[Git][wine/wine][master] vbscript: Parse double literals via ucrtbase _wcstod_l.

[Alexandre Julliard (＠julliard)]

Alexandre Julliard pushed to branch master at wine / wine


Commits:
9e2c4771 by Francis De Brabandere at 2026-05-20T18:48:20+02:00
vbscript: Parse double literals via ucrtbase _wcstod_l.

The custom pow()-based real-number conversion was historical: when this
code was written, wine could not link against ucrtbase, so the lexer
reimplemented the conversion. That constraint is gone, and the custom
code had two correctness gaps - subnormal literals (e.g. 1e-309) rounded
to zero because pow(10, 309) overflows to infinity, and values near
DBL_MAX could round through the same infinity edge.

Hand the literal span to _wcstod_l with a C locale instead, which
handles rounding, subnormals, and overflow per IEEE 754 - and is
locale-invariant by construction, matching VBScript source semantics
where the decimal separator is always '.' regardless of runtime
SetLocale.

Above-DBL_MAX literals (1e309, 1.8e308) continue to raise err 1031 as
before.

- - - - -


4 changed files:

- dlls/vbscript/lex.c
- dlls/vbscript/tests/lang.vbs
- dlls/vbscript/vbscript.h
- dlls/vbscript/vbscript_main.c


View it on GitLab: https://gitlab.winehq.org/wine/wine/-/commit/9e2c47715a224ab08b35a056caa2f40...

-- 
View it on GitLab: https://gitlab.winehq.org/wine/wine/-/commit/9e2c47715a224ab08b35a056caa2f40...
You're receiving this email because of your account on gitlab.winehq.org. Manage all notifications: https://gitlab.winehq.org/-/profile/notifications | Help: https://gitlab.winehq.org/help