Most minimal reproduction steps:

Open Board Editor
Add an additional white pawn to e4 (or any other square apparently)
Open Analysis board

It looks like stockfish crashes (see stacktrace below). Interestingly, the same reproduction steps also crash the old lichess app. Not sure if this is actually a stockfish issue, or if we're giving stockfish wrong/unexpected inputs. @veloce any ideas?

I/flutter ( 3443): Engine state: EngineState.loading
I/flutter ( 3443): Engine state: EngineState.computing
F/libc    ( 3443): Fatal signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0x748d40340c00 in tid 3813 (DartWorker), pid 3443 (.mobileV2.debug)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'google/sdk_gphone64_x86_64/emu64xa:15/AP31.240617.003/12088229:user/release-keys'
Revision: '0'
ABI: 'x86_64'
Timestamp: 2024-09-10 08:32:58.701874929+0200
Process uptime: 17s
Cmdline: org.lichess.mobileV2.debug
pid: 3443, tid: 3813, name: DartWorker  >>> org.lichess.mobileV2.debug <<<
uid: 10201
signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0x0000748d40340c00
    rax 0000748d15200000  rbx 0000748d148308c0  rcx 00000000158a0000  rdx 0000000000006fcc
    r8  0000748d1483a300  r9  0000748d15200c00  r10 00000000ffffffb3  r11 0000748fe72485f8
    r12 0000748d213eb0c8  r13 0000748d148308c0  r14 0000748d148308c0  r15 0000748d148308c0
    rdi 0000748d14828350  rsi 00000000ffffffff
    rbp 0000748d148283f0  rsp 0000748d14828310  rip 0000748d1edcede9
11 total frames
backtrace:
      #00 pc 0000000002751de9  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (void Stockfish::Eval::NNUE::FeatureTransformer::update_accumulator_refresh<(Stockfish::Color)0>(Stockfish::Position const&) const+329) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #01 pc 0000000002752a09  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (void Stockfish::Eval::NNUE::FeatureTransformer::update_accumulator<(Stockfish::Color)0>(Stockfish::Position const&) const+249) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #02 pc 0000000002750c17  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (Stockfish::Eval::NNUE::FeatureTransformer::transform(Stockfish::Position const&, unsigned char*, int) const+39) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #03 pc 000000000274f189  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (Stockfish::Eval::NNUE::evaluate(Stockfish::Position const&, bool, int*)+185) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #04 pc 0000000002732a73  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (Stockfish::Eval::evaluate(Stockfish::Position const&)+275) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #05 pc 0000000002763614  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #06 pc 0000000002761433  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (Stockfish::Thread::search()+2819) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #07 pc 00000000027918a6  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (Stockfish::Thread::idle_loop()+310) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #08 pc 0000000002796519  /data/app/~~LucKNvJJBZyjEEeoNv9fFA==/org.lichess.mobileV2.debug-5P87t8riTcwJ2OsXXwl_Wg==/base.apk!libstockfish.so (offset 0x7d66000) (void* Stockfish::start_routine<Stockfish::Thread, std::__ndk1::pair<Stockfish::Thread*, void (Stockfish::Thread::*)()>>(void*)+105) (BuildId: ef8ea4ea7db75e97494535e846c46975098d6654)
      #09 pc 000000000006d62a  /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+58) (BuildId: eb58b4d427279994f00c0e1818477e4f)
      #10 pc 0000000000060348  /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+56) (BuildId: eb58b4d427279994f00c0e1818477e4f)

Uh oh!

[bug] app crash when you add any pieces on the board #1005

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