I have been struggling with this error for the last 3 days and no luck. I'm developing a combined app with uiviewcontrollers and uitableviewcontrollers and in table views I click the add button and it crashes. (no core data coding has been added yet). I have even enabled NSzombies and Guard Malloc and the following points of crashing are on these codes. Please help as I need to try chase a deadline and I don't want to go further in development with the gremlin in the project.
0x0 into 0x93e3bef3 testl 0x93e3570c movl 0x1f1b124 testl 0x1f18eb1 movl 0x8fecf203 addl 0x8feced68 movl 0x8fecc2c8 movb 0x8fecc25e movl 0x8fecc25e movl 0x8fecc25e movl 0x8fecc25e movl 0x8fecd268 movl 0x8fec1664 addl 0x8fec5f99 jmp 0x8febf2ef addl
Use the "Zombie" tool in Instruments.
Open menu Product > Profile. Xcode opens instruments, where you can select a tool. Select Zombie. The app will open in simulator then recreate the EXC_BAD_ACCESS error. Instruments will show you what variable and on what function raised this error.
来源：https://stackoverflow.com/questions/11717193/exc-bad-access-code-2