phosek created this revision.
phosek added reviewers: mcgrathr, leonardchan.
Herald added subscribers: cfe-commits, mgorny.
Herald added a project: clang.
phosek requested review of this revision.
This is analogous to the existing ASan multilib.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D91387
Files:
clang/cmake/caches/Fuchsia-stage2.cmake
clang/lib/Driver/ToolChains/Fuchsia.cpp
clang/test/Driver/fuchsia.cpp
Index: clang/test/Driver/fuchsia.cpp
===================================================================
--- clang/test/Driver/fuchsia.cpp
+++ clang/test/Driver/fuchsia.cpp
@@ -71,23 +71,35 @@
// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
// RUN: -fuse-ld=lld 2>&1\
// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86
-// RUN: %clangxx %s -### --target=x86_64-fuchsia -fsanitize=address \
+// RUN: %clangxx %s -### --target=x86_64-fuchsia -fno-exceptions \
// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
// RUN: -fuse-ld=lld 2>&1\
-// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-ASAN-X86
-// RUN: %clangxx %s -### --target=x86_64-fuchsia -fno-exceptions \
+// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-NOEXCEPT-X86
+// RUN: %clangxx %s -### --target=x86_64-fuchsia -fsanitize=address \
// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
// RUN: -fuse-ld=lld 2>&1\
-// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-NOEXCEPT-X86
+// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-ASAN-X86
// RUN: %clangxx %s -### --target=x86_64-fuchsia -fsanitize=address -fno-exceptions \
// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
// RUN: -fuse-ld=lld 2>&1\
// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-ASAN-NOEXCEPT-X86
+// RUN: %clangxx %s -### --target=x86_64-fuchsia -fsanitize=undefined \
+// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
+// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
+// RUN: -fuse-ld=lld 2>&1\
+// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-UBSAN-X86
+// RUN: %clangxx %s -### --target=x86_64-fuchsia -fsanitize=undefined -fno-exceptions \
+// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
+// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
+// RUN: -fuse-ld=lld 2>&1\
+// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-UBSAN-NOEXCEPT-X86
// CHECK-MULTILIB-X86: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
+// CHECK-MULTILIB-ASAN-NOEXCEPT-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}asan+noexcept"
// CHECK-MULTILIB-ASAN-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}asan"
+// CHECK-MULTILIB-UBSAN-NOEXCEPT-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}ubsan+noexcept"
+// CHECK-MULTILIB-UBSAN-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}ubsan"
// CHECK-MULTILIB-NOEXCEPT-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}noexcept"
-// CHECK-MULTILIB-ASAN-NOEXCEPT-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}asan+noexcept"
// CHECK-MULTILIB-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++"
Index: clang/lib/Driver/ToolChains/Fuchsia.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Fuchsia.cpp
+++ clang/lib/Driver/ToolChains/Fuchsia.cpp
@@ -202,11 +202,19 @@
Multilibs.push_back(Multilib("noexcept", {}, {}, 1)
.flag("-fexceptions")
.flag("+fno-exceptions"));
+ // UBSan has lower priority than ASan so we pick the latter when both are set.
+ Multilibs.push_back(Multilib("ubsan", {}, {}, 2)
+ .flag("+fsanitize=undefined"));
+ // Use the ubsan+noexcept variant with UBSan and -fno-exceptions.
+ Multilibs.push_back(Multilib("ubsan+noexcept", {}, {}, 3)
+ .flag("+fsanitize=undefined")
+ .flag("-fexceptions")
+ .flag("+fno-exceptions"));
// ASan has higher priority because we always want the instrumentated version.
- Multilibs.push_back(Multilib("asan", {}, {}, 2)
+ Multilibs.push_back(Multilib("asan", {}, {}, 4)
.flag("+fsanitize=address"));
// Use the asan+noexcept variant with ASan and -fno-exceptions.
- Multilibs.push_back(Multilib("asan+noexcept", {}, {}, 3)
+ Multilibs.push_back(Multilib("asan+noexcept", {}, {}, 5)
.flag("+fsanitize=address")
.flag("-fexceptions")
.flag("+fno-exceptions"));
@@ -221,6 +229,7 @@
addMultilibFlag(
Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions, true),
"fexceptions", Flags);
+ addMultilibFlag(getSanitizerArgs().needsUbsanRt(), "fsanitize=undefined", Flags);
addMultilibFlag(getSanitizerArgs().needsAsanRt(), "fsanitize=address", Flags);
Multilibs.setFilePathsCallback(FilePaths);
Index: clang/cmake/caches/Fuchsia-stage2.cmake
===================================================================
--- clang/cmake/caches/Fuchsia-stage2.cmake
+++ clang/cmake/caches/Fuchsia-stage2.cmake
@@ -211,14 +211,23 @@
set(RUNTIMES_${target}-unknown-fuchsia+asan+noexcept_LIBCXXABI_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
set(RUNTIMES_${target}-unknown-fuchsia+asan+noexcept_LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
+ set(RUNTIMES_${target}-unknown-fuchsia+ubsan+noexcept_LLVM_BUILD_COMPILER_RT OFF CACHE BOOL "")
+ set(RUNTIMES_${target}-unknown-fuchsia+ubsan+noexcept_LLVM_USE_SANITIZER "Undefined" CACHE STRING "")
+ set(RUNTIMES_${target}-unknown-fuchsia+ubsan+noexcept_LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS OFF CACHE BOOL "")
+ set(RUNTIMES_${target}-unknown-fuchsia+ubsan+noexcept_LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS OFF CACHE BOOL "")
+ set(RUNTIMES_${target}-unknown-fuchsia+ubsan+noexcept_LIBCXXABI_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
+ set(RUNTIMES_${target}-unknown-fuchsia+ubsan+noexcept_LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
+
# Use .build-id link.
list(APPEND RUNTIME_BUILD_ID_LINK "${target}-unknown-fuchsia")
endforeach()
- set(LLVM_RUNTIME_MULTILIBS "asan;noexcept;asan+noexcept" CACHE STRING "")
+ set(LLVM_RUNTIME_MULTILIBS "asan;noexcept;asan+noexcept;ubsan;ubsan+noexcept" CACHE STRING "")
set(LLVM_RUNTIME_MULTILIB_asan_TARGETS "x86_64-unknown-fuchsia;aarch64-unknown-fuchsia" CACHE STRING "")
set(LLVM_RUNTIME_MULTILIB_noexcept_TARGETS "x86_64-unknown-fuchsia;aarch64-unknown-fuchsia" CACHE STRING "")
set(LLVM_RUNTIME_MULTILIB_asan+noexcept_TARGETS "x86_64-unknown-fuchsia;aarch64-unknown-fuchsia" CACHE STRING "")
+ set(LLVM_RUNTIME_MULTILIB_ubsan_TARGETS "x86_64-unknown-fuchsia;aarch64-unknown-fuchsia" CACHE STRING "")
+ set(LLVM_RUNTIME_MULTILIB_ubsan+noexcept_TARGETS "x86_64-unknown-fuchsia;aarch64-unknown-fuchsia" CACHE STRING "")
endif()
set(LLVM_BUILTIN_TARGETS "${BUILTIN_TARGETS}" CACHE STRING "")
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