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[libFuzzer] remove dfsan support and some related stale code. This is not being used and as is is pretty weak anyway

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llvm-svn: 283187
This commit is contained in:
Kostya Serebryany 2016-10-04 06:08:46 +00:00
parent 843c373b12
commit 783f41e2c2
9 changed files with 1 additions and 449 deletions
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61
lib/Fuzzer/FuzzerDFSan.h
View File

@ -1,61 +0,0 @@
//===- FuzzerDFSan.h - Internal header for the Fuzzer -----------*- C++ -* ===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// DFSan interface.
//===----------------------------------------------------------------------===//
#ifndef LLVM_FUZZER_DFSAN_H
#define LLVM_FUZZER_DFSAN_H
#define LLVM_FUZZER_SUPPORTS_DFSAN 0
#if defined(__has_include)
# if __has_include(<sanitizer/dfsan_interface.h>)
# if defined (__linux__)
# undef LLVM_FUZZER_SUPPORTS_DFSAN
# define LLVM_FUZZER_SUPPORTS_DFSAN 1
# include <sanitizer/dfsan_interface.h>
# endif // __linux__
# endif
#endif // defined(__has_include)
#if LLVM_FUZZER_SUPPORTS_DFSAN
extern "C" {
__attribute__((weak))
dfsan_label dfsan_create_label(const char *desc, void *userdata);
__attribute__((weak))
void dfsan_set_label(dfsan_label label, void *addr, size_t size);
__attribute__((weak))
void dfsan_add_label(dfsan_label label, void *addr, size_t size);
__attribute__((weak))
const struct dfsan_label_info *dfsan_get_label_info(dfsan_label label);
__attribute__((weak))
dfsan_label dfsan_read_label(const void *addr, size_t size);
} // extern "C"
namespace fuzzer {
static bool ReallyHaveDFSan() {
return &dfsan_create_label != nullptr;
}
} // namespace fuzzer
#else
// When compiling with a compiler which does not support dfsan,
// this code is still expected to build (but not necessary work).
typedef unsigned short dfsan_label;
struct dfsan_label_info {
dfsan_label l1, l2;
const char *desc;
void *userdata;
};
namespace fuzzer {
static bool ReallyHaveDFSan() { return false; }
} // namespace fuzzer
#endif
#endif // LLVM_FUZZER_DFSAN_H

1
lib/Fuzzer/FuzzerInternal.h
View File

@ -62,7 +62,6 @@ public:
void Loop();
void ShuffleAndMinimize(UnitVector *V);
void InitializeTraceState();
void AssignTaintLabels(uint8_t *Data, size_t Size);
void RereadOutputCorpus(size_t MaxSize);
size_t secondsSinceProcessStartUp() {

1
lib/Fuzzer/FuzzerLoop.cpp
View File

@ -470,7 +470,6 @@ void Fuzzer::ExecuteCallback(const uint8_t *Data, size_t Size) {
memcpy(DataCopy, Data, Size);
if (CurrentUnitData && CurrentUnitData != Data)
memcpy(CurrentUnitData, Data, Size);
AssignTaintLabels(DataCopy, Size);
CurrentUnitSize = Size;
AllocTracer.Start();
UnitStartTime = system_clock::now();

