r349650 - [Driver] [NetBSD] Add -D_REENTRANT when using sanitizers

[Michal Gorny via cfe-commits]

Author: mgorny
Date: Wed Dec 19 09:25:59 2018
New Revision: 349650

URL: http://llvm.org/viewvc/llvm-project?rev=349650&view=rev
Log:
[Driver] [NetBSD] Add -D_REENTRANT when using sanitizers

NetBSD intends to support only reentrant interfaces in interceptors.
When -lpthread is used without _REENTRANT defined, things are
not guaranteed to work.

This is especially important for <stdio.h> and sanitization of
interfaces around FILE.  Some APIs have alternative modes depending
on the _REENTRANT definition, and NetBSD intends to support sanitization
of the _REENTRANT ones.

Differential Revision: https://reviews.llvm.org/D55654

Modified:
    cfe/trunk/lib/Driver/ToolChains/NetBSD.cpp
    cfe/trunk/lib/Driver/ToolChains/NetBSD.h

Modified: cfe/trunk/lib/Driver/ToolChains/NetBSD.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/NetBSD.cpp?rev=349650&r1=349649&r2=349650&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/NetBSD.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains/NetBSD.cpp Wed Dec 19 09:25:59 2018
@@ -457,3 +457,11 @@ SanitizerMask NetBSD::getSupportedSaniti
   }
   return Res;
 }
+
+void NetBSD::addClangTargetOptions(const ArgList &,
+                                   ArgStringList &CC1Args,
+                                   Action::OffloadKind) const {
+  const SanitizerArgs &SanArgs = getSanitizerArgs();
+  if (SanArgs.hasAnySanitizer())
+    CC1Args.push_back("-D_REENTRANT");
+}

Modified: cfe/trunk/lib/Driver/ToolChains/NetBSD.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/NetBSD.h?rev=349650&r1=349649&r2=349650&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/NetBSD.h (original)
+++ cfe/trunk/lib/Driver/ToolChains/NetBSD.h Wed Dec 19 09:25:59 2018
@@ -76,6 +76,10 @@ public:
 
   SanitizerMask getSupportedSanitizers() const override;
 
+  void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+                             llvm::opt::ArgStringList &CC1Args,
+                             Action::OffloadKind DeviceOffloadKind) const override;
+
 protected:
   Tool *buildAssembler() const override;
   Tool *buildLinker() const override;