Fix a couple of tests that were incorrectly using configuration.dwarf_version (llvm#114161)

The tests were using the variable directly to get the dwarf version used
for the test. That's only the overridden value, and won't be set if
we're using the compiler default. I also put a comment by the variable
to make sure people don't make the same mistake in the future.

(cherry picked from commit a575e6e)

Author: jimingham

lldb/packages/Python/lldbsuite/test/configuration.py

@@ -52,6 +52,10 @@
 python = sys.executable
 
 # The overriden dwarf verison.
+# Don't use this to test the current compiler's
+# DWARF version, as this won't be set if the
+# version isn't overridden.
+# Use lldbplatformutils.getDwarfVersion() instead.
 dwarf_version = 0
 
 # Any overridden settings.

lldb/test/API/lang/cpp/namespace/TestNamespaceLookup.py

@@ -8,7 +8,7 @@
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 from lldbsuite.test import lldbutil
-
+from lldbsuite.test import lldbplatformutil
 
 class NamespaceLookupTestCase(TestBase):
     def setUp(self):
@@ -167,7 +167,10 @@ def test_scope_lookup_with_run_command(self):
         self.runToBkpt("continue")
         # FIXME: In DWARF 5 with dsyms, the ordering of functions is slightly
         # different, which also hits the same issues mentioned previously.
-        if configuration.dwarf_version <= 4 or self.getDebugInfo() == "dwarf":
+        if (
+            int(lldbplatformutil.getDwarfVersion()) <= 4
+            or self.getDebugInfo() == "dwarf"
+        ):
             self.expect_expr("func()", result_type="int", result_value="2")
 
         # Continue to BP_ns_scope at ns scope

lldb/test/API/python_api/type/TestTypeList.py

@@ -6,7 +6,7 @@
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 from lldbsuite.test import lldbutil
-
+from lldbsuite.test import lldbplatformutil
 
 class TypeAndTypeListTestCase(TestBase):
     def setUp(self):
@@ -248,7 +248,7 @@ def test(self):
         self.assertEqual(myint_arr_element_type, myint_type)
 
         # Test enum methods. Requires DW_AT_enum_class which was added in Dwarf 4.
-        if configuration.dwarf_version >= 4:
+        if int(lldbplatformutil.getDwarfVersion()) >= 4:
             enum_type = target.FindFirstType("EnumType")
             self.assertTrue(enum_type)
             self.DebugSBType(enum_type)