Exc Bad Access

Testing in a new user will quickly tell you if the problem is system wide or if it s your user s folder that contains the problem.

Exc bad access. I am developing an app in xcode version 11 2 and swift 4 2 in which i fill in a linkedlist and after working with it removing the elements that compose it produces the thread 1 error. First page 1 of 1 page 1 1 last loading page content. 0x0000000183949db8 libobjc a dylib objc msgsend uncached impcache 56 frame 2. Debugging exc bad access can be tricky and frustrating.

Tid 0x4b6e9 0x000000018393f890 libobjc a dylib lookupimporforward 80 queue com apple main thread stop reason exc bad access code 1 address 0x100 frame 0. This could be because. Exc bad access code 2 address 0x16d0f3ff0. We re constantly working with pointers to memory in swift that link to a certain memory address.

Exc bad access is an exception raised as a result of accessing bad memory. Okay i know there is another question about exc bad access here but that seems to deal with objective c and iphone dev while mine is only regular c. Mac pro mac os x 10 5 6 exc bad access sigbus posted on apr 20 2009 3 37 pm. 0x000000018393f890 libobjc a dylib lookupimporforward 80 frame 1.

What exc bad access is saying is that you did something that caused a pointer yours one internal to the iphone or one that the allocator is using to be dereferenced and that memory location isn t inside one of the chunks assigned to your program. This is because the object is gone there is no information what class was it or what source file or anything else. The first thing you need to understand is that your application doesn t necessarily crash the moment the block of memory is no longer accessible by your application. An application will crash whenever we try to access a pointer that is invalid or no longer exists.

I am new to c and am almost done with my. Exc bad access code 2 address 0x16d0f3ff0 hi. All replies drop down menu. An exc bad access signal is the result of passing an invalid pointer to a system call.

However now that exc bad access is no longer an enigma for you it should be less daunting. That s really tough to debug with nslog nslog is helpful but you need to put 1 000 nslogs around to fetch where is the problem. I m not familiar with iphone development but you should double check all your buffer pointers that you re passing to system calls.