EXC_BAD_ACCESS on device

[markrickert]

So I'm trying to get this up and running on a device and I'm running into an EXC_BAD_ACCESS error when running in debug mode (it just stops with no error message when not in debug mode). Any idea about what's going on here?

$ rake device debug=1

  packet: QSetEnableAsyncProfiling;enable:1;interval_usec:1000000;scan_type:0xfffffeff;
response: OK
Process 0 connected
Executing commands in '/var/folders/v7/vrn4z9cs6ml0q2817kx3vrnh0000gn/T/_deploylldbcmds'.
(lldb)  command script import /var/folders/v7/vrn4z9cs6ml0q2817kx3vrnh0000gn/T/_deploylldbcmds.py
Process 194 stopped
* thread #1: tid = 0x14c7, 0x2bea9028 dyld`_dyld_start, stop reason = signal SIGSTOP
    frame #0: 0x2bea9028 dyld`_dyld_start
dyld`_dyld_start:
-> 0x2bea9028:  mov    r8, sp
   0x2bea902c:  sub    sp, sp, #0x10
   0x2bea9030:  bic    sp, sp, #0x7
   0x2bea9034:  ldr    r3, [pc, #112]            ; _dyld_start + 132
(lldb) c
Process 194 resuming
"Starting IAP"
2014-06-30 21:25:05.292 MYApp[194:60b] Starting purchase process.
Process 194 stopped
* thread #1: tid = 0x14c7, 0x3a2b5622 libobjc.A.dylib`objc_msgSend + 2, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x4)
    frame #0: 0x3a2b5622 libobjc.A.dylib`objc_msgSend + 2
libobjc.A.dylib`objc_msgSend + 2:
-> 0x3a2b5622:  ldr.w  r9, [r0]
   0x3a2b5626:  ldrh.w r12, [r9, #12]
   0x3a2b562a:  ldr.w  r9, [r9, #8]
   0x3a2b562e:  and.w  r12, r12, r1

[markrickert]

To add a little more info:

Here's the method call where it's crashing:

(lldb) x/s $r1
0x32974cdc: "isKindOfClass:"
(lldb)

Looks like CargoBay is using that method twice:
https://github.com/mattt/CargoBay/blob/master/CargoBay/CargoBay.m#L168
https://github.com/mattt/CargoBay/blob/master/CargoBay/CargoBay.m#L712

[markrickert]

The same thing happens when I use the CargoBay example code (converted over to RubyMotion, of course)

    identifiers = ["my.product.identifier"]
    CargoBay.sharedManager.productsWithIdentifiers(
      NSSet.setWithArray(identifiers),
      success:-> products, invalidIdentifiers {
        NSLog("Products: %@", products)
        NSLog("Invalid Identifiers: %@", invalidIdentifiers)
      }, failure:-> error {
        NSLog("Error: %@", error)
      }
    )

[holgersindbaek]

I'm not sure what's going on there. Let me know what you find out.

All the best

Holger Sindbaek
Holgersindbaek.com

On Monday, June 30, 2014 at 8:28 PM, Mark Rickert wrote:

So I'm trying to get this up and running on a device and I'm running into an EXC_BAD_ACCESS error when running in debug mode (it just stops with no error message when not in debug mode). Any idea about what's going on here?
$ rake device debug=1 packet: QSetEnableAsyncProfiling;enable:1;interval_usec:1000000;scan_type:0xfffffeff; response: OK Process 0 connected Executing commands in '/var/folders/v7/vrn4z9cs6ml0q2817kx3vrnh0000gn/T/_deploylldbcmds'. (lldb) command script import /var/folders/v7/vrn4z9cs6ml0q2817kx3vrnh0000gn/T/_deploylldbcmds.py Process 194 stopped * thread #1: tid = 0x14c7, 0x2bea9028 dyld_dyld_start, stop reason = signal SIGSTOP frame #0: 0x2bea9028 dyld_dyld_start dyld_dyld_start: -> 0x2bea9028: mov r8, sp 0x2bea902c: sub sp, sp, #0x10 0x2bea9030: bic sp, sp, #0x7 0x2bea9034: ldr r3, [pc, #112] ; _dyld_start + 132 (lldb) c Process 194 resuming "Starting IAP" 2014-06-30 21:25:05.292 MYApp[194:60b] Starting purchase process. Process 194 stopped * thread #1: tid = 0x14c7, 0x3a2b5622 libobjc.A.dylibobjc_msgSend + 2, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x4) frame #0: 0x3a2b5622 libobjc.A.dylibobjc_msgSend + 2 libobjc.A.dylibobjc_msgSend + 2: -> 0x3a2b5622: ldr.w r9, [r0] 0x3a2b5626: ldrh.w r12, [r9, #12] 0x3a2b562a: ldr.w r9, [r9, #8] 0x3a2b562e: and.w r12, r12, r1

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[stevebooks]

Yeah, I am getting the same error. Any status updates on this?

[markrickert]

I eventually wound up writing my own based on a tutorial.

https://github.com/MohawkApps/TheShowCloser/blob/master/app/helpers/iap_helper.rb

And here's usage:
https://github.com/MohawkApps/TheShowCloser/blob/e66411e95f4b10f6163249ccb6c12175ee3bf163/app/helpers/jewelry_downloader.rb#L59-L90

This code is running and working in production.

[stevebooks]

@markrickert Thanks for the links!

[jsheets]

I ran into this too on startup. I ran the app in the simulator and it just stopped, no error message. In debug mode, I did a "bt" stacktrace and noticed a crash in NSUserDefaults. On a hunch, I converted the price to a float and it worked fine. Must not have liked the BigDecimal.

module Vendor
  class Info
    ...
    def productsRequest(request, didReceiveResponse:response)
    ...
        NSUserDefaults["#{@params.id}.price"] = product.price.to_f