[TestBuiltinTrap] Change skipIfGcc to expectedFailure for GCC <= 4.6.

Test Plan: dotest.py -C gcc -p TestBuiltinTrap

Reviewers: vharron

Reviewed By: vharron

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D9117

llvm-svn: 237922

lldb/test/linux/builtin_trap/TestBuiltinTrap.py

@@ -21,9 +21,7 @@ class BuiltinTrapTestCase(TestBase):
         self.builtin_trap_unwind()
 
     @dwarf_test
-    @expectedFailureGcc # llvm.org/pr15936: LLDB is omits a function that contains an
-                        #           illegal opcode from backtraces. This
-                        #           failure is GCC 4.6 specific.
+    @expectedFailureAll("llvm.org/pr15936", compiler="gcc", compiler_version=["<=","4.6"])
     def test_with_dwarf_and_run_command(self):
         """Test that LLDB handles a function with __builtin_trap correctly."""
         self.buildDwarf()