gdb.info: Source Annotations

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Displaying Source

The following annotation is used instead of displaying source code:
     ^Z^Zsource FILENAME:LINE:CHARACTER:MIDDLE:ADDR
   where FILENAME is an absolute file name indicating which source
file, LINE is the line number within that file (where 1 is the first
line in the file), CHARACTER is the character position within the file
(where 0 is the first character in the file) (for most debug formats
this will necessarily point to the beginning of a line), MIDDLE is
`middle' if ADDR is in the middle of the line, or `beg' if ADDR is at
the beginning of the line, and ADDR is the address in the target
program associated with the source which is being displayed.  ADDR is
in the form `0x' followed by one or more lowercase hex digits (note
that this does not depend on the language).