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Mark Wielaard a9f5fb4089 Add --no-write-default-sizes option. 
abidw will write out the exact same size-in-bits address for every
pointer type, reference type, function declaration and function type
even though it is always the same as the translation unit address
size. When giving the --no-write-default-sizes option these aren't
written out anymore. The reader is updated to set the default size
when none is given in the XML description.

Even though size and alignment are handled together in the reader,
default alignment is still set to zero, following commit a05384675

Note that this isn't backward compatible with older libabigail
readers, which will set the size to zero when none is given. So this
option isn't the default.

	* doc/manuals/abidw.rst: Document --no-write-default-sizes.
	* include/abg-writer.h (set_write_default_sizes): New function
	declaration.
	(set_common_options): Call set_write_default_sizes.
	* src/abg-reader.cc (build_function_decl): Get default size.
	(build_pointer_type_def): Likewise.
	(build_reference_type_def): Likewise.
	(build_function_type): Likewise.
	* src/abg-writer.cc (write_context): Add m_write_default_sizes
	bool.
	(get_write_default_sizes): New method.
	(set_write_default_sizes): Likewise.
	(write_size_and_alignment): Add default size and alignment
	parameters.
	(set_write_default_sizes): New function.
	(write_type_decl): Set default size and alignment.
	(write_pointer_type_def): Likewise.
	(write_reference_type_def): Likewise.
	(write_function_decl): Likewise.
	(write_function_type): Likewise.
	(write_class_decl_opening_tag): Likewise.
	(write_union_decl_opening_tag): Likewise.
	* tests/test-types-stability.cc (perform): Also test --abidiff
	with --no-write-default-sizes.
	* tools/abidw.cc (option): Add default_sizes bool.
	(parse_command_line): Parse --no-write-default-sizes.
	(display_usage): Add doc string for --no-write-default-sizes.

Signed-off-by: Mark Wielaard <mark@klomp.org>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2020-04-29 11:56:40 +02:00
..
api [apidoc] Allow brief description at the top of class description pages 2017-01-05 12:51:38 +01:00
manuals Add --no-write-default-sizes option. 2020-04-29 11:56:40 +02:00
vizualization Initial DOT work. 2013-07-23 23:13:55 +02:00
website Update the mailing list registration form on the web page 2020-04-07 11:11:37 +02:00
Makefile.am Fix doxygen configuration file paths in doc/Makefile.am 2015-11-16 16:20:36 +01:00
suppr-doc.txt Update the suppr-doc.txt file for variable suppressions 2014-11-01 12:21:59 +01:00