core dump while resizing window about glslviewer HOT 9 CLOSED

#8: onViewportResize (_newWidth=0, _newHeight=0)
(gdb) frame 9
#9  0x0000000000431e85 in setWindowSize (_width=<optimized out>, 
    _height=<optimized out>) at src/app.cpp:419
419	    onViewportResize(viewport.z, viewport.w);
(gdb) print viewport
$1 = {{x = 0, r = 0, s = 0}, {y = 0, g = 0, t = 0}, {z = 0, b = 0, p = 0}, {
    w = 0, a = 0, q = 0}}
(gdb) frame 10
#10 0x0000000000432094 in <lambda(GLFWwindow*, int, int)>::operator() (
    __closure=0x0, _window=<optimized out>, _h=500, _w=607) at src/app.cpp:211
211	            setWindowSize(_w*devicePixelRatio,_h*devicePixelRatio);
(gdb) print devicePixelRatio
$2 = 0

float getPixelDensity() {
    #ifdef PLATFORM_RPI
        // RASPBERRYPI
        return 1.;
    #else
        // OSX/LINUX
        int window_width, window_height, framebuffer_width, framebuffer_height;
        glfwGetWindowSize(window, &window_width, &window_height);
        glfwGetFramebufferSize(window, &framebuffer_width, &framebuffer_height);
        std::cout << "getPixelDensity: "<<framebuffer_width<<"/"<<window_width<<"="<<(framebuffer_width/window_width)<<"\n";
        return framebuffer_width/window_width;
    #endif
}
getPixelDensity: 500/500=1
getPixelDensity: 510/510=1
getPixelDensity: 515/515=1
getPixelDensity: 515/515=1
getPixelDensity: 517/517=1
getPixelDensity: 517/517=1
getPixelDensity: 517/517=1
getPixelDensity: 521/521=1
getPixelDensity: 521/521=1
getPixelDensity: 525/525=1
getPixelDensity: 525/525=1
getPixelDensity: 531/531=1
getPixelDensity: 541/541=1
getPixelDensity: 554/554=1
getPixelDensity: 567/567=1
getPixelDensity: 602/602=1
getPixelDensity: 636/636=1
getPixelDensity: 645/645=1
getPixelDensity: 646/646=1
getPixelDensity: 643/643=1
getPixelDensity: 641/641=1
getPixelDensity: 638/638=1
getPixelDensity: 638/638=1
getPixelDensity: 635/635=1
getPixelDensity: 631/631=1
getPixelDensity: 628/628=1
getPixelDensity: 626/626=1
getPixelDensity: 626/626=1
getPixelDensity: 622/622=1
getPixelDensity: 609/609=1
getPixelDensity: 605/605=1
getPixelDensity: 601/601=1
getPixelDensity: 596/596=1
getPixelDensity: 591/591=1
getPixelDensity: 590/590=1
getPixelDensity: 589/589=1
getPixelDensity: 592/592=1
getPixelDensity: 593/593=1
getPixelDensity: 595/595=1
getPixelDensity: 597/597=1
getPixelDensity: 599/599=1
getPixelDensity: 603/603=1
getPixelDensity: 609/609=1
getPixelDensity: 614/614=1
getPixelDensity: 615/615=1
getPixelDensity: 617/617=1
getPixelDensity: 618/618=1
getPixelDensity: 622/622=1
getPixelDensity: 628/628=1
getPixelDensity: 633/633=1
getPixelDensity: 637/637=1
getPixelDensity: 638/638=1
getPixelDensity: 641/641=1
getPixelDensity: 645/645=1
getPixelDensity: 648/648=1
getPixelDensity: 653/653=1
getPixelDensity: 657/657=1
getPixelDensity: 658/658=1
getPixelDensity: 661/661=1
getPixelDensity: 670/670=1
getPixelDensity: 670/670=1
getPixelDensity: 672/672=1
getPixelDensity: 676/676=1
getPixelDensity: 677/677=1
getPixelDensity: 705/705=1
getPixelDensity: 705/705=1
getPixelDensity: 706/706=1
getPixelDensity: 708/708=1
getPixelDensity: 709/709=1
getPixelDensity: 710/710=1
getPixelDensity: 711/711=1
getPixelDensity: 714/714=1
getPixelDensity: 715/715=1
getPixelDensity: 716/716=1
getPixelDensity: 712/712=1
getPixelDensity: 709/709=1
getPixelDensity: 709/709=1
getPixelDensity: 709/709=1
getPixelDensity: 707/707=1
getPixelDensity: 699/704=0
glslViewer: include/glm/gtx/../gtc/matrix_transform.inl:236: glm::tmat4x4<T, (glm::precision)0u> glm::perspectiveRH(T, T, T, T) [with T = double]: Assertion `abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0)' failed.
Aborted (core dumped)

        window = glfwCreateWindow(_viewport.z, _viewport.w, appTitle.c_str(), NULL, NULL);

        if(!window) {
            glfwTerminate();
            std::cerr << "ABORT: GLFW create window failed" << std::endl;
            exit(-1);
        }

        devicePixelRatio = getPixelDensity();
        setWindowSize(_viewport.z*devicePixelRatio, _viewport.w*devicePixelRatio);

        glfwMakeContextCurrent(window);
        glfwSetWindowSizeCallback(window, [](GLFWwindow* _window, int _w, int _h) {
            devicePixelRatio = getPixelDensity();
            setWindowSize(_w*devicePixelRatio,_h*devicePixelRatio);
        });