Debug Tutorial: How to Examine Stack

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where [ context ] [ count ]

A stack traceback lists the call sequence which got the program to its current execution point. The traceback is displayed such that the first procedure listed indicates the current point of execution.

• where displays a stack traceback. If count is specified, the stack display is limited to the top count procedures.

• Procedure names are displayed even when the program was not compiled with -g. If a function name cannot be determined, "????()" is displayed in its place. This is currently seen at the bottom of all stack tracebacks and can be ignored.

Examples:

(all) > where
***** (0) *****
one(int) [hello.c{} #7]
main(void) [hello.c{} #24]
cstart() [unknown{} 0x00025646]
????() [hello.c{} 0x00020120]
***** (1) *****
main(void) [hello.c{} #24]
cstart() [unknown{} 0x00025646]
????() [hello.c{} 0x00020120]
(all) > where(0) 1
***** (0) *****
one(int) [hello.c{} #7]