Motiejus Jakštys bf200f7ef9 Add structural AST consistency check to parser tests ...

Compare the C parser's AST against Zig's std.zig.Ast.parse() output in
every testParse call. This catches structural mismatches (tokens, nodes,
extra_data) without needing a separate corpus.

Also fix two C parser bugs found by the new check:
- Empty anonymous init `.{}` now uses struct_init_dot_two (not
  array_init_dot_two), matching the Zig parser.
- for-type-expr with single input and no else now emits for_simple
  (not for with extra_data), matching the Zig parser's parseFor.

Skip the check under valgrind since Zig's tokenizer uses AVX-512.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-11 23:58:18 +02:00

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