedKinds & SanitizerKind::SafeStack) {
// SafeStack runtime is built into the system on Fuchsia.
SafeStackRuntime = !TC.getTriple().isOSFuchsia();
}
@@ -774,7 +817,7 @@
static std::string toString(const clang::SanitizerSet &Sanitizers) {
std::string Res;
#define SANITIZER(NAME, ID) \
- if (Sanitizers.has(ID)) { \
+ if (Sanitizers.has(SanitizerKind::ID)) { \
if (!Res.empty()) \
Res += ","; \
Res += NAME; \
@@ -936,7 +979,8 @@
// https://github.com/google/sanitizers/issues/373
// We can't make this conditional on -fsanitize=leak, as that flag shouldn't
// affect compilation.
- if (Sanitizers.has(Memory) || Sanitizers.has(Address))
+ if (Sanitizers.has(SanitizerKind::Memory) ||
+ Sanitizers.has(SanitizerKind::Address))
CmdArgs.push_back("-fno-assume-sane-operator-new");
// Require -fvisibility= flag on non-Windows when compiling if vptr CFI is
@@ -959,18 +1003,18 @@
A->getOption().matches(options::OPT_fsanitize_trap_EQ) ||
A->getOption().matches(options::OPT_fno_sanitize_trap_EQ)) &&
"Invalid argument in parseArgValues!");
- SanitizerMask Kinds = 0;
+ SanitizerMask Kinds;
for (int i = 0, n = A->getNumValues(); i != n; ++i) {
const char *Value = A->getValue(i);
SanitizerMask Kind;
// Special case: don't accept -fsanitize=all.
if (A->getOption().matches(options::OPT_fsanitize_EQ) &&
0 == strcmp("all", Value))
- Kind = 0;
+ Kind = SanitizerMask();
// Similarly, don't accept -fsanitize=efficiency-all.
else if (A->getOption().matches(options::OPT_fsanitize_EQ) &&
0 == strcmp("efficiency-all", Value))
- Kind = 0;
+ Kind = SanitizerMask();
else
Kind = parseSanitizerValue(Value, /*AllowGroups=*/true);
Index: cfe/trunk/lib/Driver/ToolChain.cpp
===================================================================
--- cfe/trunk/lib/Driver/ToolChain.cpp
+++ cfe/trunk/lib/Driver/ToolChain.cpp
@@ -818,21 +818,23 @@
// Return sanitizers which don't require runtime support and are not
// platform dependent.
- using namespace SanitizerKind;
-
- SanitizerMask Res = (Undefined & ~Vptr & ~Function) | (CFI & ~CFIICall) |
- CFICastStrict | UnsignedIntegerOverflow |
- ImplicitConversion | Nullability | LocalBounds;
+ SanitizerMask Res = (SanitizerKind::Undefined & ~SanitizerKind::Vptr &
+ ~SanitizerKind::Function) |
+ (SanitizerKind::CFI & ~SanitizerKind::CFIICall) |
+ SanitizerKind::CFICastStrict |
+ SanitizerKind::UnsignedIntegerOverflow |
+ SanitizerKind::ImplicitConversion |
+ SanitizerKind::Nullability | SanitizerKind::LocalBounds;
if (getTriple().getArch() == llvm::Triple::x86 ||
getTriple().getArch() == llvm::Triple::x86_64 ||
getTriple().getArch() == llvm::Triple::arm ||
getTriple().getArch() == llvm::Triple::aarch64 ||
getTriple().getArch() == llvm::Triple::wasm32 ||
getTriple().getArch() == llvm::Triple::wasm64)
- Res |= CFIICall;
+ Res |= SanitizerKind::CFIICall;
if (getTriple().getArch() == llvm::Triple::x86_64 ||
getTriple().getArch() == llvm::Triple::aarch64)
- Res |= ShadowCallStack;
+ Res |= SanitizerKind::ShadowCallStack;
return Res;
}
Index: cfe/trunk/include/clang/Basic/Sanitizers.def
===================================================================
--- cfe/trunk/include/clang/Basic/Sanitizers.def
+++ cfe/trunk/include/clang/Basic/Sanitizers.def
@@ -177,7 +177,7 @@
// Magic group, containing all sanitizers. For example, "-fno-sanitize=all"
// can be used to disable all the sanitizers.
