folly: symbolizer: test: re-enable test on clang as .debug_aranges is produced by the compiler

Summary:
- the test was disabled in {D2299981} (2015)
- philippv enabled `-gdwarf-aranges` in fbcode {D4013485} (2016)
- `-gdwarf-aranges` is available in clang since https://reviews.llvm.org/D1649 (2013)

Reviewed By: philippv

Differential Revision: D14398382

fbshipit-source-id: 7b6b4e7ebf86268d8bc34089b0e77dcaa5badf92

folly/experimental/symbolizer/test/SymbolizerTest.cpp

@@ -34,15 +34,6 @@ TEST(Symbolizer, Single) {
   ASSERT_TRUE(symbolizer.symbolize(reinterpret_cast<uintptr_t>(foo), a));
   EXPECT_EQ("folly::symbolizer::test::foo()", a.demangledName());
 
-  // The version of clang we use doesn't generate a `.debug_aranges` section,
-  // which the symbolizer needs to lookup the filename.
-  constexpr bool built_with_clang =
-#ifdef __clang__
-      true;
-#else
-      false;
-#endif
-  if (!built_with_clang) {
   auto path = a.location.file.toString();
   folly::StringPiece basename(path);
   auto pos = basename.rfind('/');
@@ -50,7 +41,6 @@ TEST(Symbolizer, Single) {
     basename.advance(pos + 1);
   }
   EXPECT_EQ("SymbolizerTest.cpp", basename.str());
-  }
 }
 
 FrameArray<100>* framesToFill{nullptr};