[PATCH] Protection against stack-based memory corruption errors using SafeStack: Clang command line option and function attribute

[Volodymyr Kuznetsov]

================
Comment at: include/clang/Basic/LangOptions.def:202
@@ -201,3 +201,3 @@
              "type symbol visibility")
-ENUM_LANGOPT(StackProtector, StackProtectorMode, 2, SSPOff,
+ENUM_LANGOPT(StackProtector, StackProtectorMode, 3, SSPOff,
              "stack protector mode")
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Since SSPSafeStack no longer exists, this should be reverted as well.

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Comment at: lib/Driver/Tools.cpp:6283
@@ +6282,3 @@
+    CmdArgs.push_back("-u");
+    CmdArgs.push_back("___safestack_init");
+  }
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Is this still required, even though we have AlwaysLink=true above?

http://reviews.llvm.org/D6095

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