[driver] Add support for the --param ssp-buffer-size= driver option.

PR9673


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162285 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index e9f1aab90b..11429131d7 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2353,6 +2353,18 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   if (StackProtectorLevel) {
     CmdArgs.push_back("-stack-protector");
     CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
+
+    // --param ssp-buffer-size=
+    for (arg_iterator it = Args.filtered_begin(options::OPT__param),
+           ie = Args.filtered_end(); it != ie; ++it) {
+      StringRef Str((*it)->getValue(Args));
+      if (Str.startswith("ssp-buffer-size=")) {
+        CmdArgs.push_back("-stack-protector-buffer-size");
+        // FIXME: Verify the argument is a valid integer.
+        CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
+        (*it)->claim();
+      }
+    }
   }
 
   // Translate -mstackrealign