335
lib/Fuzzer/FuzzerTraceState.cpp
View File

@ -6,71 +6,9 @@
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// This file implements a mutation algorithm based on instruction traces and
// on taint analysis feedback from DFSan.
//
// Instruction traces are special hooks inserted by the compiler around
// interesting instructions. Currently supported traces:
// * __sanitizer_cov_trace_cmp -- inserted before every ICMP instruction,
// receives the type, size and arguments of ICMP.
//
// Every time a traced event is intercepted we analyse the data involved
// in the event and suggest a mutation for future executions.
// For example if 4 bytes of data that derive from input bytes {4,5,6,7}
// are compared with a constant 12345,
// we try to insert 12345, 12344, 12346 into bytes
// {4,5,6,7} of the next fuzzed inputs.
//
// The fuzzer can work only with the traces, or with both traces and DFSan.
//
// DataFlowSanitizer (DFSan) is a tool for
// generalised dynamic data flow (taint) analysis:
// http://clang.llvm.org/docs/DataFlowSanitizer.html .
//
// The approach with DFSan-based fuzzing has some similarity to
// "Taint-based Directed Whitebox Fuzzing"
// by Vijay Ganesh & Tim Leek & Martin Rinard:
// http://dspace.mit.edu/openaccess-disseminate/1721.1/59320,
// but it uses a full blown LLVM IR taint analysis and separate instrumentation
// to analyze all of the "attack points" at once.
//
// Workflow with DFSan:
// * lib/Fuzzer/Fuzzer*.cpp is compiled w/o any instrumentation.
// * The code under test is compiled with DFSan *and* with instruction traces.
// * Every call to HOOK(a,b) is replaced by DFSan with
// __dfsw_HOOK(a, b, label(a), label(b)) so that __dfsw_HOOK
// gets all the taint labels for the arguments.
// * At the Fuzzer startup we assign a unique DFSan label
// to every byte of the input string (Fuzzer::CurrentUnitData) so that
// for any chunk of data we know which input bytes it has derived from.
// * The __dfsw_* functions (implemented in this file) record the
// parameters (i.e. the application data and the corresponding taint labels)
// in a global state.
//
// Parts of this code will not function when DFSan is not linked in.
// Instead of using ifdefs and thus requiring a separate build of lib/Fuzzer
// we redeclare the dfsan_* interface functions as weak and check if they
// are nullptr before calling.
// If this approach proves to be useful we may add attribute(weak) to the
// dfsan declarations in dfsan_interface.h
//
// This module is in the "proof of concept" stage.
// It is capable of solving only the simplest puzzles
// like test/dfsan/DFSanSimpleCmpTest.cpp.
// Data tracing.
//===----------------------------------------------------------------------===//
/* Example of manual usage (-fsanitize=dataflow is optional):
(
cd $LLVM/lib/Fuzzer/
clang -fPIC -c -g -O2 -std=c++11 Fuzzer*.cpp
clang++ -O0 -std=c++11 -fsanitize-coverage=edge,trace-cmp \
-fsanitize=dataflow \
test/SimpleCmpTest.cpp Fuzzer*.o
./a.out -use_traces=1
)
*/
#include "FuzzerDFSan.h"
#include "FuzzerInternal.h"
#include "FuzzerDictionary.h"
#include "FuzzerMutate.h"
@ -83,90 +21,8 @@
#include <map>
#include <set>
#if !LLVM_FUZZER_SUPPORTS_DFSAN
// Stubs for dfsan for platforms where dfsan does not exist and weak
// functions don't work.
extern "C" {
dfsan_label dfsan_create_label(const char *desc, void *userdata) { return 0; }
void dfsan_set_label(dfsan_label label, void *addr, size_t size) {}
void dfsan_add_label(dfsan_label label, void *addr, size_t size) {}
