FPC bootstrap no longer compiles compiler source

• Type: bug (Track A / bootstrap hygiene)
• Status: done
• Owner: —
• Found / Opened: 2026-06-27, while validating an unrelated C entry fix.

Symptom

make bootstrap fails when the system FPC compiler compiles compiler/compiler.pas.

Observed command:

make bootstrap

First hard errors observed:

symtab.inc(979,27) Error: Identifier not found "TypeSize"
parser.inc(14065,5) Fatal: Syntax error, ";" expected but "IF" found

The normal self-host path still fixed-points byte-identically:

make compiler/pascal26
cmp /tmp/pascal26-build /tmp/pascal26-verify

Likely Cause

At least two source constructs are accepted by the self-hosted compiler but not by FPC 3.2.2:

• compiler/symtab.inc calls TypeSize before FPC has seen a declaration for it.
• compiler/parser.inc has an end before another statement without the semicolon FPC requires.

Acceptance

• make bootstrap succeeds from the checked-in source with FPC 3.2.2.
• The self-host fixedpoint remains byte-identical after the cleanup.
• Add or keep a gate that catches accidental FPC-incompatible compiler-source edits when bootstrap hygiene matters.

Resolution

• 2026-06-27 - DUP of [[bug-fpc-seed-helper-ordering-after-lua-c-frontend]] (filed same day, same two root errors: TypeSize forward + missing ; in CompilePendingGlobalInits). Fixed there in commit 3263ec1f: forwards.inc (FPC-gated) + two statement separators. make bootstrap green end-to-end; self-host byte-identical. The "add a gate" acceptance item → [[feature-require-forward-strict-mode]] (the --strict umbrella).