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path: root/main/llvm/clang-0008-alpine-PIE-by-default.patch
blob: 7f464527517d72ebba132d606b8bb1605b09aa28 (plain)
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diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 44e929f..3f25a36 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -3397,6 +3397,9 @@ void Linux::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
 }

 bool Linux::isPIEDefault() const {
+  StringRef VendorName = Linux::getTriple().getVendorName();
+  if (VendorName.compare("alpine") == 0)
+    return true;
   return getSanitizerArgs().requiresPIE();
 }

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 3e71522..9a0fc84 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -7462,7 +7462,9 @@ void gnutools::Link::ConstructJob(Compilation &C, const JobAction &JA,
   if (!D.SysRoot.empty())
     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));

-  if (IsPIE)
+  if (Args.hasArg(options::OPT_nopie))
+    CmdArgs.push_back("-nopie");
+  else if (IsPIE)
     CmdArgs.push_back("-pie");

   if (Args.hasArg(options::OPT_rdynamic))
diff --git a/test/Driver/pic.c b/test/Driver/pic.c
index a3d989c..b1a55ae 100644
--- a/test/Driver/pic.c
+++ b/test/Driver/pic.c
@@ -225,6 +225,18 @@
 // RUN: %clang %s -target i386-pc-openbsd -nopie -### 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=CHECK-NOPIE-LD
 //
+// On Alpine Linux, we want similar PIE-by-default behavior
+// RUN: %clang -c %s -target x86_64-alpine-linux-musl -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-PIE2
+// RUN: %clang -c %s -target i686-alpine-linux-musl -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-PIE2
+// RUN: %clang -c %s -target armv6-alpine-linux-musleabihf -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-PIE2
+// RUN: %clang -c %s -target armv7-alpine-linux-musleabihf -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-PIE2
+// RUN: %clang %s -target x86_64-alpine-linux-musl -nopie -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-NOPIE-LD
+//
 // On Android PIC is enabled by default
 // RUN: %clang -c %s -target i686-linux-android -### 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=CHECK-PIC2
--
2.1.4