iOS Question Weird Debugging issue

[RVP]

lstIncident = DBUtils.ExecuteMemoryTable(SQL1, "Select * from tblIncident Order by ASA",Null,0)
.
.
.
Dim tmap As Map
Dim cntr As Int
tmap.Initialize
    For cntr = 0 To lstIncident.Size-1
        tmap = lstIncident.Get(cntr)
        If tmap.Size>0 Then
            tt = tmap.Get(0)
            If tt = ASA Then
                 fc = tmap.Get(1)
    '             cntr = lstIncident.Size-1
            End If
        End If
    Next

When run in debug, but without any breakpoints this code errors at tt = tmap.Get(0) If I step thru the code by putting a break point just before this, it works fine.

Here is the actual logged error.

Error occurred on line: 192 (Main)
Out of bounds. Index=382918032 Length=2
Stack Trace: (
  CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 150
  libobjc.A.dylib      objc_exception_throw + 38
  CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 0
  GafferProLighting    -[B4IArray getObjectFast:] + 238
  GafferProLighting    -[B4IArray Get:] + 76
  GafferProLighting    -[b4i_main _calculatelights] + 6066
  GafferProLighting    -[b4i_main _gmap_click:] + 6324
  CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 68
  CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 300
  GafferProLighting    +[B4I runDynamicMethod:method:throwErrorIfMissing:args:] + 1788
GafferProLighting    -[B4IShell runMethod:] + 496
GafferProLighting    -[B4IShell raiseEventImpl:method:args::] + 1768
GafferProLighting    -[B4IShellBI raiseEvent:event:params:] + 1332
GafferProLighting    +[B4IObjectWrapper raiseEvent:::] + 220
GafferProLighting    -[B4IMapDelegate mapView:didTapAtCoordinate:] + 164
CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 68
CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 300
CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 50
GafferProLighting    -[GMSDelegateForward forwardInvocation:] + 98
CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 354
CoreFoundation       _CF_forwarding_prep_0 + 24
GafferProLighting    -[GMSMapView vectorMapView:didTapCoordinate:tapRadius:] + 130
GafferProLighting    -[GMSVectorMapView didTapAt:] + 732
GafferProLighting    -[GMSGestureHandlerView handleSingleTapGesture:] + 90
UIKit                <redacted> + 294
UIKit                by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 668
UIKit                by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 46
UIKit                by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 216
UIKit                by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 2926
CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 20
CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 278
CoreFoundation       by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 914
CoreFoundation       CFRunLoopRunSpecific + 476
CoreFoundation       CFRunLoopRunInMode + 106
GraphicsServices     GSEventRunModal + 136
UIKit                UIApplicationMain + 1440
GafferProLighting    main + 108
libdyld.dylib        by TermCoach"> redacted[IMG]http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png[/IMG]> + 2
)

 

[Erel]

Can you send me the complete project to [email protected]?

 

[RVP]

Done

 

[RVP]

Here is another interesting thing.

I add my ExecuteMapList function to the B4I DBUtils, (See library thread) and switched over to using that, now I do not get any error.

lstIncident = DBUtils.ExecuteMapList(SQL1, "Select * from tblIncident Order by ASA",Null,0)

tmap.Initialize
    For cntr = 0 To lstIncident.Size-1
        tmap = lstIncident.Get(cntr)
        Log("tMAP: " & tmap.Size)
        If tmap.Size>0 Then
            tt = tmap.Get("asa")
            If tt = ASA Then
                 fc = tmap.Get("footcandles")
    '             cntr = lstIncident.Size-1
            End If
        End If
    Next

 

[Erel]

I'm now running your app. What are the steps to reproduce this issue?

 

[RVP]

Zoom in on any area of the map, tap to drop a marker, then tap in another spot to drop a second. Should crash.

 

[Erel]

DBUtils.ExecuteMemoryTable returns a List. Each item in the list is an array of strings.

This means that this code is wrong:

tmap = lstIncident.Get(cntr)

As tmap is a Map instead of an array.

 

[RVP]

Weird it would work if stepping thru it. But that explains why it stopped blowing up when I added the executemaplist function, because then it was a map.