Added c_fixed_enum as an extension. Cleaned up enum.c

Author: Aidan

clang/include/clang/Basic/Features.def

@@ -131,7 +131,6 @@ FEATURE(objc_arc_fields, true)
 FEATURE(objc_arc_weak, LangOpts.ObjCWeak)
 FEATURE(objc_default_synthesize_properties, LangOpts.ObjC)
 FEATURE(objc_fixed_enum, LangOpts.ObjC)
-FEATURE(c_fixed_enum, true)
 FEATURE(objc_instancetype, LangOpts.ObjC)
 FEATURE(objc_kindof, LangOpts.ObjC)
 FEATURE(objc_modules, LangOpts.ObjC && LangOpts.Modules)
@@ -309,6 +308,10 @@ EXTENSION(datasizeof, LangOpts.CPlusPlus)
 
 FEATURE(cxx_abi_relative_vtable, LangOpts.CPlusPlus && LangOpts.RelativeCXXABIVTables)
 
+//Fixed enum feature and extension, to be relocated in this file
+FEATURE(c_fixed_enum, true)    
+EXTENSION(c_fixed_enum, true)  
+
 // CUDA/HIP Features
 FEATURE(cuda_noinline_keyword, LangOpts.CUDA)
 EXTENSION(cuda_implicit_host_device_templates, LangOpts.CUDA && LangOpts.OffloadImplicitHostDeviceTemplates)

clang/test/Sema/enum.c

@@ -185,7 +185,6 @@ enum IncOverflow {
   V3 // pre-c23-warning {{incremented enumerator value which exceeds the range of 'int' is a C23 extension}}
 };
 
-
 #if __STDC_VERSION__ >= 202311L
 // FIXME: GCC picks __uint128_t as the underlying type for the enumeration
 // value and Clang picks unsigned long long.