[Bug 58191] New: dwrite tests fail to compile with mingw-gcc 15 due to attempt to link to truncf

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58191

Bug ID: 58191
           Summary: dwrite tests fail to compile with mingw-gcc 15 due to
                    attempt to link to truncf
           Product: Wine
           Version: 10.6
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: dwrite
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Since my system updated mingw to gcc 15.1, Wine fails to build:

/usr/libexec/gcc/x86_64-w64-mingw32/ld:
dlls/dwrite/tests/x86_64-windows/layout.o: in function `test_pixelsnapping':
/home/stefan/build/_wine64/../../src/wine/dlls/dwrite/tests/layout.c:4782:(.text$test_pixelsnapping+0x312):
undefined reference to `truncf'

$ x86_64-w64-mingw32-gcc --version
x86_64-w64-mingw32-gcc (Gentoo 15.1.0 p55) 15.1.0

Windows 11's msvcrt.dll indeed does not export trunc(), truncf() or truncl(),
although ucrtbase.dll does. So adding the exports to our msvcrt would fix the
build but break running the tests on Windows.

The line in question doesn't call truncf. It calls floor(), which newer gcc
apparently lowers to truncf. Building the file in question with -O0 of
-fno-builtin-floor fixes the problem.

[Bug 58191] dwrite tests fail to compile with mingw-gcc 15 due to attempt to link to truncf

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58191

Zeckma  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #1 from Zeckma  ---
I have been doing testing with GCC-15 and I can confirm the same errors.

[Bug 58191] dwrite tests fail to compile with mingw-gcc 15 due to attempt to link to truncf

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58191

--- Comment #2 from Zeckma  ---
Should also be said that if those who are reading this thread want to compile
Wine right now and don't care about regression tests, passing --disable-tests
to ./configure also gets around the issue.

[Bug 58191] dwrite tests fail to compile with mingw-gcc 15 due to attempt to link to truncf

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58191

Stefan Dösinger  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
      Fixed by SHA1|                            |ed66bd5c97ecc17c42a4942dafa
                   |                            |c7d406c1e5120
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from Stefan Dösinger  ---
This should be fixed by commit ed66bd5c97ecc17c42a4942dafac7d406c1e5120.

[Bug 58191] dwrite tests fail to compile with mingw-gcc 15 due to attempt to link to truncf

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58191

Alexandre Julliard  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #4 from Alexandre Julliard  ---
Closing bugs fixed in 10.8.