-SANITIZER_GROUP("all", All, ~0ULL)
+SANITIZER_GROUP("all", All, ~SanitizerMask())
#undef SANITIZER
#undef SANITIZER_GROUP
Index: cfe/trunk/include/clang/Basic/Sanitizers.h
===================================================================
--- cfe/trunk/include/clang/Basic/Sanitizers.h
+++ cfe/trunk/include/clang/Basic/Sanitizers.h
@@ -20,45 +20,166 @@
#include <cassert>
#include <cstdint>
+namespace llvm {
+class hash_code;
+}
+
namespace clang {
-using SanitizerMask = uint64_t;
+class SanitizerMask {
+ /// Number of array elements.
+ static constexpr unsigned kNumElem = 2;
+ /// Mask value initialized to 0.
+ uint64_t maskLoToHigh[kNumElem]{};
+ /// Number of bits in a mask.
+ static constexpr unsigned kNumBits = sizeof(decltype(maskLoToHigh)) * 8;
+ /// Number of bits in a mask element.
+ static constexpr unsigned kNumBitElem = sizeof(decltype(maskLoToHigh[0])) * 8;
+
+public:
+ static constexpr bool checkBitPos(const unsigned Pos) {
+ return Pos < kNumBits;
+ }
-namespace SanitizerKind {
+ /// Create a mask with a bit enabled at position Pos.
+ static SanitizerMask bitPosToMask(const unsigned Pos) {
+ assert(Pos < kNumBits && "Bit position too big.");
+ SanitizerMask mask;
+ mask.maskLoToHigh[Pos / kNumBitElem] = 1ULL << Pos % kNumBitElem;
+ return mask;
+ }
-// Assign ordinals to possible values of -fsanitize= flag, which we will use as
-// bit positions.
-enum SanitizerOrdinal : uint64_t {
-#define SANITIZER(NAME, ID) SO_##ID,
-#define SANITIZER_GROUP(NAME, ID, ALIAS) SO_##ID##Group,
-#include "clang/Basic/Sanitizers.def"
- SO_Count
+ unsigned countPopulation() const {
+ unsigned total = 0;
+ for (const auto &Val : maskLoToHigh)
+ total += llvm::countPopulation(Val);
+ return total;
+ }
+
+ void flipAllBits() {
+ for (auto &Val : maskLoToHigh)
+ Val = ~Val;
+ }
+
+ bool isPowerOf2() const {
+ return countPopulation() == 1;
+ }
+
+ llvm::hash_code hash_value() const;
+
+ explicit operator bool() const {
+ for (const auto &Val : maskLoToHigh)
+ if (Val)
+ return true;
+ return false;
+ };
+
+ bool operator==(const SanitizerMask &V) const {
+ for (unsigned k = 0; k < kNumElem; k++) {
+ if (maskLoToHigh[k] != V.maskLoToHigh[k])
+ return false;
+ }
+ return true;
+ }
+
+ SanitizerMask &operator&=(const SanitizerMask &RHS) {
+ for (unsigned k = 0; k < kNumElem; k++)
+ maskLoToHigh[k] &= RHS.maskLoToHigh[k];
+ return *this;
+ }
+
+ SanitizerMask &operator|=(const SanitizerMask &RHS) {
+ for (unsigned k = 0; k < kNumElem; k++)
+ maskLoToHigh[k] |= RHS.maskLoToHigh[k];
+ return *this;
+ }
+
+ bool operator!() const {
+ for (const auto &Val : maskLoToHigh)
+ if (Val)
+ return false;
+ return true;
+ }
+
+ bool operator!=(const SanitizerMask &RHS) const { return !((*this) == RHS); }
};
+// Declaring in clang namespace so that it can be found by ADL.
+llvm::hash_code hash_value(const clang::SanitizerMask &Arg);
+
+inline SanitizerMask operator~(SanitizerMask v) {
+ v.flipAllBits();
+ return v;
+}
+
+inline SanitizerMask operator&(SanitizerMask a, const SanitizerMask &b) {
+ a &= b;
+ return a;
+}
+
+inline SanitizerMask operator|(SanitizerMask a, const SanitizerMask &b) {
+ a |= b;
+ return a;
+}
+
// Define the set of sanitizer kinds, as well as the set of sanitizers each
// sanitizer group expands into.
-#define SANITIZER(NAME, ID) \
- const SanitizerMask ID = 1ULL << SO_##ID;
-#define SANITIZER_GROUP(NAME, ID, ALIAS) \
- const SanitizerMask ID = ALIAS; \
- const SanitizerMask ID##Group = 1ULL << SO_##ID##Group;
+// Uses static data member of a class template as recommended in second
+// workaround from n4424 to avoid odr issues.
+// FIXME: Can be marked as constexpr once c++14 can be used in llvm.
