The question is how can I pause debugger inside the JS code of emscripten_webgl_create_context? I don't necessarily need to pass every step of the way, just to pause in emscripten_webgl_do_create_context or __findCanvasEventTarget.
On Fri, 20 Sep 2019 at 19:39, Alon Zakai <alonza...@gmail.com> wrote: > Not sure I understood the question here (stepping into a function that > isn't emitted?). But in general, building with -g (instead of -g0) might > help debugging. > > On Thu, Sep 19, 2019 at 3:55 AM שחר לנגבהיים <niho...@gmail.com> > wrote: > >> Hi, >> I'm trying to debug an issue I have, where emscripten_webgl_create_context >> fails to find a second canvas. >> The issue happens even when I checked that the canvas can be found using >> document.querySelector in the calling JS. >> In order to debug this, I'd like to step into the library_html5.js code >> and see what's happening there, but AFAIS, library_html5.js isn't >> explicitly packaged into the resulting JS code. Is there a way to step into >> the code using a debugger? >> >> Alternatively, can anyone explain why this might happen? It happens only >> when I build using -Os or -Oz, not -O3. This is the compilation call: >> >> em++ -std=c++17 -o ./bin/appWASM.js \ ./src/*/*.cpp >> ./build-wasm/srcDerivedFiles/*.cpp ./build-wasm/*.a \ -g0 -Oz \ -s >> LEGACY_GL_EMULATION=0 \ -s ALLOW_MEMORY_GROWTH=1 \ -s USE_WEBGL2=0 \ -s >> WASM=1 \ -s NO_EXIT_RUNTIME=1 \ -s EXPORTED_FUNCTIONS='["_main"]' \ -s >> ERROR_ON_UNDEFINED_SYMBOLS=1 \ -s USE_LIBPNG=1 \ -s USE_FREETYPE=1 \ -s >> DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=1 \ -s ASSERTIONS=1 \ -s >> OFFSCREENCANVAS_SUPPORT=0 \ -s USE_PTHREADS=0 \ --bind >> >> -- >> You received this message because you are subscribed to the Google Groups >> "emscripten-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to emscripten-discuss+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/emscripten-discuss/003e6e31-cb64-48b8-a8a6-9b43695ea863%40googlegroups.com >> <https://groups.google.com/d/msgid/emscripten-discuss/003e6e31-cb64-48b8-a8a6-9b43695ea863%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to emscripten-discuss+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/emscripten-discuss/CAEX4NpTJTwbUEd-b2faigCGAaGhudRsL5%2BS6MnL8uNB7%3DijqUw%40mail.gmail.com > <https://groups.google.com/d/msgid/emscripten-discuss/CAEX4NpTJTwbUEd-b2faigCGAaGhudRsL5%2BS6MnL8uNB7%3DijqUw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to emscripten-discuss+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/CA%2B_KjGbRNnOWcK0ozvuV%2BgxamFRPaJfyn6mif%2BvyS0LmZxBMwA%40mail.gmail.com.