const struct dfsan_label_info *dfsan_get_label_info(dfsan_label label) {
return nullptr;
}
dfsan_label dfsan_read_label(const void *addr, size_t size) { return 0; }
} // extern "C"
#endif // !LLVM_FUZZER_SUPPORTS_DFSAN
namespace fuzzer {
// These values are copied from include/llvm/IR/InstrTypes.h.
// We do not include the LLVM headers here to remain independent.
// If these values ever change, an assertion in ComputeCmp will fail.
enum Predicate {
ICMP_EQ = 32, ///< equal
ICMP_NE = 33, ///< not equal
ICMP_UGT = 34, ///< unsigned greater than
ICMP_UGE = 35, ///< unsigned greater or equal
ICMP_ULT = 36, ///< unsigned less than
ICMP_ULE = 37, ///< unsigned less or equal
ICMP_SGT = 38, ///< signed greater than
ICMP_SGE = 39, ///< signed greater or equal
ICMP_SLT = 40, ///< signed less than
ICMP_SLE = 41, ///< signed less or equal
};
template <class U, class S>
bool ComputeCmp(size_t CmpType, U Arg1, U Arg2) {
switch(CmpType) {
case ICMP_EQ : return Arg1 == Arg2;
case ICMP_NE : return Arg1 != Arg2;
case ICMP_UGT: return Arg1 > Arg2;
case ICMP_UGE: return Arg1 >= Arg2;
case ICMP_ULT: return Arg1 < Arg2;
case ICMP_ULE: return Arg1 <= Arg2;
case ICMP_SGT: return (S)Arg1 > (S)Arg2;
case ICMP_SGE: return (S)Arg1 >= (S)Arg2;
case ICMP_SLT: return (S)Arg1 < (S)Arg2;
case ICMP_SLE: return (S)Arg1 <= (S)Arg2;
default: assert(0 && "unsupported CmpType");
}
return false;
}
static bool ComputeCmp(size_t CmpSize, size_t CmpType, uint64_t Arg1,
uint64_t Arg2) {
if (CmpSize == 8) return ComputeCmp<uint64_t, int64_t>(CmpType, Arg1, Arg2);
if (CmpSize == 4) return ComputeCmp<uint32_t, int32_t>(CmpType, Arg1, Arg2);
if (CmpSize == 2) return ComputeCmp<uint16_t, int16_t>(CmpType, Arg1, Arg2);
if (CmpSize == 1) return ComputeCmp<uint8_t, int8_t>(CmpType, Arg1, Arg2);
// Other size, ==
if (CmpType == ICMP_EQ) return Arg1 == Arg2;
// assert(0 && "unsupported cmp and type size combination");
return true;
}
// As a simplification we use the range of input bytes instead of a set of input
// bytes.
struct LabelRange {
uint16_t Beg, End; // Range is [Beg, End), thus Beg==End is an empty range.
LabelRange(uint16_t Beg = 0, uint16_t End = 0) : Beg(Beg), End(End) {}
static LabelRange Join(LabelRange LR1, LabelRange LR2) {
if (LR1.Beg == LR1.End) return LR2;
if (LR2.Beg == LR2.End) return LR1;
return {std::min(LR1.Beg, LR2.Beg), std::max(LR1.End, LR2.End)};
}
LabelRange &Join(LabelRange LR) {
return *this = Join(*this, LR);
}
static LabelRange Singleton(const dfsan_label_info *LI) {
uint16_t Idx = (uint16_t)(uintptr_t)LI->userdata;
assert(Idx > 0);
return {(uint16_t)(Idx - 1), Idx};
}
};
// For now, very simple: put Size bytes of Data at position Pos.
struct TraceBasedMutation {
uint32_t Pos;
@ -189,17 +45,6 @@ public:
const Fuzzer *F)
: MD(MD), Options(Options), F(F) {}
LabelRange GetLabelRange(dfsan_label L);
void DFSanCmpCallback(uintptr_t PC, size_t CmpSize, size_t CmpType,
uint64_t Arg1, uint64_t Arg2, dfsan_label L1,
dfsan_label L2);
void DFSanMemcmpCallback(size_t CmpSize, const uint8_t *Data1,
const uint8_t *Data2, dfsan_label L1,
dfsan_label L2);
void DFSanSwitchCallback(uint64_t PC, size_t ValSizeInBits, uint64_t Val,
size_t NumCases, uint64_t *Cases, dfsan_label L);
void TraceCmpCallback(uintptr_t PC, size_t CmpSize, size_t CmpType,
uint64_t Arg1, uint64_t Arg2);
void TraceMemcmpCallback(size_t CmpSize, const uint8_t *Data1,
const uint8_t *Data2);
@ -270,17 +115,6 @@ public:
InterestingWords.insert(W);
}
void EnsureDfsanLabels(size_t Size) {
for (; LastDfsanLabel < Size; LastDfsanLabel++) {
