Add feature for realtime sanitizer, add incompatible sanitizers

Author: cjappl

clang/include/clang/Basic/Features.def

@@ -103,6 +103,7 @@ FEATURE(memory_sanitizer,
 FEATURE(thread_sanitizer, LangOpts.Sanitize.has(SanitizerKind::Thread))
 FEATURE(dataflow_sanitizer, LangOpts.Sanitize.has(SanitizerKind::DataFlow))
 FEATURE(scudo, LangOpts.Sanitize.hasOneOf(SanitizerKind::Scudo))
+FEATURE(realtime_sanitizer, LangOpts.Sanitize.hasOneOf(SanitizerKind::Realtime))
 FEATURE(ptrauth_intrinsics, LangOpts.PointerAuthIntrinsics)
 FEATURE(ptrauth_calls, LangOpts.PointerAuthCalls)
 FEATURE(ptrauth_returns, LangOpts.PointerAuthReturns)

clang/lib/Driver/SanitizerArgs.cpp

@@ -556,7 +556,10 @@ SanitizerArgs::SanitizerArgs(const ToolChain &TC,
                      SanitizerKind::Address | SanitizerKind::KernelAddress |
                          SanitizerKind::HWAddress |
                          SanitizerKind::KernelHWAddress),
-      std::make_pair(SanitizerKind::KCFI, SanitizerKind::Function)};
+      std::make_pair(SanitizerKind::KCFI, SanitizerKind::Function),
+      std::make_pair(SanitizerKind::Realtime,
+                    SanitizerKind::Address | SanitizerKind::Thread ),
+      };
   // Enable toolchain specific default sanitizers if not explicitly disabled.
   SanitizerMask Default = TC.getDefaultSanitizers() & ~AllRemove;
 

clang/test/Driver/rtsan.c

@@ -31,3 +31,6 @@
 
 // RUN: not %clang --target=i386-pc-openbsd -fsanitize=realtime %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-RTSAN-OPENBSD
 // CHECK-RTSAN-OPENBSD: unsupported option '-fsanitize=realtime' for target 'i386-pc-openbsd'
+
+// RUN: not %clang --target=x86_64-linux-gnu -fsanitize=realtime,thread  %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-REALTIME-TSAN
+// CHECK-REALTIME-TSAN: error: invalid argument '-fsanitize=realtime' not allowed with '-fsanitize=thread'