Info Catalog gdb: C Plus Plus Expressions gdb: C gdb: C Checks

gdb: C Defaults

 
 15.4.1.4 C and C++ Defaults
 ...........................
 
 If you allow GDB to set range checking automatically, it defaults to
 'off' whenever the working language changes to C or C++.  This happens
 regardless of whether you or GDB selects the working language.
 
    If you allow GDB to set the language automatically, it recognizes
 source files whose names end with '.c', '.C', or '.cc', etc, and when
 GDB enters code compiled from one of these files, it sets the working
 language to C or C++.  Having GDB Infer the Source Language
 Automatically, for further details.
 

Info Catalog gdb: C Plus Plus Expressions gdb: C gdb: C Checks