Demo App crashes on downloading offline regions

[mariusvn]

In the demo app, when i download an offline region i get a SIGSEGV

E/libc++abi(24378): terminating with uncaught exception of type std::__ndk1::regex_error: The expression contained an invalid range in a {} expression.
F/libc    (24378): Fatal signal 6 (SIGABRT), code -6 (SI_TKILL) in tid 24587 (DatabaseFileSou), pid 24378 (mapboxglexample)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'HUAWEI/CMR-W09/HWCMR09:9/HUAWEICMR-W09/9.1.0.335C432:user/release-keys'
Revision: '0'
ABI: 'arm64'
Happend: 'Thu Dec 22 11:10:35 2022
'
SYSVMTYPE: Art
APPVMTYPE: Art
pid: 24378, tid: 24587, name: DatabaseFileSou  >>> com.mapbox.mapboxglexample <<<
signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
Abort message: 'terminating with uncaught exception of type std::__ndk1::regex_error: The expression contained an invalid range in a {} expression.'
    x0  0000000000000000  x1  000000000000600b  x2  0000000000000006  x3  0000000000000008
    x4  fefeff79ff2d6d6e  x5  fefeff79ff2d6d6e  x6  fefeff79ff2d6d6e  x7  7f7f7f7f7f7f7f7f
    x8  0000000000000083  x9  d56d183b142ee75a  x10 0000000000000000  x11 fffffffc7ffffbdf
    x12 0000000000000001  x13 0000000063a42d1a  x14 000e34d3673516e7  x15 00000716c75550b0
    x16 0000007db68b32c0  x17 0000007db67f233c  x18 0000000000000001  x19 0000000000005f3a
    x20 000000000000600b  x21 0000007bf377e338  x22 ffffff80ffffffc8  x23 0000007bf377e3f0
    x24 0000007bf377e2d0  x25 0000007bf377e310  x26 0000007bf377ebb8  x27 0000000000000018
    x28 0000007bf377eba0  x29 0000007bf377e240
    sp  0000007bf377e200  lr  0000007db67e6e68  pc  0000007db67e6e90
backtrace:
    #00 pc 0000000000022e90  /system/lib64/libc.so (abort+116)
    #01 pc 00000000002fc2a4  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #02 pc 00000000002fc3fc  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #03 pc 00000000002f99d4  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #04 pc 00000000002f9000  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #05 pc 00000000002f8f5c  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so (__cxa_throw+112)
    #06 pc 000000000019886c  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #07 pc 000000000019869c  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #08 pc 000000000019b0a8  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #09 pc 0000000000197d54  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #10 pc 0000000000197a1c  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #11 pc 0000000000197134  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #12 pc 000000000021fc94  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #13 pc 000000000021f760  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #14 pc 00000000001b289c  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #15 pc 00000000000ea37c  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #16 pc 00000000001af24c  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #17 pc 00000000001af360  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #18 pc 00000000001aed94  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #19 pc 00000000002178f0  /data/app/com.mapbox.mapboxglexample-pl4b2eQuS_tcz18flpT5kg==/lib/arm64/libmapbox-gl.so
    #20 pc 0000000000083a6c  /system/lib64/libc.so (__pthread_start(void*)+36)
    #21 pc 00000000000246e4  /system/lib64/libc.so (__start_thread+68)

[mariusvn]

related to maplibre/maplibre-native#177

[noorbakerally]

@mariusvn Did you have any success in resolving this issue?

[mariusvn]

Nope, i think it's related to the jni in the main Maplibre GL native lib for Android (the cpp doing an ram access to a wrong address, causing a sigsegv) but I don't really have the knowledge to fix it.

[mariusvn]

there is apparently a workaround that just came up, not tested it but it looks like its moving flutter-mapbox-gl/maps#1119 (comment) It is still only on mapbox and not maplibre tho.

[BartoszStasiurka]

@mariusvn I've tried to implement these changes here: https://github.com/BartoszStasiurka/flutter-maplibre-gl/tree/flutter3-fix
but unfortunately it doesn't work. I mean it still crash.

[mariusvn]

I may have made a mistake: there is two crash cases currently in flutter-maplibre:

• The one that happen when you download tiles
• The one that happen when you dispose the map (its not happening everytime)

I think it is a fix to the second case but i cannot be sure since i didnt tested

Thanks for the try, i'll take a look deeper if i have time

[mariusvn]

i was talking about this comment #182 (comment) @BartoszStasiurka

[m0nac0]

@mariusvn This has been reported before in #39. We didn't find the core issue, but it only happened in the demo app, not in production apps, so I closed it. Someone also commented that it might be relevant to the tile limit (#39 (comment)). Can you test if the crash also happens in your app (without the demo-style from the demo app) and with less tiles?

[m0nac0]

For further reference: the issue with the demo style seems to be that the tiles are hosted on Github Pages. It should work with regular tileservers (maplibre/maplibre-native#177 (comment))

[mariusvn]

might be because i don't get it when i download them from my tms server.

[mariusvn]

Little update here, its the same bug as this issue #296

this is relative to the glyphs download.

closing this issue as duplicate of #296