Index: lib/Driver/ToolChains/Linux.cpp =================================================================== --- lib/Driver/ToolChains/Linux.cpp +++ lib/Driver/ToolChains/Linux.cpp @@ -1019,7 +1019,7 @@ // Add linker option -u__llvm_runtime_variable to cause runtime // initialization module to be linked in. - if (!Args.hasArg(options::OPT_coverage)) + if ((!Args.hasArg(options::OPT_coverage)) && (!Args.hasArg(options::OPT_ftest_coverage))) CmdArgs.push_back(Args.MakeArgString( Twine("-u", llvm::getInstrProfRuntimeHookVarName()))); ToolChain::addProfileRTLibs(Args, CmdArgs); Index: test/Driver/clang_f_opts.c =================================================================== --- test/Driver/clang_f_opts.c +++ test/Driver/clang_f_opts.c @@ -85,6 +85,10 @@ // CHECK-PROFILE-DIR-UNUSED-NOT: "-coverage-data-file" "abc // CHECK-PROFILE-DIR-NEITHER-NOT: argument unused +// RUN: %clang -### -fprofile-arcs -ftest-coverage %s 2>&1 | FileCheck -check-prefix=CHECK-u %s +// RUN: %clang -### --coverage %s 2>&1 | FileCheck -check-prefix=CHECK-u %s +// CHECK-u-NOT: "-u{{.*}}" + // RUN: %clang -### -S -fprofile-generate %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE-LLVM %s // RUN: %clang -### -S -fprofile-instr-generate %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE %s // RUN: %clang -### -S -fprofile-generate=/some/dir %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE-DIR %s