Hi, periodically my WebAssembly (Wasm) crashes with this error: "Uncaught
RuntimeError: unaligned memory access." As far as I understand, Wasm can
perform unaligned memory access. So why am I encountering this error?
Linker flags:
"-sUSE_SDL=2" "-sUSE_SDL_IMAGE=2" "-sUSE_SDL_MIXER=2" "-sUSE_SDL_TTF=2"
"-sUSE_ZLIB=1"
"-sSDL2_IMAGE_FORMATS=['bmp']"
"-sSTACK_SIZE=1Mb"
"-sTOTAL_MEMORY=512Mb"
"-sALLOW_MEMORY_GROWTH=0"
"-sPTHREAD_POOL_SIZE=6"
"-sPTHREAD_POOL_SIZE_STRICT=0"
"-sFORCE_FILESYSTEM=1"
"-sEXPORT_NAME=VCMI"
"-sMODULARIZE=1"
"-sINVOKE_RUN=0"
"-sEXPORTED_RUNTIME_METHODS=['addRunDependency', 'removeRunDependency',
'FS', \
'lengthBytesUTF8', 'stringToUTF8', 'UTF8ToString', 'callMain', 'run']"
"-sEXPORTED_FUNCTIONS=['_main', '_malloc', '_free']"
"-pthread"
"-fwasm-exceptions"
"-sMALLOC=mimalloc"
"-Oz"
# for debugging
# "-O1"
"--profiling-funcs"
# "-sASSERTIONS=2"
Full error stack (not very useful):
Uncaught RuntimeError: unaligned memory access
callUserCallback https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
runIter https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
requestAnimationFrame
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_scheduler_rAF
https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
MainLoop_runner https://vcmi.dos.zone/launcher/vcmi/vcmiclient.js:9
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