phosek updated this revision to Diff 213237.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D65029/new/
https://reviews.llvm.org/D65029
Files:
clang/include/clang/Driver/Options.td
clang/include/clang/Driver/SanitizerArgs.h
clang/lib/Driver/SanitizerArgs.cpp
clang/test/Driver/sanitizer-ld.c
Index: clang/test/Driver/sanitizer-ld.c
===================================================================
--- clang/test/Driver/sanitizer-ld.c
+++ clang/test/Driver/sanitizer-ld.c
@@ -28,6 +28,14 @@
// RUN: --sysroot=%S/Inputs/basic_linux_tree \
// RUN: | FileCheck --check-prefix=CHECK-SHARED-ASAN-LINUX %s
+// RUN: %clang -fsanitize=address -fno-sanitize-link-runtime %s -### -o %t.o 2>&1 \
+// RUN: -target x86_64-unknown-linux -fuse-ld=ld \
+// RUN: -resource-dir=%S/Inputs/resource_dir \
+// RUN: --sysroot=%S/Inputs/basic_linux_tree \
+// RUN: | FileCheck --check-prefix=CHECK-ASAN-NO-LINK-RUNTIME-LINUX %s
+//
+// CHECK-ASAN-NO-LINK-RUNTIME-LINUX-NOT: libclang_rt.asan-x86_64.a"
+
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
// RUN: -target i386-unknown-linux -fuse-ld=ld -fsanitize=address \
// RUN: -shared-libsan -static-libsan -shared-libasan \
Index: clang/lib/Driver/SanitizerArgs.cpp
===================================================================
--- clang/lib/Driver/SanitizerArgs.cpp
+++ clang/lib/Driver/SanitizerArgs.cpp
@@ -208,7 +208,7 @@
// All of these include ubsan.
if (needsAsanRt() || needsMsanRt() || needsHwasanRt() || needsTsanRt() ||
needsDfsanRt() || needsLsanRt() || needsCfiDiagRt() ||
- (needsScudoRt() && !requiresMinimalRuntime()))
+ (needsScudoRt() && !requiresMinimalRuntime()) || !LinkRuntimes)
return false;
return (Sanitizers.Mask & NeedsUbsanRt & ~TrapSanitizers.Mask) ||
@@ -217,12 +217,12 @@
bool SanitizerArgs::needsCfiRt() const {
return !(Sanitizers.Mask & SanitizerKind::CFI & ~TrapSanitizers.Mask) &&
- CfiCrossDso && !ImplicitCfiRuntime;
+ CfiCrossDso && !ImplicitCfiRuntime && LinkRuntimes;
}
bool SanitizerArgs::needsCfiDiagRt() const {
return (Sanitizers.Mask & SanitizerKind::CFI & ~TrapSanitizers.Mask) &&
- CfiCrossDso && !ImplicitCfiRuntime;
+ CfiCrossDso && !ImplicitCfiRuntime && LinkRuntimes;
}
bool SanitizerArgs::requiresPIE() const {
@@ -265,6 +265,10 @@
Args.hasFlag(options::OPT_fsanitize_minimal_runtime,
options::OPT_fno_sanitize_minimal_runtime, MinimalRuntime);
+ LinkRuntimes =
+ Args.hasFlag(options::OPT_fsanitize_link_runtime,
+ options::OPT_fno_sanitize_link_runtime, LinkRuntimes);
+
// The object size sanitizer should not be enabled at -O0.
Arg *OptLevel = Args.getLastArg(options::OPT_O_Group);
bool RemoveObjectSizeAtO0 =
@@ -825,8 +829,10 @@
}
// Parse -link-cxx-sanitizer flag.
- LinkCXXRuntimes =
- Args.hasArg(options::OPT_fsanitize_link_cxx_runtime) || D.CCCIsCXX();
+ LinkCXXRuntimes = Args.hasArg(options::OPT_fsanitize_link_cxx_runtime,
+ options::OPT_fno_sanitize_link_cxx_runtime,
+ LinkCXXRuntimes) ||
+ D.CCCIsCXX();
// Finally, initialize the set of available and recoverable sanitizers.
