[Driver] Don't disable -fsanitizer-coverage for safe-stack or shadow-call-stack

These "sanitizers" are hardened ABIs that are wholly orthogonal
to the SanitizerCoverage instrumentation.

Differential Revision: https://reviews.llvm.org/D65715

llvm-svn: 367799

diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp
index baf3554..814e952 100644 (file)
--- a/clang/lib/Driver/SanitizerArgs.cpp
+++ b/clang/lib/Driver/SanitizerArgs.cpp
@@ -46,7 +46,8 @@ static const SanitizerMask SupportsCoverage =
     SanitizerKind::Undefined | SanitizerKind::Integer |
     SanitizerKind::ImplicitConversion | SanitizerKind::Nullability |
     SanitizerKind::DataFlow | SanitizerKind::Fuzzer |
-    SanitizerKind::FuzzerNoLink | SanitizerKind::FloatDivideByZero;
+    SanitizerKind::FuzzerNoLink | SanitizerKind::FloatDivideByZero |
+    SanitizerKind::SafeStack | SanitizerKind::ShadowCallStack;
 static const SanitizerMask RecoverableByDefault =
     SanitizerKind::Undefined | SanitizerKind::Integer |
     SanitizerKind::ImplicitConversion | SanitizerKind::Nullability |

diff --git a/clang/test/Driver/fsanitize-coverage.c b/clang/test/Driver/fsanitize-coverage.c
index 20589e4..db66989 100644 (file)
--- a/clang/test/Driver/fsanitize-coverage.c
+++ b/clang/test/Driver/fsanitize-coverage.c
@@ -118,8 +118,8 @@
 // CLANG-CL-COVERAGE: -fsanitize=address
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=safe-stack -fsanitize-coverage=trace-pc-guard %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VS-SAFESTACK
+// CHECK-VS-SAFESTACK: -fsanitize-coverage-trace-pc-guard
 // CHECK-VS-SAFESTACK: -fsanitize=safe-stack
-// CHECK-VS-SAFESTACK-NOT: -fsanitize-coverage-trace-pc-guard
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=safe-stack -fsanitize-coverage=trace-pc-guard -fno-sanitize=safe-stack %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-SAFESTACK
 // CHECK-NO-SAFESTACK-NOT: error:
@@ -128,3 +128,15 @@
 // CHECK-NO-SAFESTACK-NOT: unknown argument
 // CHECK-NO-SAFESTACK-NOT: -fsanitize=safe-stack
 // CHECK-NO-SAFESTACK: -fsanitize-coverage-trace-pc-guard
+
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=shadow-call-stack -fsanitize-coverage=trace-pc-guard %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VS-SHADOWCALLSTACK
+// CHECK-VS-SHADOWCALLSTACK: -fsanitize-coverage-trace-pc-guard
+// CHECK-VS-SHADOWCALLSTACK: -fsanitize=shadow-call-stack
+
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=shadow-call-stack -fsanitize-coverage=trace-pc-guard -fno-sanitize=shadow-call-stack %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-SAFESTACK
+// CHECK-NO-SHADOWCALLSTACK-NOT: error:
+// CHECK-NO-SHADOWCALLSTACK-NOT: warning:
+// CHECK-NO-SHADOWCALLSTACK-NOT: argument unused
+// CHECK-NO-SHADOWCALLSTACK-NOT: unknown argument
+// CHECK-NO-SHADOWCALLSTACK-NOT: -fsanitize=shadow-call-stack
+// CHECK-NO-SHADOWCALLSTACK: -fsanitize-coverage-trace-pc-guard