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ludic/changes/reference-identity.md
Orkuncakilkaya 1900f9ca80 fix(compiler): == / != on references is identity; only text compares by content 
emit_bin_vals lowered every pointer-typed ==/!= to @lp_str_eq, so two
distinct records compared their bytes up to the first zero byte. Content
compare now needs both sides to be text (string, or the untyped
pointer/ptr runtime code carries text in); other references use
icmp eq ptr, and string vs a non-text reference is a compile error.
Adds selfhost/tests/identity.ludic; both seeds regenerated.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-16 16:13:31 +03:00

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bump: patch type: fix == / != on records is identity again — only two strings compare by content.

Every pointer-typed comparison used to be lowered to a C-string content compare, so two distinct records (properties, slices, enums) compared their bytes up to the first zero byte: a == b could be true for different objects that shared a leading field, depending on layout. References now compare by identity (icmp eq ptr); string (and untyped pointer/pointers text) still compares by content, and comparing a string with a non-string reference is a compile error.