mingw/info/gdb/Automatically.html

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  12 Node:<a name="Automatically">Automatically</a>,
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  18 <h4 class="subsection">Having GDB infer the source language</h4>
  19
  20    <p>To have GDB set the working language automatically, use
  21 <code>set language local</code> or <code>set language auto</code>.  GDB
  22 then infers the working language.  That is, when your program stops in a
  23 frame (usually by encountering a breakpoint), GDB sets the
  24 working language to the language recorded for the function in that
  25 frame.  If the language for a frame is unknown (that is, if the function
  26 or block corresponding to the frame was defined in a source file that
  27 does not have a recognized extension), the current working language is
  28 not changed, and GDB issues a warning.
  29
  30    <p>This may not seem necessary for most programs, which are written
  31 entirely in one source language.  However, program modules and libraries
  32 written in one source language can be used by a main program written in
  33 a different source language.  Using <code>set language auto</code> in this
  34 case frees you from having to set the working language manually.
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