[Bug 36511] New: widl fails to build with clang -fsanitize=undefined

https://bugs.winehq.org/show_bug.cgi?id=36511

Bug ID: 36511
           Summary: widl fails to build with clang -fsanitize=undefined
           Product: Wine
           Version: 1.7.19
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, source
          Severity: normal
          Priority: P2
         Component: tools
          Assignee: [e-mail]
          Reporter: [e-mail]

make[1]: Entering directory `/home/austin/src/wine-clang/tools/widl'
clang -fsanitize=undefined -m32 -g -O2 -o widl client.o expr.o hash.o header.o
proxy.o register.o server.o typegen.o typelib.o typetree.o utils.o widl.o
write_msft.o parser.tab.o parser.yy.o ../../libs/wpp/libwpp.a
../../libs/port/libwine_port.a 
../../libs/wpp/libwpp.a(ppy.tab.o): In function `ppy_parse':
/home/austin/src/wine-clang/libs/wpp/ppy.y:397: undefined reference to
`__mulodi4'
/home/austin/src/wine-clang/libs/wpp/ppy.y:397: undefined reference to
`__mulodi4'
/home/austin/src/wine-clang/libs/wpp/ppy.y:397: undefined reference to
`__mulodi4'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [widl] Error 1
make[1]: Leaving directory `/home/austin/src/wine-clang/tools/widl'
make: *** [tools/widl] Error 2

[Bug 36511] widl fails to build with clang -fsanitize=undefined

https://bugs.winehq.org/show_bug.cgi?id=36511

--- Comment #1 from Austin English  ---
This is with clang 3.4. I see that 1.7.17 (mostly) worked with clang 3.3 in bug
36079. I tried building 1.7.17 with 3.4, but it fails the same as here, in
widl.

I'll try bisecting clang if time permits, but presumably it's an improvement in
its undefined behavior detection.

[Bug 36511] widl fails to build with clang -fsanitize=undefined

https://bugs.winehq.org/show_bug.cgi?id=36511

--- Comment #2 from Austin English  ---
Compiling llvm/clang 3.3 from source with gcc 4.8.2 on fedora 20, I get the
same widl failure. I'm not sure what's responsible for the regression :/.

[Bug 36511] widl fails to build with clang -fsanitize=undefined

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=36511

Fabian Maurer  changed:

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

--- Comment #3 from Fabian Maurer  ---
Works for me using wine-8.10. is this still relevant?

[Bug 36511] widl fails to build with clang -fsanitize=undefined

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=36511

--- Comment #4 from Austin English  ---
(In reply to Fabian Maurer from comment #3)
> Works for me using wine-8.10. is this still relevant?

What compiler are you using?

Testing on a cfarm node (gcc186), it works for me with gcc (gcc (Debian
10.2.1-6) 10.2.1 20210110), but not clang (9/11/13) using
wine-8.12-136-g94d61d1b280.

Side note: with gcc, it later fails in ntdll, do you see that as well?

[Bug 36511] widl fails to build with clang -fsanitize=undefined

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=36511

--- Comment #5 from Fabian Maurer  ---
Created attachment 74861
  --> https://bugs.winehq.org/attachment.cgi?id=74861
Log using clang 15.0.7-9

I'm on Arch, using clang 15.0.7-9.

Not sure what exactly is different now, but I now get various errors...

[Bug 36511] widl fails to build with clang -fsanitize=undefined

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=36511

--- Comment #6 from Fabian Maurer  ---
> Side note: with gcc, it later fails in ntdll, do you see that as well?

Using gcc  13.1.1 20230429
export ALLFLAGS="-g -O0 -fcommon -fsanitize=undefined"
with --without-mingw

I get basically the same errors.