dfsan_label L = dfsan_create_label("input", (void *)(LastDfsanLabel + 1));
// We assume that no one else has called dfsan_create_label before.
if (L != LastDfsanLabel + 1) {
Printf("DFSan labels are not starting from 1, exiting\n");
exit(1);
}
}
}
private:
bool IsTwoByteData(uint64_t Data) {
int64_t Signed = static_cast<int64_t>(Data);
@ -308,8 +142,6 @@ public:
TraceBasedMutation Mutations[kMaxMutations];
// TODO: std::set is too inefficient, need to have a custom DS here.
std::set<Word> InterestingWords;
LabelRange LabelRanges[1 << (sizeof(dfsan_label) * 8)];
size_t LastDfsanLabel = 0;
MutationDispatcher &MD;
const FuzzingOptions Options;
const Fuzzer *F;
@ -317,93 +149,6 @@ public:
size_t AutoDictAdds = 0;
};
LabelRange TraceState::GetLabelRange(dfsan_label L) {
LabelRange &LR = LabelRanges[L];
if (LR.Beg < LR.End || L == 0)
return LR;
const dfsan_label_info *LI = dfsan_get_label_info(L);
if (LI->l1 || LI->l2)
return LR = LabelRange::Join(GetLabelRange(LI->l1), GetLabelRange(LI->l2));
return LR = LabelRange::Singleton(LI);
}
void TraceState::DFSanCmpCallback(uintptr_t PC, size_t CmpSize, size_t CmpType,
uint64_t Arg1, uint64_t Arg2, dfsan_label L1,
dfsan_label L2) {
assert(ReallyHaveDFSan());
if (!F->InFuzzingThread()) return;
if (L1 == 0 && L2 == 0)
return; // Not actionable.
if (L1 != 0 && L2 != 0)
return; // Probably still actionable.
bool Res = ComputeCmp(CmpSize, CmpType, Arg1, Arg2);
uint64_t Data = L1 ? Arg2 : Arg1;
LabelRange LR = L1 ? GetLabelRange(L1) : GetLabelRange(L2);
for (size_t Pos = LR.Beg; Pos + CmpSize <= LR.End; Pos++) {
AddMutation(Pos, CmpSize, Data);
AddMutation(Pos, CmpSize, Data + 1);
AddMutation(Pos, CmpSize, Data - 1);
}
if (CmpSize > (size_t)(LR.End - LR.Beg))
AddMutation(LR.Beg, (unsigned)(LR.End - LR.Beg), Data);
if (Options.Verbosity >= 3)
Printf("DFSanCmpCallback: PC %lx S %zd T %zd A1 %llx A2 %llx R %d L1 %d L2 "
"%d MU %zd\n",
PC, CmpSize, CmpType, Arg1, Arg2, Res, L1, L2, NumMutations);
}
void TraceState::DFSanMemcmpCallback(size_t CmpSize, const uint8_t *Data1,
const uint8_t *Data2, dfsan_label L1,
dfsan_label L2) {
assert(ReallyHaveDFSan());
if (!RecordingMemcmp || !F->InFuzzingThread()) return;
if (L1 == 0 && L2 == 0)
return; // Not actionable.
if (L1 != 0 && L2 != 0)
return; // Probably still actionable.
const uint8_t *Data = L1 ? Data2 : Data1;
LabelRange LR = L1 ? GetLabelRange(L1) : GetLabelRange(L2);
for (size_t Pos = LR.Beg; Pos + CmpSize <= LR.End; Pos++) {
AddMutation(Pos, CmpSize, Data);
if (Options.Verbosity >= 3)
Printf("DFSanMemcmpCallback: Pos %d Size %d\n", Pos, CmpSize);
}
}
void TraceState::DFSanSwitchCallback(uint64_t PC, size_t ValSizeInBits,
uint64_t Val, size_t NumCases,
uint64_t *Cases, dfsan_label L) {
assert(ReallyHaveDFSan());
if (!F->InFuzzingThread()) return;
if (!L) return; // Not actionable.
LabelRange LR = GetLabelRange(L);
size_t ValSize = ValSizeInBits / 8;
bool TryShort = IsTwoByteData(Val);
for (size_t i = 0; i < NumCases; i++)
TryShort &= IsTwoByteData(Cases[i]);
for (size_t Pos = LR.Beg; Pos + ValSize <= LR.End; Pos++)
for (size_t i = 0; i < NumCases; i++)
AddMutation(Pos, ValSize, Cases[i]);
if (TryShort)
for (size_t Pos = LR.Beg; Pos + 2 <= LR.End; Pos++)
for (size_t i = 0; i < NumCases; i++)
AddMutation(Pos, 2, Cases[i]);
if (Options.Verbosity >= 3)
Printf("DFSanSwitchCallback: PC %lx Val %zd SZ %zd # %zd L %d: {%d, %d} "
"TryShort %d\n",
PC, Val, ValSize, NumCases, L, LR.Beg, LR.End, TryShort);
}
int TraceState::TryToAddDesiredData(uint64_t PresentData, uint64_t DesiredData,
