gdb.info: Debugging C plus plus
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GDB features for C++
Some GDB commands are particularly useful with C++, and some are
designed specifically for use with C++. Here is a summary:
When you want a breakpoint in a function whose name is overloaded,
GDB breakpoint menus help you specify which function definition
you want. *Note Breakpoint menus: Breakpoint Menus.
Setting breakpoints using regular expressions is helpful for
setting breakpoints on overloaded functions that are not members
of any special classes. *Note Setting breakpoints: Set Breaks.
Debug C++ exception handling using these commands. *Note Setting
catchpoints: Set Catchpoints.
Print inheritance relationships as well as other information for
type TYPENAME. *Note Examining the Symbol Table: Symbols.
`set print demangle'
`show print demangle'
`set print asm-demangle'
`show print asm-demangle'
Control whether C++ symbols display in their source form, both when
displaying code as C++ source and when displaying disassemblies.
*Note Print settings: Print Settings.
`set print object'
`show print object'
Choose whether to print derived (actual) or declared types of
objects. *Note Print settings: Print Settings.
`set print vtbl'
`show print vtbl'
Control the format for printing virtual function tables. *Note
Print settings: Print Settings. (The `vtbl' commands do not work
on programs compiled with the HP ANSI C++ compiler (`aCC').)
`set overload-resolution on'
Enable overload resolution for C++ expression evaluation. The
default is on. For overloaded functions, GDB evaluates the
arguments and searches for a function whose signature matches the
argument types, using the standard C++ conversion rules (see *Note
C++ expressions: C plus plus expressions, for details). If it
cannot find a match, it emits a message.
`set overload-resolution off'
Disable overload resolution for C++ expression evaluation. For
overloaded functions that are not class member functions, GDB
chooses the first function of the specified name that it finds in
the symbol table, whether or not its arguments are of the correct
type. For overloaded functions that are class member functions,
GDB searches for a function whose signature _exactly_ matches the
`Overloaded symbol names'
You can specify a particular definition of an overloaded symbol,
using the same notation that is used to declare such symbols in
C++: type `SYMBOL(TYPES)' rather than just SYMBOL. You can also
use the GDB command-line word completion facilities to list the
available choices, or to finish the type list for you. *Note
Command completion: Completion, for details on how to do this.
Created Mon Nov 8 17:42:38 2004 on tillpc with info_to_html version 0.9.6.