Author: rafael Date: Mon Jan 25 12:29:16 2016 New Revision: 258698 URL: http://llvm.org/viewvc/llvm-project?rev=258698&view=rev Log: Pass --wrap=pthread_create to linker for -fsplit-stack.
From https://gcc.gnu.org/ml/gcc-patches/2010-09/msg01807.html -fsplit-stack should pass --wrap=pthread_create to linker for -fsplit-stack It is needed to initialize the stack guard. This fixes PR 20148. Patch by H.J Lu! Added: cfe/trunk/test/Driver/split-stack-ld.c Modified: cfe/trunk/lib/Driver/Tools.cpp Modified: cfe/trunk/lib/Driver/Tools.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=258698&r1=258697&r2=258698&view=diff ============================================================================== --- cfe/trunk/lib/Driver/Tools.cpp (original) +++ cfe/trunk/lib/Driver/Tools.cpp Mon Jan 25 12:29:16 2016 @@ -9001,6 +9001,9 @@ void gnutools::Linker::ConstructJob(Comp if (WantPthread && !isAndroid) CmdArgs.push_back("-lpthread"); + if (Args.hasArg(options::OPT_fsplit_stack)) + CmdArgs.push_back("--wrap=pthread_create"); + CmdArgs.push_back("-lc"); if (Args.hasArg(options::OPT_static)) Added: cfe/trunk/test/Driver/split-stack-ld.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/split-stack-ld.c?rev=258698&view=auto ============================================================================== --- cfe/trunk/test/Driver/split-stack-ld.c (added) +++ cfe/trunk/test/Driver/split-stack-ld.c Mon Jan 25 12:29:16 2016 @@ -0,0 +1,17 @@ +// Test split stack ld flags. +// +// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ +// RUN: -target i386-unknown-linux -fsplit-stack \ +// RUN: -resource-dir=%S/Inputs/resource_dir \ +// RUN: --sysroot=%S/Inputs/basic_linux_tree \ +// RUN: | FileCheck --check-prefix=CHECK-LINUX-I386 %s +// +// CHECK-LINUX-I386: "--wrap=pthread_create" +// +// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ +// RUN: -target x86_64-unknown-linux -fsplit-stack \ +// RUN: -resource-dir=%S/Inputs/resource_dir \ +// RUN: --sysroot=%S/Inputs/basic_linux_tree \ +// RUN: | FileCheck --check-prefix=CHECK-LINUX-X86-64 %s +// +// CHECK-LINUX-X86-64: "--wrap=pthread_create" _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
