qt5.21 minwg error:panic: invalid memory address or nil pointer dereference

[raiscui]

env:

F:\baiduyun\backup\gopath\src\gopkg.in\v0\qml\examples\customtype>go env
set GOARCH=386
set GOBIN=
set GOCHAR=8
set GOEXE=.exe
set GOHOSTARCH=386
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=F:\baiduyun\backup\gopath
set GORACE=
set GOROOT=C:\Go
set GOTOOLDIR=C:\Go\pkg\tool\windows_386
set TERM=dumb
set CC=gcc
set GOGCCFLAGS=-g -O2 -m32 -mthreads
set CXX=g++
set CGO_ENABLED=1

error for all examples:

F:\baiduyun\backup\gopath\src\gopkg.in\v0\qml\examples\customtype>go run customt
ype.go
panic: invalid memory address or nil pointer dereference
fatal error: panic during malloc
[signal 0xc0000005 code=0x0 addr=0x20 pc=0x41b8ea]

runtime stack:
runtime.panic(0x4f17c0, 0x66c56f)
C:/Users/ADMINI~1/AppData/Local/Temp/2/makerelease529514319/go/src/pkg/r
untime/panic.c:233 +0x2b
runtime: unexpected return pc for runtime.sigpanic called from 0x749af4fc

goroutine 4 [syscall]:
runtime.cgocall(0x48b47b, 0x3d57c4)
C:/Users/ADMINI1/AppData/Local/Temp/2/makerelease529514319/go/src/pkg/r
untime/cgocall.c:149 +0x10c fp=0x3d57b8
gopkg.in/v0/qml._Cfunc_idleTimerInit(0x674090)
C:/Users/ADMINI1/AppData/Local/Temp/go-build364249083/gopkg.in/v0/qml/_
obj/_cgo_defun.c:229 +0x33 fp=0x3d57c4
gopkg.in/v0/qml.guiLoop()
F:/baiduyun/backup/gopath/src/gopkg.in/v0/qml/bridge.go:38 +0x41 fp=0x3d
57cc
runtime.goexit()
C:/Users/ADMINI~1/AppData/Local/Temp/2/makerelease529514319/go/src/pkg/r
untime/proc.c:1394 fp=0x3d57d0
created by gopkg.in/v0/qml.Init
F:/baiduyun/backup/gopath/src/gopkg.in/v0/qml/qml.go:44 +0x8c

goroutine 1 [semacquire]:
sync.runtime_Semacquire(0x6740cc)
C:/Users/ADMINI1/AppData/Local/Temp/2/makerelease529514319/go/src/pkg/r
untime/sema.goc:199 +0x33
sync.(*Mutex).Lock(0x6740c8)
C:/Users/ADMINI1/AppData/Local/Temp/2/makerelease529514319/go/src/pkg/s
ync/mutex.go:66 +0xcd
gopkg.in/v0/qml.Init(0x0)
F:/baiduyun/backup/gopath/src/gopkg.in/v0/qml/qml.go:45 +0x9c
main.run(0x1, 0xffffffff)
F:/baiduyun/backup/gopath/src/gopkg.in/v0/qml/examples/customtype/custom
type.go:30 +0x2a
main.main()
F:/baiduyun/backup/gopath/src/gopkg.in/v0/qml/examples/customtype/custom
type.go:10 +0x20

goroutine 3 [syscall]:
runtime.goexit()
C:/Users/ADMINI~1/AppData/Local/Temp/2/makerelease529514319/go/src/pkg/r
untime/proc.c:1394
exit status 2

F:\baiduyun\backup\gopath\src\gopkg.in\v0\qml\examples\customtype>

[raiscui]

GCC env:

F:\baiduyun\backup\gopath\src\gopkg.in\v0\qml\examples\customtype>gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=c:/qt/qt5.2.1/tools/mingw48_32/bin/../libexec/gcc/i686-w64-m
ingw32/4.8.0/lto-wrapper.exe
Target: i686-w64-mingw32
Configured with: ../../../src/gcc-4.8.0/configure --host=i686-w64-mingw32 --buil
d=i686-w64-mingw32 --target=i686-w64-mingw32 --prefix=/mingw32 --with-sysroot=/t
emp/x32-480-posix-dwarf-r2/mingw32 --enable-shared --enable-static --disable-mul
tilib --enable-languages=c,c++,fortran,lto --enable-libstdcxx-time=yes --enable-
threads=posix --enable-libgomp --enable-lto --enable-graphite --enable-checking=
release --enable-fully-dynamic-string --enable-version-specific-runtime-libs --d
isable-sjlj-exceptions --with-dwarf2 --disable-isl-version-check --disable-cloog
-version-check --disable-libstdcxx-pch --disable-libstdcxx-debug --disable-boots
trap --disable-rpath --disable-win32-registry --disable-nls --disable-werror --d
isable-symvers --with-gnu-as --with-gnu-ld --with-arch=i686 --with-tune=generic
--with-host-libstdcxx='-static -lstdc++' --with-libiconv --with-system-zlib --wi
th-gmp=/temp/mingw-prereq/i686-w64-mingw32-static --with-mpfr=/temp/mingw-prereq
/i686-w64-mingw32-static --with-mpc=/temp/mingw-prereq/i686-w64-mingw32-static -
-with-isl=/temp/mingw-prereq/i686-w64-mingw32-static --with-cloog=/temp/mingw-pr
ereq/i686-w64-mingw32-static --enable-cloog-backend=isl --with-pkgversion='rev2,
Built by MinGW-builds project' --with-bugurl=http://sourceforge.net/projects/mi
ngwbuilds/ CFLAGS='-O2 -pipe -I/temp/x32-480-posix-dwarf-r2/libs/include -I/temp
/mingw-prereq/x32-zlib/include -I/temp/mingw-prereq/i686-w64-mingw32-static/incl
ude' CXXFLAGS='-O2 -pipe -I/temp/x32-480-posix-dwarf-r2/libs/include -I/temp/min
gw-prereq/x32-zlib/include -I/temp/mingw-prereq/i686-w64-mingw32-static/include'
CPPFLAGS= LDFLAGS='-pipe -L/temp/x32-480-posix-dwarf-r2/libs/lib -L/temp/mingw-
prereq/x32-zlib/lib -L/temp/mingw-prereq/i686-w64-mingw32-static/lib -L/temp/x32
-480-posix-dwarf-r2/mingw32/opt/lib'
Thread model: posix
gcc version 4.8.0 (rev2, Built by MinGW-builds project)

[niemeyer]

Thanks for the report.

This looks like a dup from #19, which is now fixed.