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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!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@258698 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2016-01-25 18:29:16 +00:00
parent 7f54710ee0
commit 04d1d959fd
2 changed files with 20 additions and 0 deletions
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3
lib/Driver/Tools.cpp
View File

@ -9001,6 +9001,9 @@ void gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
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))

17
test/Driver/split-stack-ld.c Normal file
View File

@ -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"