When building ubsan, link in ubsan parts first and sanitizer-common second, to
pick up the common bits ubsan actually needs. Also remove whole-archive when we
aren't trying to re-export the symbols.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193022 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index d6ddd02..c85ff8d 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1705,13 +1705,15 @@
// Sanitizer runtime may need to come before -lstdc++ (or -lc++, libstdc++.a,
// etc.) so that the linker picks custom versions of the global 'operator
// new' and 'operator delete' symbols. We take the extreme (but simple)
- // strategy of inserting it at the front of the link command. It also
- // needs to be forced to end up in the executable, so wrap it in
- // whole-archive.
+ // strategy of inserting it at the front of the link command. If we're
+ // responsible for exporting the symbols then it also needs to be forced to
+ // end up in the executable, so wrap it in whole-archive.
SmallVector<const char *, 3> LibSanitizerArgs;
- LibSanitizerArgs.push_back("-whole-archive");
+ if (ExportSymbols)
+ LibSanitizerArgs.push_back("-whole-archive");
LibSanitizerArgs.push_back(Args.MakeArgString(LibSanitizer));
- LibSanitizerArgs.push_back("-no-whole-archive");
+ if (ExportSymbols)
+ LibSanitizerArgs.push_back("-no-whole-archive");
CmdArgs.insert(BeforeLibStdCXX ? CmdArgs.begin() : CmdArgs.end(),
LibSanitizerArgs.begin(), LibSanitizerArgs.end());
@@ -1777,17 +1779,17 @@
static void addUbsanRTLinux(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs, bool IsCXX,
bool HasOtherSanitizerRt) {
- // Need a copy of sanitizer_common. This could come from another sanitizer
- // runtime; if we're not including one, include our own copy.
- if (!HasOtherSanitizerRt)
- addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "san", true, false);
-
- addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "ubsan", false);
+ addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "ubsan", false, false);
// Only include the bits of the runtime which need a C++ ABI library if
// we're linking in C++ mode.
if (IsCXX)
- addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "ubsan_cxx", false);
+ addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "ubsan_cxx", false, false);
+
+ // Need a copy of sanitizer_common. This could come from another sanitizer
+ // runtime; if we're not including one, include our own copy.
+ if (!HasOtherSanitizerRt)
+ addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "san", false, false);
}
static void addDfsanRTLinux(const ToolChain &TC, const ArgList &Args,