objective c - EXC_BAD_ACCESS on alloc -

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if issue has been posted before, can't find it.

i'm attempting allocate , initialize instance of nsstring in initialization method of subclass of nsoperation (for use nsoperationqueue). nsstring pointer ivar (not property).

the program crashes "exc_bad_access (code=exc_i386_gpflt)".

to isolate problem, i've separated alloc , init functions. main thread crashing on:

m_mystring = [nsstring alloc];

the code in "if" block:

if (somecondition) {   m_mystring = [nsstring alloc];   m_mystring = [m_mystring initwithcstring:acharpointer encoding:nsasciistringencoding]; } else {   m_mystring = [nsstring alloc];   m_mystring = [m_mystring initwitcstring:adifferentcharpointer encoding:nsasciistringencoding]; }

examining thread shows it's crashing on objc_release. don't understand why release called on object in allocation method, seems case...

it's worth mentioning alloc , init instance variable nsstring in same method before if block.

has else run before, , if so, how'd solve it?

i'd glad give more info upon request.


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