Motiejus Jakštys 257236be4c astgen: fix ptrTypeExpr C-pointer allowzero error and source cursor save/restore ...

Add two fixes from audit of ptrTypeExpr against upstream AstGen.zig ptrType:

1. Reject `[*c]allowzero T` with a compile error matching upstream
   (AstGen.zig:3840-3842). C pointers always allow address zero, so
   the allowzero modifier is invalid on them.

2. Save source_offset/source_line/source_column before typeExpr and
   restore them before evaluating each trailing expression (sentinel,
   addrspace, align). This ensures correct debug info source locations
   matching upstream (AstGen.zig:3844-3846, 3859-3861, 3876-3878,
   3885-3887).

Issue 3 (addrspace RL using addBuiltinValue) is skipped as
addBuiltinValue is not yet implemented.

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

2026-02-13 22:25:39 +00:00

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