Playground SIGSEV on Windows

On Windows, commit 86179840, for any playground: some warnings then SIGSEV

warning: Vertex shader for simpleShaderProg (MainVertexShader & PositionOnlyVertexShader) failed to compi        le
warning: Fragment shader for simpleShaderProg (MainFragmentShader & ShockingPinkSrcFragmentShader) failed         to compile
warning: QGLShaderProgram: shader programs are not supported
warning: Errors linking simple shader:
warning: Vertex shader for blitShaderProg (MainWithTexCoordsVertexShader & UntransformedPositionVertexSha        der) failed to compile
warning: Fragment shader for blitShaderProg (MainFragmentShader & ImageSrcFragmentShader) failed to compi        le
warning: QGLShaderProgram: shader programs are not supported
warning: Errors linking blit shader:

Thread 1 received signal SIGSEGV, Segmentation fault.
0x00000000 in ?? ()