+// FIXME: n4424 workaround can be replaced by c++17 inline variable.
+template <typename T = void> struct SanitizerMasks {
+
+ // Assign ordinals to possible values of -fsanitize= flag, which we will use
+ // as bit positions.
+ enum SanitizerOrdinal : uint64_t {
+#define SANITIZER(NAME, ID) SO_##ID,
+#define SANITIZER_GROUP(NAME, ID, ALIAS) SO_##ID##Group,
#include "clang/Basic/Sanitizers.def"
+ SO_Count
+ };
+
+#define SANITIZER(NAME, ID) \
+ static const SanitizerMask ID; \
+ static_assert(SanitizerMask::checkBitPos(SO_##ID), "Bit position too big.");
+#define SANITIZER_GROUP(NAME, ID, ALIAS) \
+ static const SanitizerMask ID; \
+ static const SanitizerMask ID##Group; \
+ static_assert(SanitizerMask::checkBitPos(SO_##ID##Group), \
+ "Bit position too big.");
+#include "clang/Basic/Sanitizers.def"
+}; // SanitizerMasks
+
+#define SANITIZER(NAME, ID) \
+ template <typename T> \
+ const SanitizerMask SanitizerMasks<T>::ID = \
+ SanitizerMask::bitPosToMask(SO_##ID);
+#define SANITIZER_GROUP(NAME, ID, ALIAS) \
+ template <typename T> \
+ const SanitizerMask SanitizerMasks<T>::ID = SanitizerMask(ALIAS); \
+ template <typename T> \
+ const SanitizerMask SanitizerMasks<T>::ID##Group = \
+ SanitizerMask::bitPosToMask(SO_##ID##Group);
+#include "clang/Basic/Sanitizers.def"
+
+// Explicit instantiation here to ensure correct initialization order.
+template struct SanitizerMasks<>;
-} // namespace SanitizerKind
+using SanitizerKind = SanitizerMasks<>;
struct SanitizerSet {
/// Check if a certain (single) sanitizer is enabled.
bool has(SanitizerMask K) const {
- assert(llvm::isPowerOf2_64(K));
- return Mask & K;
+ assert(K.isPowerOf2() && "Has to be a single sanitizer.");
+ return static_cast<bool>(Mask & K);
}
/// Check if one or more sanitizers are enabled.
- bool hasOneOf(SanitizerMask K) const { return Mask & K; }
+ bool hasOneOf(SanitizerMask K) const { return static_cast<bool>(Mask & K); }
/// Enable or disable a certain (single) sanitizer.
void set(SanitizerMask K, bool Value) {
- assert(llvm::isPowerOf2_64(K));
+ assert(K.isPowerOf2() && "Has to be a single sanitizer.");
Mask = Value ? (Mask | K) : (Mask & ~K);
}
@@ -66,10 +187,10 @@
void clear(SanitizerMask K = SanitizerKind::All) { Mask &= ~K; }
/// Returns true if no sanitizers are enabled.
- bool empty() const { return Mask == 0; }
+ bool empty() const { return !Mask; }
/// Bitmask of enabled sanitizers.
- SanitizerMask Mask = 0;
+ SanitizerMask Mask;
};
/// Parse a single value from a -fsanitize= or -fno-sanitize= value list.
Index: cfe/trunk/include/clang/Basic/Attr.td
===================================================================
--- cfe/trunk/include/clang/Basic/Attr.td
+++ cfe/trunk/include/clang/Basic/Attr.td
@@ -2366,7 +2366,7 @@
let Documentation = [NoSanitizeDocs];
let AdditionalMembers = [{
SanitizerMask getMask() const {
- SanitizerMask Mask = 0;
+ SanitizerMask Mask;
for (auto SanitizerName : sanitizers()) {
SanitizerMask ParsedMask =
parseSanitizerValue(SanitizerName, /*AllowGroups=*/true);
Index: cfe/trunk/include/clang/Driver/ToolChain.h
===================================================================
--- cfe/trunk/include/clang/Driver/ToolChain.h
+++ cfe/trunk/include/clang/Driver/ToolChain.h
@@ -563,7 +563,9 @@
virtual SanitizerMask getSupportedSanitizers() const;
/// Return sanitizers which are enabled by default.
- virtual SanitizerMask getDefaultSanitizers() const { return 0; }
+ virtual SanitizerMask getDefaultSanitizers() const {
+ return SanitizerMask();
+ }
};
/// Set a ToolChain's effective triple. Reset it when the registration object
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