Sanitizers.Mask |= Kinds;
Index: clang/include/clang/Driver/SanitizerArgs.h
===================================================================
--- clang/include/clang/Driver/SanitizerArgs.h
+++ clang/include/clang/Driver/SanitizerArgs.h
@@ -41,6 +41,7 @@
bool AsanInvalidPointerCmp = false;
bool AsanInvalidPointerSub = false;
std::string HwasanAbi;
+ bool LinkRuntimes = true;
bool LinkCXXRuntimes = false;
bool NeedPIE = false;
bool SafeStackRuntime = false;
@@ -58,24 +59,38 @@
bool needsSharedRt() const { return SharedRuntime; }
- bool needsAsanRt() const { return Sanitizers.has(SanitizerKind::Address); }
- bool needsHwasanRt() const { return Sanitizers.has(SanitizerKind::HWAddress); }
- bool needsTsanRt() const { return Sanitizers.has(SanitizerKind::Thread); }
- bool needsMsanRt() const { return Sanitizers.has(SanitizerKind::Memory); }
- bool needsFuzzer() const { return Sanitizers.has(SanitizerKind::Fuzzer); }
+ bool needsAsanRt() const {
+ return Sanitizers.has(SanitizerKind::Address) && LinkRuntimes;
+ }
+ bool needsHwasanRt() const {
+ return Sanitizers.has(SanitizerKind::HWAddress) && LinkRuntimes;
+ }
+ bool needsTsanRt() const {
+ return Sanitizers.has(SanitizerKind::Thread) && LinkRuntimes;
+ }
+ bool needsMsanRt() const {
+ return Sanitizers.has(SanitizerKind::Memory) && LinkRuntimes;
+ }
+ bool needsFuzzer() const {
+ return Sanitizers.has(SanitizerKind::Fuzzer) && LinkRuntimes;
+ }
bool needsLsanRt() const {
return Sanitizers.has(SanitizerKind::Leak) &&
!Sanitizers.has(SanitizerKind::Address) &&
- !Sanitizers.has(SanitizerKind::HWAddress);
+ !Sanitizers.has(SanitizerKind::HWAddress) && LinkRuntimes;
}
bool needsUbsanRt() const;
- bool requiresMinimalRuntime() const { return MinimalRuntime; }
- bool needsDfsanRt() const { return Sanitizers.has(SanitizerKind::DataFlow); }
- bool needsSafeStackRt() const { return SafeStackRuntime; }
+ bool requiresMinimalRuntime() const { return MinimalRuntime && LinkRuntimes; }
+ bool needsDfsanRt() const {
+ return Sanitizers.has(SanitizerKind::DataFlow) && LinkRuntimes;
+ }
+ bool needsSafeStackRt() const { return SafeStackRuntime && LinkRuntimes; }
bool needsCfiRt() const;
bool needsCfiDiagRt() const;
- bool needsStatsRt() const { return Stats; }
- bool needsScudoRt() const { return Sanitizers.has(SanitizerKind::Scudo); }
+ bool needsStatsRt() const { return Stats && LinkRuntimes; }
+ bool needsScudoRt() const {
+ return Sanitizers.has(SanitizerKind::Scudo) && LinkRuntimes;
+ }
bool requiresPIE() const;
bool needsUnwindTables() const;
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -1043,8 +1043,14 @@
Group<f_clang_Group>;
def fno_sanitize_minimal_runtime : Flag<["-"], "fno-sanitize-minimal-runtime">,
Group<f_clang_Group>;
+def fsanitize_link_runtime : Flag<["-"], "fsanitize-link-runtime">,
+ Group<f_clang_Group>;
+def fno_sanitize_link_runtime : Flag<["-"], "fno-sanitize-link-runtime">,
+ Group<f_clang_Group>;
def fsanitize_link_cxx_runtime : Flag<["-"], "fsanitize-link-c++-runtime">,
Group<f_clang_Group>;
+def fno_sanitize_link_cxx_runtime : Flag<["-"], "fno-sanitize-link-c++-runtime">,
+ Group<f_clang_Group>;
def fsanitize_cfi_cross_dso : Flag<["-"], "fsanitize-cfi-cross-dso">,
Group<f_clang_Group>,
HelpText<"Enable control flow integrity (CFI) checks for cross-DSO calls.">;
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