size_t DataSize) {
if (NumMutations >= kMaxMutations || !WantToHandleOneMoreMutation()) return 0;
@ -449,22 +194,6 @@ int TraceState::TryToAddDesiredData(const uint8_t *PresentData,
return Res;
}
void TraceState::TraceCmpCallback(uintptr_t PC, size_t CmpSize, size_t CmpType,
uint64_t Arg1, uint64_t Arg2) {
if (!F->InFuzzingThread()) return;
if ((CmpType == ICMP_EQ || CmpType == ICMP_NE) && Arg1 == Arg2)
return; // No reason to mutate.
int Added = 0;
Added += TryToAddDesiredData(Arg1, Arg2, CmpSize);
Added += TryToAddDesiredData(Arg2, Arg1, CmpSize);
if (!Added && CmpSize == 4 && IsTwoByteData(Arg1) && IsTwoByteData(Arg2)) {
Added += TryToAddDesiredData(Arg1, Arg2, 2);
Added += TryToAddDesiredData(Arg2, Arg1, 2);
}
if (Options.Verbosity >= 3 && Added)
Printf("TraceCmp %zd/%zd: %p %zd %zd\n", CmpSize, CmpType, PC, Arg1, Arg2);
}
void TraceState::TraceMemcmpCallback(size_t CmpSize, const uint8_t *Data1,
const uint8_t *Data2) {
if (!RecordingMemcmp || !F->InFuzzingThread()) return;
@ -511,14 +240,6 @@ void Fuzzer::StopTraceRecording() {
TS->StopTraceRecording();
}
void Fuzzer::AssignTaintLabels(uint8_t *Data, size_t Size) {
if (!Options.UseMemcmp) return;
if (!ReallyHaveDFSan()) return;
TS->EnsureDfsanLabels(Size);
for (size_t i = 0; i < Size; i++)
dfsan_set_label(i + 1, &Data[i], 1);
}
void Fuzzer::InitializeTraceState() {
if (!Options.UseMemcmp) return;
TS = new TraceState(MD, Options, this);
@ -598,60 +319,6 @@ using fuzzer::TS;
using fuzzer::RecordingMemcmp;
extern "C" {
void __dfsw___sanitizer_cov_trace_cmp(uint64_t SizeAndType, uint64_t Arg1,
uint64_t Arg2, dfsan_label L0,
dfsan_label L1, dfsan_label L2) {
}
#define DFSAN_CMP_CALLBACK(N) \
void __dfsw___sanitizer_cov_trace_cmp##N(uint64_t Arg1, uint64_t Arg2, \
dfsan_label L1, dfsan_label L2) { \
}
DFSAN_CMP_CALLBACK(1)
DFSAN_CMP_CALLBACK(2)
DFSAN_CMP_CALLBACK(4)
DFSAN_CMP_CALLBACK(8)
#undef DFSAN_CMP_CALLBACK
void __dfsw___sanitizer_cov_trace_switch(uint64_t Val, uint64_t *Cases,
dfsan_label L1, dfsan_label L2) {
}
void dfsan_weak_hook_memcmp(void *caller_pc, const void *s1, const void *s2,
size_t n, dfsan_label s1_label,
dfsan_label s2_label, dfsan_label n_label) {
if (!RecordingMemcmp) return;
dfsan_label L1 = dfsan_read_label(s1, n);
dfsan_label L2 = dfsan_read_label(s2, n);
TS->DFSanMemcmpCallback(n, reinterpret_cast<const uint8_t *>(s1),
reinterpret_cast<const uint8_t *>(s2), L1, L2);
}
void dfsan_weak_hook_strncmp(void *caller_pc, const char *s1, const char *s2,
size_t n, dfsan_label s1_label,
dfsan_label s2_label, dfsan_label n_label) {
if (!RecordingMemcmp) return;
n = std::min(n, fuzzer::InternalStrnlen(s1, n));
n = std::min(n, fuzzer::InternalStrnlen(s2, n));
dfsan_label L1 = dfsan_read_label(s1, n);
dfsan_label L2 = dfsan_read_label(s2, n);
TS->DFSanMemcmpCallback(n, reinterpret_cast<const uint8_t *>(s1),
reinterpret_cast<const uint8_t *>(s2), L1, L2);
}
void dfsan_weak_hook_strcmp(void *caller_pc, const char *s1, const char *s2,
dfsan_label s1_label, dfsan_label s2_label) {
if (!RecordingMemcmp) return;
size_t Len1 = strlen(s1);
size_t Len2 = strlen(s2);
size_t N = std::min(Len1, Len2);
if (N <= 1) return; // Not interesting.
dfsan_label L1 = dfsan_read_label(s1, Len1);
dfsan_label L2 = dfsan_read_label(s2, Len2);
TS->DFSanMemcmpCallback(N, reinterpret_cast<const uint8_t *>(s1),
reinterpret_cast<const uint8_t *>(s2), L1, L2);
}
// We may need to avoid defining weak hooks to stay compatible with older clang.
#ifndef LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS

