Segfault with MinGW

[zippy84]

I have compiled libvips in MinGW. When I try to run my program libvips crashes with a segfault. Gdb returns this backtrace:

#0  buffer_thread_free (buffer_thread=0x0) at buffer.c:176
#1  0x64b44982 in ?? ()
   from C:\Users\RR\Desktop\win_libs\xxx\libwinpthread-1.dll
#2  0x64b44d34 in ?? ()
   from C:\Users\RR\Desktop\win_libs\xxx\libwinpthread-1.dll
#3  0x75961287 in msvcrt!_itow_s () from C:\Windows\syswow64\msvcrt.dll
#4  0x75961328 in msvcrt!_endthreadex () from C:\Windows\syswow64\msvcrt.dll
#5  0x758033ca in KERNEL32!BaseThreadInitThunk ()
   from C:\Windows\syswow64\kernel32.dll
#6  0x77509ed2 in ntdll!RtlInitializeExceptionChain ()
   from C:\Windows\SysWOW64\ntdll.dll
#7  0x77509ea5 in ntdll!RtlInitializeExceptionChain ()
   from C:\Windows\SysWOW64\ntdll.dll
#8  0x00000000 in ?? ()

GCC is setup with:

$ gcc -v
Using built-in specs.
COLLECT_GCC=C:\msys64\mingw32\bin\gcc.exe
COLLECT_LTO_WRAPPER=C:/msys64/mingw32/bin/../lib/gcc/i686-w64-mingw32/5.3.0/lto-wrapper.exe
Target: i686-w64-mingw32
Configured with: ../gcc-5.3.0/configure --prefix=/mingw32 --with-local-prefix=/mingw32/local --build=i686-w64-mingw32 --host=i686-w64-mingw32 --target=i686-w64-mingw32 --with-native-system-header-dir=/mingw32/i686-w64-mingw32/include --libexecdir=/mingw32/lib --with-gxx-include-dir=/mingw32/include/c++/5.3.0 --enable-bootstrap --with-arch=i686 --with-tune=generic --enable-languages=c,lto,c++,objc,obj-c++,fortran,ada --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-time=yes --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-version-specific-runtime-libs --disable-isl-version-check --enable-lto --enable-libgomp --disable-multilib --enable-checking=release --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw32 --with-mpfr=/mingw32 --with-mpc=/mingw32 --with-isl=/mingw32 --with-pkgversion='Rev1, Built by MSYS2 project' --with-bugurl=http://sourceforge.net/projects/msys2 --with-gnu-as --with-gnu-ld --disable-sjlj-exceptions --with-dwarf2
Thread model: posix
gcc version 5.3.0 (Rev1, Built by MSYS2 project)

libvips itself is configured with: https://gist.github.com/zippy84/5b9068ec3608557dde42

Is this a known issue?

[jcupitt]

It should work. Try a tiny test program and see if you can compile, link and run that. For example:

http://www.vips.ecs.soton.ac.uk/index.php?title=Hello_World

I would use the pre-built Windows binary, unless you have a very good reason to build vips yourself.

When I cross-compile from linux, I build programs with something like:

i686-w64-mingw32-gcc \
    -mms-bitfields -march=i686 \
    -I/home/john/GIT/build-win32/7.32/inst/include \
    -I/home/john/GIT/build-win32/7.32/inst/include/glib-2.0 \
    -I/home/john/GIT/build-win32/7.32/inst/lib/glib-2.0/include \
    myprog.c \
    -L/home/john/GIT/build-win32/7.32/inst/lib \
    -lvips -lz -ljpeg -lstdc++ -lxml2 -lfftw3 -lm -lMagickWand -llcms2 \
    -lopenslide -lcfitsio -lpangoft2-1.0 -ltiff -lpng14 -lexif \
    -lMagickCore -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 \
    -lgmodule-2.0 -lgthread-2.0 -lglib-2.0 -lintl \
    -o myprog.exe

I don't know if that helps. pkg-config may help you set all these flags automatically, I don't know if msys supports it.

[jcupitt]

The pre-built vips binary should work with Visual Studio, that might be simpler. This is how vips works in node.js on Windows.

Though the C++ API will not work with MSVC sadly, you would have to rebuild that part.

[zippy84]

I have compiled GLib-2.4.6.2 for myself. This solved the problem.