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Switching between source languages
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Switching between source languages
There are two ways to control the working language—either have GDB set it
automatically, or select it manually yourself. You can use the set language command for either purpose. On startup, GDB defaults to setting the language
automatically. The working language is used to determine how expressions you
type are interpreted, how values are printed, etc.
In addition to the working language, every source file that GDB knows about
has its own working language. For some object file formats, the compiler might
indicate which language a particular source file is in. However, most of the time
GDB infers the language from the name of the file. The language of a source
file controls whether C++ names are demangled—this way
backtrace can show each frame appropriately for its own language. There is no way to
set the language of a source file from within GDB. This is most commonly a
problem when you use a program, such as cfront or f2c, that generates C but is written in another language. In that case, make the
program use #line directives in its C output; that way GDB will know the correct language of
the source code of the original program, and will display that source code, not
the generated C code.
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