Add a list of tokens that are always indexed

lib.py

@@ -169,6 +169,112 @@ def decode(byte_object):
     b'x'
 )
 
+# list of tokens, that are indexed as references even if no definitions are known
+
+always_indexed_tokens = [
+    b'_Alignas',
+    b'_Alignof',
+    b'_Atomic',
+    b'_BitInt',
+    b'_Bool',
+    b'_Complex',
+    b'_Imaginary',
+    b'_Float16',
+    b'_Float32',
+    b'_Float64',
+    b'_Float128',
+    b'_Float32x',
+    b'_Float64x',
+    b'_Float128x',
+    b'_Decimal32',
+    b'_Decimal64',
+    b'_Decimal128',
+    b'_Fract',
+    b'_Accum',
+    b'_Sat',
+    b'_Static_assert',
+    b'_Noreturn',
+    b'_Generic',
+    b'_Thread_local',
+    b'__FUNCTION__',
+    b'__PRETTY_FUNCTION__',
+    b'__alignof',
+    b'__alignof__',
+    b'__asm',
+    b'__asm__',
+    b'__attribute',
+    b'__attribute__',
+    b'__auto_type',
+    b'__builtin_addressof',
+    b'__builtin_assoc_barrier',
+    b'__builtin_bit_cast',
+    b'__builtin_call_with_static_chain',
+    b'__builtin_choose_expr',
+    b'__builtin_complex',
+    b'__builtin_convertvector',
+    b'__builtin_has_attribute',
+    b'__builtin_launder',
+    b'__builtin_shuffle',
+    b'__builtin_shufflevector',
+    b'__builtin_stdc_bit_ceil',
+    b'__builtin_stdc_bit_floor',
+    b'__builtin_stdc_bit_width',
+    b'__builtin_stdc_count_ones',
+    b'__builtin_stdc_count_zeros',
+    b'__builtin_stdc_first_leading_one',
+    b'__builtin_stdc_first_leading_zero',
+    b'__builtin_stdc_first_trailing_one',
+    b'__builtin_stdc_first_trailing_zero',
+    b'__builtin_stdc_has_single_bit',
+    b'__builtin_stdc_leading_ones',
+    b'__builtin_stdc_leading_zeros',
+    b'__builtin_stdc_trailing_ones',
+    b'__builtin_stdc_trailing_zeros',
+    b'__builtin_tgmath',
+    b'__builtin_offsetof',
+    b'__builtin_types_compatible_p',
+    b'__builtin_va_arg',
+    b'__complex',
+    b'__complex__',
+    b'__const',
+    b'__const__',
+    b'__constinit',
+    b'__decltype',
+    b'__extension__',
+    b'__func__',
+    b'__imag',
+    b'__imag__',
+    b'__inline',
+    b'__inline__',
+    b'__label__',
+    b'__null',
+    b'__real',
+    b'__real__',
+    b'__restrict',
+    b'__restrict__',
+    b'__signed',
+    b'__signed__',
+    b'__thread',
+    b'__transaction_atomic',
+    b'__transaction_relaxed',
+    b'__transaction_cancel',
+    b'__typeof',
+    b'__typeof__',
+    b'__typeof_unqual',
+    b'__typeof_unqual__',
+    b'__volatile',
+    b'__volatile__',
+    b'__GIMPLE',
+    b'__PHI',
+    b'__RTL',
+    b'alignas',
+    b'alignof',
+    b'asm',
+    b'auto',
+    b'thread_local',
+    b'sizeof',
+]
+
 def isIdent(bstr):
     if (len(bstr) < 2 or
         bstr in blacklist or

update.py

@@ -26,7 +26,7 @@
 from threading import Thread, Lock, Event, Condition
 
 import lib
-from lib import script, scriptLines
+from lib import script, scriptLines, always_indexed_tokens
 import data
 from data import PathList
 from find_compatible_dts import FindCompatibleDTS
@@ -315,11 +315,12 @@ def update_references(self, idxes):
                     if even:
                         tok = prefix + tok
 
-                        if (db.defs.exists(tok) and
-                            not ( (idx*idx_key_mod + line_num) in defs_idxes and
-                                defs_idxes[idx*idx_key_mod + line_num] == tok ) and
-                            (family != 'M' or tok.startswith(b'CONFIG_'))):
-                            # We only index CONFIG_??? in makefiles
+                        ref_allowed = db.defs.exists(tok) or (tok in always_indexed_tokens)
+                        # We only index CONFIG_??? in makefiles
+                        config_or_not_makefile = tok.startswith(b'CONFIG_') or family != 'M'
+                        i = idx*idx_key_mod + line_num
+
+                        if ref_allowed and defs_idxes.get(i) != tok and config_or_not_makefile:
                             if tok in idents:
                                 idents[tok] += ',' + str(line_num)
                             else: