[PATCH] D29545: Driver: Do not link safestack with --whole-archive.

[Peter Collingbourne via Phabricator via cfe-commits]

pcc created this revision.

This allows it to be used with the other sanitizers.


https://reviews.llvm.org/D29545

Files:
  clang/lib/Driver/Tools.cpp
  clang/test/Driver/sanitizer-ld.c


Index: clang/test/Driver/sanitizer-ld.c
===================================================================
--- clang/test/Driver/sanitizer-ld.c
+++ clang/test/Driver/sanitizer-ld.c
@@ -416,7 +416,9 @@
 //
 // CHECK-SAFESTACK-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-SAFESTACK-LINUX-NOT: "-lc"
+// CHECK-SAFESTACK-LINUX-NOT: whole-archive
 // CHECK-SAFESTACK-LINUX: libclang_rt.safestack-x86_64.a"
+// CHECK-SAFESTACK-LINUX: "-u" "__safestack_init"
 // CHECK-SAFESTACK-LINUX: "-lpthread"
 // CHECK-SAFESTACK-LINUX: "-ldl"
 
Index: clang/lib/Driver/Tools.cpp
===================================================================
--- clang/lib/Driver/Tools.cpp
+++ clang/lib/Driver/Tools.cpp
@@ -3365,8 +3365,10 @@
     if (SanArgs.linkCXXRuntimes())
       StaticRuntimes.push_back("ubsan_standalone_cxx");
   }
-  if (SanArgs.needsSafeStackRt())
-    StaticRuntimes.push_back("safestack");
+  if (SanArgs.needsSafeStackRt()) {
+    NonWholeStaticRuntimes.push_back("safestack");
+    RequiredSymbols.push_back("__safestack_init");
+  }
   if (SanArgs.needsCfiRt())
     StaticRuntimes.push_back("cfi");
   if (SanArgs.needsCfiDiagRt()) {
@@ -3417,7 +3419,7 @@
   if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
     CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
 
-  return !StaticRuntimes.empty();
+  return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
 }
 
 static bool addXRayRuntime(const ToolChain &TC, const ArgList &Args,


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