10
lib/Fuzzer/test/CMakeLists.txt
View File

@ -152,16 +152,6 @@ set_target_properties(LLVMFuzzer-Unittest
include_directories(..)
if(APPLE)
message(WARNING "DataflowSanitizer is not supported on Apple platforms."
" Building and running LibFuzzer DataflowSanitizer tests is disabled."
)
set(HAS_DFSAN 0)
else()
set(HAS_DFSAN 1)
add_subdirectory(dfsan)
endif()
add_subdirectory(uninstrumented)
add_subdirectory(no-coverage)
add_subdirectory(ubsan)

19
lib/Fuzzer/test/dfsan/CMakeLists.txt
View File

@ -1,19 +0,0 @@
# These tests depend on both coverage and dfsan instrumentation.
set(CMAKE_CXX_FLAGS
"${LIBFUZZER_FLAGS_BASE} -fno-sanitize=all -fsanitize=dataflow")
set(DFSanTests
MemcmpTest
SimpleCmpTest
StrcmpTest
StrncmpTest
SwitchTest
)
foreach(Test ${DFSanTests})
add_libfuzzer_test(${Test}-DFSan SOURCES ../${Test}.cpp)
endforeach()
# Propagate value into parent directory
set(TestBinaries ${TestBinaries} PARENT_SCOPE)

16
lib/Fuzzer/test/fuzzer-dfsan.test
View File

@ -1,16 +0,0 @@
REQUIRES: dfsan
CHECK1: BINGO
CHECK2: BINGO
CHECK3: BINGO
CHECK4: BINGO
CHECK_DFSanMemcmpCallback: DFSanMemcmpCallback: Pos
RUN: not LLVMFuzzer-MemcmpTest-DFSan -use_traces=1 -seed=1 -runs=100000 -timeout=5 2>&1 | FileCheck %s --check-prefix=CHECK2
RUN: LLVMFuzzer-MemcmpTest-DFSan -use_traces=1 -seed=1 -runs=2 -timeout=5 -verbosity=3 2>&1 | FileCheck %s -check-prefix=CHECK_DFSanMemcmpCallback
RUN: not LLVMFuzzer-StrncmpTest-DFSan -use_traces=1 -seed=1 -runs=10000 -timeout=5 2>&1 | FileCheck %s --check-prefix=CHECK3
RUN: LLVMFuzzer-StrncmpTest-DFSan -use_traces=1 -seed=1 -runs=2 -timeout=5 -verbosity=3 2>&1 | FileCheck %s -check-prefix=CHECK_DFSanMemcmpCallback
RUN: not LLVMFuzzer-StrcmpTest-DFSan -use_traces=1 -seed=1 -runs=10000 -timeout=5 2>&1 | FileCheck %s --check-prefix=CHECK3
RUN: LLVMFuzzer-StrcmpTest-DFSan -use_traces=1 -seed=1 -runs=2 -timeout=5 -verbosity=3 2>&1 | FileCheck %s -check-prefix=CHECK_DFSanMemcmpCallback

6
lib/Fuzzer/test/lit.cfg
View File

@ -14,12 +14,6 @@ path = os.path.pathsep.join((llvm_tools_dir, config.test_exec_root,
config.environment['PATH']))
config.environment['PATH'] = path
if config.has_dfsan:
lit_config.note('dfsan feature available')
config.available_features.add('dfsan')
else:
lit_config.note('dfsan feature unavailable')
if config.has_lsan:
lit_config.note('lsan feature available')
config.available_features.add('lsan')

1
lib/Fuzzer/test/lit.site.cfg.in
View File

@ -1,5 +1,4 @@
config.test_exec_root = "@CMAKE_CURRENT_BINARY_DIR@"
config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
config.has_dfsan = True if @HAS_DFSAN@ == 1 else False
config.has_lsan = True if @HAS_LSAN@ == 1 else False
lit_config.load_config(config, "@CMAKE_CURRENT_SOURCE_DIR@/lit.cfg")