dwarf_errno(3) [freebsd man page]

DWARF_ERRNO(3)						   BSD Library Functions Manual 					    DWARF_ERRNO(3)

NAME

     dwarf_errno -- retrieve the error number corresponding to a Dwarf_Error instance

LIBRARY

     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

     #include <libdwarf.h>

     int
     dwarf_errno(Dwarf_Error err);

DESCRIPTION

     Function dwarf_errno() returns the error number associated with a Dwarf_Error instance.

     Argument err should be a valid handle to a Dwarf_Error instance.

RETURN VALUES

     Function dwarf_errno() returns an integral value.

SEE ALSO

     dwarf(3), dwarf_errmsg(3)

BSD
								  March 25, 2010							       BSD

DWARF_UNDEF_MACRO(3)					   BSD Library Functions Manual 				      DWARF_UNDEF_MACRO(3)

NAME

     dwarf_undef_macro -- record the removal of a macro definition

LIBRARY

     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

     #include <libdwarf.h>

     int
     dwarf_undef_macro(Dwarf_P_Debug dbg, Dwarf_Unsigned lineno, char *name, Dwarf_Error *err);

DESCRIPTION

     Function dwarf_undef_macro() records the removal of a macro definition in a DWARF producer instance.

     Argument dbg should reference a DWARF producer instance allocated using dwarf_producer_init(3) or dwarf_producer_init_b(3).

     Argument lineno specifies the line number of the source line where the macro definition was removed.  A value of zero indicates that the
     macro definition was removed before any source files were read.

     Argument name should point to a NUL-terminated string containing the name of the macro.

     If argument err is not NULL, it will be used to store error information in case of an error.

RETURN VALUES

     On success, function dwarf_undef_macro() returns DW_DLV_OK.  In case of an error, function dwarf_undef_macro() returns DW_DLV_ERROR and sets
     the argument err.

EXAMPLE

     To record the fact that the macro named _STDIO_H_ was removed at line 220 of the current macro file, use:

	   Dwarf_P_Debug dbg;
	   Dwarf_Error de;

	   /* ... Assume 'dbg' refers to a DWARF producer instance... */
	   if (dwarf_undef_macro(dbg, 220, "_STDIO_H_", &de) != DW_DLV_OK)
		   errx(EXIT_FAILURE, "dwarf_def_macro failed: %s",
		       dwarf_errmsg(-1));

ERRORS

     Function dwarf_undef_macro() can fail with:

     [DW_DLE_ARGUMENT]	Either arguments dbg or name was NULL.

     [DW_DLE_MEMORY]	An out of memory condition was encountered during the execution of the function.

SEE ALSO

     dwarf(3), dwarf_def_macro(3), dwarf_end_macro_file(3), dwarf_producer_init(3), dwarf_producer_init_b(3), dwarf_start_macro_file(3),
     dwarf_vendor_ext(3)

BSD
								 November 9, 2011							       BSD