DWARF_UNDEF_MACRO(3) | Library Functions Manual | DWARF_UNDEF_MACRO(3) |
dwarf_undef_macro
—
#include <libdwarf.h>
int
dwarf_undef_macro
(Dwarf_P_Debug
dbg, Dwarf_Unsigned lineno, char
*name, Dwarf_Error *err);
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.
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.
_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));
dwarf_undef_macro
() can fail with:
DW_DLE_ARGUMENT
]DW_DLE_MEMORY
]November 9, 2011 | NetBSD 9.2 |