Repository: flutter
Issue: Crash when I enable Breakpoint in Android Studio
Labels: c: crash,tool,dependency: dart,a: debugging,P2,team-tool,triaged-tool

I did set a breakpoint in my code (Android Studi) and get this crash. The code works fine when I just let it run.

The crash happens only in this method. If I set the breakpoint after the call to this method all is fine.
```
 _analyzeResponse(List<Tuple2<String, String>> response) {
    print(Tuple2.printPretty(response));

    List<String> validECUs = response
        .where((t) => t.item1.startsWith('atcra') || t.item1.startsWith('010D'))
        .toList()
        .take2((v1, v2) => Tuple2<String, String>(v1.toString(), v2.toString()))
        .where((t) => t.item2.contains('410') && t.item1.length > 8)
        .map((t) => t.item1.substring(6, 9))
        .toList();

    print(validECUs);

    _validECUs.value = validECUs;
    _selectedECU.value = validECUs.first;
    _state.value = CarTestState.ANALYZED;
  }
```


 
```
I/flutter (31812): 
E/Dart    (31812): ../../third_party/dart/runtime/vm/compiler/frontend/kernel_translation_helper.cc: 1936: error: Unexpected tag 0 (Nothing) in ?, expected a procedure, a constructor or a function node
E/DartVM  (31812): version=2.7.0 (Fri Nov 8 17:16:37 2019 +0000) on "android_arm64"
E/DartVM  (31812): thread=31853, isolate=main(0x732cb3f000)
E/DartVM  (31812):   pc 0x000000732bb1cf4c fp 0x00000073299fc070 /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so+0x1689f4c
E/DartVM  (31812): -- End of DumpStackTrace
F/libc    (31812): Fatal signal 6 (SIGABRT), code -6 (SI_TKILL) in tid 31853 (Thread-3), pid 31812 (com.cobd.chkobd)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'motorola/river/river:9/PPOS29.114-134-4/fe214:user/release-keys'
Revision: 'PVT'
ABI: 'arm64'
pid: 31812, tid: 31853, name: Thread-3  >>> com.cobd.chkobd <<<
signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
    x0  0000000000000000  x1  0000000000007c6d  x2  0000000000000006  x3  0000000000000008
    x4  0000000000000000  x5  0000000000000000  x6  0000000000000000  x7  0000000080000000
    x8  0000000000000083  x9  87f259af9a2ab949  x10 0000000000000000  x11 fffffffc7ffffbdf
    x12 0000000000000001  x13 0000000000000020  x14 ffffffffffffffff  x15 0000372506b11810
    x16 00000073ca5b22c8  x17 00000073ca4f0190  x18 0000000000000001  x19 0000000000007c44
    x20 0000000000007c6d  x21 0000007321fb2800  x22 00000073299fc498  x23 0000000000000000
    x24 000000000001001f  x25 000000732a6417d0  x26 0000000000000000  x27 000000732a69e218
    x28 00000073299fc390  x29 00000073299fc070
    sp  00000073299fc030  lr  00000073ca4e4c3c  pc  00000073ca4e4c64
backtrace:
    #00 pc 0000000000021c64  /system/lib64/libc.so (abort+116)
    #01 pc 000000000156d938  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #02 pc 00000000017fc6c4  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #03 pc 00000000017fc79c  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #04 pc 0000000001801d24  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #05 pc 00000000016882a0  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #06 pc 00000000017dee44  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #07 pc 00000000017deaac  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #08 pc 00000000017eb8b8  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #09 pc 000000000180d154  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #10 pc 000000000180e180  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #11 pc 000000000180ef24  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #12 pc 000000000180eb3c  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #13 pc 000000000180d520  /data/app/com.cobd.chkobd-4-n5BiLpZQjsU5JdTj-l1A==/lib/arm64/libflutter.so (offset 0x1200000)
    #14 pc 00000000000014f0  <anonymous:0000007327e80000>
Failed to send request: {"jsonrpc":"2.0","id":"139","method":"resume","params":{"isolateId":"isolates/741850778606671"}}
```

I am on Flutter Beta but the same happens on stable:

```
C:\Projects\chkobd>flutter doctor -v
[√] Flutter (Channel beta, v1.11.0, on Microsoft Windows [Version 10.0.18362.476], locale en-US)
    • Flutter version 1.11.0 at c:\sdks\flutter
    • Framework revision 856a90e67c (3 weeks ago), 2019-11-08 18:00:01 -0800
    • Engine revision af04338413
    • Dart version 2.7.0

 
[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at C:\Users\ride4\AppData\Local\Android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
    • All Android licenses accepted.

[√] Android Studio (version 3.5)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 41.1.2
    • Dart plugin version 191.8593
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] VS Code, 32-bit edition (version 1.30.1)
    • VS Code at C:\Program Files (x86)\Microsoft VS Code
    • Flutter extension version 2.21.1

[√] Connected device (2 available)
    • Nexus 5  • 03b71506f0b4f6b6 • android-arm   • Android 6.0.1 (API 23)
    • moto g 7 • ZY225G4LJN       • android-arm64 • Android 9 (API 28)

• No issues found!
```