Debugging a Program With dbx

Understanding the Memory Access Error Report

RTC prints the following information for memory access errors:

type	Type of error.
access	Type of access attempted (read or write).
size	Size of attempted access.
addr	Address of attempted access.
detail	More detailed information about addr. For example, if addr is in the vicinity of the stack, then its position relative to the current stack pointer is given. If addr is in the heap, then the address, size, and relative position of the nearest heap block is given.
stack	Call stack at time of error (with batch mode).
allocation	If `addr` is in the heap, then the allocation trace of the nearest heap block is given.
location	Where the error occurred. If line number information is available, this information includes `line` `number` and `function`. If line numbers are not available, RTC provides `function` and `address`.

The following example shows a typical access error:

Read from uninitialized (rui):
Attempting to read 4 bytes at address 0xefffee50
	which is 96 bytes above the current stack pointer
Variable is `j'
Current function is rui
   12           i = j;