[Bug 55311] New: tools/widl/write_msft.c:1512:33: runtime error: left shift of negative value -1 (UndefinedBehaviorSanitizer)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55311

Bug ID: 55311
           Summary: tools/widl/write_msft.c:1512:33: runtime error: left
                    shift of negative value -1
                    (UndefinedBehaviorSanitizer)
           Product: Wine
           Version: 8.13
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Keywords: download, source
          Severity: normal
          Priority: P2
         Component: tools
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: Debian

For this issue, just recompiling tools/widl is enough to see the issue:
./configure && make -j12
cd tools/widl
make clean
make CFLAGS="-fsanitize=undefined" LDFLAGS="-fsanitize=undefined"

tools/widl/widl -o dlls/dhtmled.ocx/i386-windows/dhtmled_tlb_t.res -b
i686-w64-mingw32 --nostdinc -Ldlls/* -Idlls/dhtmled.ocx -Iinclude \
  -Iinclude/msvcrt -D_UCRT -D__WINESRC__ dlls/dhtmled.ocx/dhtmled_tlb.idl
tools/widl/write_msft.c:1512:33: runtime error: left shift of negative value -1

There are a total of 5 occurrences:
tools/widl/widl -o dlls/dhtmled.ocx/i386-windows/dhtmled_tlb_t.res -b
i686-w64-mingw32 --nostdinc -Ldlls/* -Idlls/dhtmled.ocx -Iinclude \
  -Iinclude/msvcrt -D_UCRT -D__WINESRC__ dlls/dhtmled.ocx/dhtmled_tlb.idl
tools/widl/widl -o dlls/mshtml.tlb/i386-windows/mshtml_tlb_t.res -b
i686-w64-mingw32 --nostdinc -Ldlls/* -Idlls/mshtml.tlb -Iinclude \
  -Iinclude/msvcrt -D_UCRT -D__WINESRC__ dlls/mshtml.tlb/mshtml_tlb.idl
tools/widl/widl -o dlls/msscript.ocx/i386-windows/msscript_t.res -b
i686-w64-mingw32 --nostdinc -Ldlls/* -Idlls/msscript.ocx -Iinclude \
  -Iinclude/msvcrt -D_UCRT -D__WINESRC__ dlls/msscript.ocx/msscript.idl
tools/widl/widl -o programs/cscript/i386-windows/ihost_l.res -b
i686-w64-mingw32 --nostdinc -Ldlls/* -Iprograms/cscript \
  -Iprograms/wscript -Iinclude -Iinclude/msvcrt -D_UCRT -D__WINESRC__
-DCSCRIPT_BUILD \
  programs/wscript/ihost.idl
tools/widl/widl -o programs/wscript/i386-windows/ihost_l.res -b
i686-w64-mingw32 --nostdinc -Ldlls/* -Iprograms/wscript -Iinclude \
  -Iinclude/msvcrt -D_UCRT -D__WINESRC__ programs/wscript/ihost.idl