Proposals / #1373

Recover the paired bounded wide-append helper's pointer contract

checked · by eejitgames · submitted 2026-11-06

Both complete native UNICODE_AppendWideStringN bodies return the original destination pointer in EAX on every normal path; Windows declares void and Mac declares undefined. Recover a destination-pointer result in both builds. Mac's source is incorrectly int and its destination is short*: use existing WCHAR* for both wide-text inputs. Preserve all names, integer count types, arities and fastcall/cdecl conventions; Windows's existing uint16_t* inputs stay as they are. These functions are separate from pending1362's unbounded copy/append inputs and1370's bounded copy.

Changes 2, applied together

1. Set prototype win 0x00526740

   signaturevoid UNICODE_AppendWideStringN(uint16_t * pwszDst, uint16_t * pwszSrc, int32_t nMaxChars)→uint16_t * UNICODE_AppendWideStringN(uint16_t * pwszDst, uint16_t * pwszSrc, int32_t nMaxChars)
   convention__fastcall

2. Set prototype mac 0x002ba070

   signatureundefined UNICODE_AppendWideStringN(short * wszDest, int wszSrc, int nMaxChars)→WCHAR * UNICODE_AppendWideStringN(WCHAR * wszDest, WCHAR * wszSrc, int nMaxChars)
   convention__cdecl