[Development] MSVC not inlining QRect inline functions (anymore?)

[Mårten Nordheim]

Testing this with the inline debugging things from MSVC it is simply listing the reason for not inlining as 'dllimport check failed'.
So it seems to not inline solely based on it being marked dllimport.

Could we perhaps make some of these functions export-only? Just remove the dllimport side of things, only export the symbol.

Mårten

________________________________________
From: Development <development-bounces at qt-project.org> on behalf of Philippe <philwave at gmail.com>
Sent: Monday, June 8, 2026 16:05
To: development at qt-project.org
Subject: Re: [Development] MSVC not inlining QRect inline functions (anymore?)

I have just verified that not only QRect, but QPoint, QSize and QMargins are
also affected :(

QCheckedInt overflow checks only manifest as assertions in debug builds.
Yet, this debug-only feature has a negative impact on the MSVC release
version :(
Not exactly, "Pay Only For What You Use"...

Philippe

On Sun, 7 Jun 2026 17:48:33 +0200
Christian Ehrlicher via Development <development at qt-project.org> wrote:

> Hi,
>
> I recently found out that none of the QRect inline functions are inlined by msvc no matter what compiler options I pass. Tested with recent cl (19.51.36244) but also saw this with older msvc2022 compilers.
> Is this known and should/can we do something against this?
>
>
> Christian
> -- Development mailing list
> Development at qt-project.org
> https://lists.qt-project.org/listinfo/development


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