Fix a use after free. Patch by Frits van Bommel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119842 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp
index ae66110..38ef084 100644 (file)
--- a/lib/Support/CommandLine.cpp
+++ b/lib/Support/CommandLine.cpp
@@ -765,6 +765,15 @@ void cl::ParseCommandLineOptions(int argc, char **argv,
     }
   }
 
+  // Now that we know if -debug is specified, we can use it.
+  // Note that if ReadResponseFiles == true, this must be done before the
+  // memory allocated for the expanded command line is free()d below.
+  DEBUG(dbgs() << "Args: ";
+        for (int i = 0; i < argc; ++i)
+          dbgs() << argv[i] << ' ';
+        dbgs() << '\n';
+       );
+
   // Free all of the memory allocated to the map.  Command line options may only
   // be processed once!
   Opts.clear();
@@ -779,12 +788,6 @@ void cl::ParseCommandLineOptions(int argc, char **argv,
       free(*i);
   }
 
-  DEBUG(dbgs() << "Args: ";
-        for (int i = 0; i < argc; ++i)
-          dbgs() << argv[i] << ' ';
-        dbgs() << '\n';
-       );
-
   // If we had an error processing our arguments, don't let the program execute
   if (ErrorParsing) exit(1);
 }