[ASDAlexander77]

Problem

A sign-neutral integer (i8 … i64) lost its sign:

Code	Result before
let a: i32 = -1; print(a)	4294967295, although a converts to number as -1
let b: i8 = -5	prints 251
let c: i64 = -7	holds 4294967289: the s32 literal was zero-extended
let d: i16 = -300; d < 0	false: d was widened with zeros and compared as 65236

A widening cast sign-extended only when both sides were signed integers. Otherwise it fell through to the zero-extension in castLLVMTypesLogic, which sees only the signless LLVM types.

Fix

In CastLogicHelper.h:

• Widening follows the source: a signed or sign-neutral integer sign-extends, to any wider integer or to index. Only an unsigned one zero-extends. This replaces the two narrower sign-extension cases, signed→signed and signed→index.
• Printing: a sign-neutral integer prints signed, matching how it already compares and converts to number. uN still prints unsigned.

Tests

• New 00signless_int_signed.ts, run as compile and jit. It covers i8, i16, i32 and i64 printing and comparing, i32 → index, i32 in any, and that unsigned sources still widen with zeros. It passes under gc, rc and none.
• Release suite: 3349/3349.
• DefaultLib rebuilt with this compiler (release gc): 159/159 compiled and 159/159 under JIT.
• Not run: Debug builds, x86, -mm=own.

🤖 Generated with Claude Code