Debugging with GDB
12.1.3 Having GDB infer the source language
To have GDB set the working language automatically, use
`set language local' or `set language auto'. GDB
then infers the working language. That is, when your program stops in a
frame (usually by encountering a breakpoint), GDB sets the
working language to the language recorded for the function in that
frame. If the language for a frame is unknown (that is, if the function
or block corresponding to the frame was defined in a source file that
does not have a recognized extension), the current working language is
not changed, and GDB issues a warning.
This may not seem necessary for most programs, which are written
entirely in one source language. However, program modules and libraries
written in one source language can be used by a main program written in
a different source language. Using `set language auto' in this
case frees you from having to set the working language manually.