From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Thu, 29 Oct 2015 03:36:45 +0000 (+0000)
Subject: Driver: CrossWindows sanitizers link support
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0e6de21771f300d5e56ebf866b1a7b13e3bfc094;p=clang

Driver: CrossWindows sanitizers link support

Add the required libraries to the linker invocation when building with
sanitizers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@251600 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 1b5d2ce877..3e4cb3144f 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -9746,6 +9746,22 @@ void CrossWindows::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     }
   }
 
+  if (TC.getSanitizerArgs().needsAsanRt()) {
+    // TODO handle /MT[d] /MD[d]
+    if (Args.hasArg(options::OPT_shared)) {
+      CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dll_thunk"));
+    } else {
+      for (const auto &Lib : {"asan_dynamic", "asan_dynamic_runtime_thunk"})
+        CmdArgs.push_back(TC.getCompilerRTArgString(Args, Lib));
+        // Make sure the dynamic runtime thunk is not optimized out at link time
+        // to ensure proper SEH handling.
+        CmdArgs.push_back(Args.MakeArgString("--undefined"));
+        CmdArgs.push_back(Args.MakeArgString(TC.getArch() == llvm::Triple::x86
+                                                 ? "___asan_seh_interceptor"
+                                                 : "__asan_seh_interceptor"));
+    }
+  }
+
   Exec = Args.MakeArgString(TC.GetLinkerPath());
 
   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
diff --git a/test/Driver/windows-cross.c b/test/Driver/windows-cross.c
index 3f83adf71d..222104b53c 100644
--- a/test/Driver/windows-cross.c
+++ b/test/Driver/windows-cross.c
@@ -47,6 +47,19 @@
 // RUN:    | FileCheck %s --check-prefix CHECK-SANITIZE-ADDRESS
 
 // CHECK-SANITIZE-ADDRESS: "-fsanitize=address"
+// CHECK-SANITIZE-ADDRESS: "{{.*}}clang_rt.asan_dll_thunk-arm.lib"
+
+// RUN: %clang -### -target armv7-windows-itanium --sysroot %S/Inputs/Windows/ARM/8.1 -B %S/Inputs/Windows/ARM/8.1/usr/bin -fuse-ld=lld-link2 -o test.exe -fsanitize=address -x c++ %s 2>&1 \
+// RUN:    | FileCheck %s --check-prefix CHECK-SANITIZE-ADDRESS-EXE
+
+// CHECK-SANITIZE-ADDRESS-EXE: "-fsanitize=address"
+// CHECK-SANITIZE-ADDRESS-EXE: "{{.*}}clang_rt.asan_dynamic-arm.lib" "{{.*}}clang_rt.asan_dynamic_runtime_thunk-arm.lib" "--undefined" "__asan_seh_interceptor"
+
+// RUN: %clang -### -target i686-windows-itanium -B %S/Inputs/Windows/ARM/8.1/usr/bin -fuse-ld=lld-link2 -o test.exe -fsanitize=address -x c++ %s 2>&1 \
+// RUN:    | FileCheck %s --check-prefix CHECK-SANITIZE-ADDRESS-EXE-X86
+
+// CHECK-SANITIZE-ADDRESS-EXE-X86: "-fsanitize=address"
+// CHECK-SANITIZE-ADDRESS-EXE-X86: "{{.*}}clang_rt.asan_dynamic-i686.lib" "{{.*}}clang_rt.asan_dynamic_runtime_thunk-i686.lib" "--undefined" "___asan_seh_interceptor"
 
 // RUN: %clang -### -target armv7-windows-itanium --sysroot %S/Inputs/Windows/ARM/8.1 -B %S/Inputs/Windows/ARM/8.1/usr/bin -fuse-ld=lld-link2 -shared -o shared.dll -fsanitize=tsan -x c++ %s 2>&1 \
 // RUN:    | FileCheck %s --check-prefix CHECK-SANITIZE-TSAN