CVS log for src/tests/usr.bin/xlint/lint1/Attic/d_type_conv1.c

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tests/lint: group tests by topic

lint: remove redundant '#' after 'argument' in diagnostics

lint: warn about extern declarations outside headers

https://mail-index.netbsd.org/tech-userlevel/2023/03/15/msg013727.html

lint: in C99 mode, do not warn about non-prototype conversions

Message 259 is "argument #%d is converted from '%s' to '%s' due to
prototype", and it is intended to warn about compatibility between
traditional C where functions had no prototypes and standard C where
functions have prototypes.

Running lint in C99 mode is further away from traditional C than running
lint in C90 mode, so that warning doesn't make sense for C99.  There are
still some inconsistencies in the 5 language version modes that lint
offers:

	-t		for traditional C
	(no option)	for migrating traditional C to C90
	-s		for C90 code
	-S		for C99 code
	-Ac11		for C11 code

By disabling warning 259 in C99 mode, a typical NetBSD build produces
14.500 fewer warnings than before, of about 100.000 total.

Message 259 overlaps with message 298 "conversion from '%s' to '%s' may
lose accuracy, arg #%d", and in some cases of potentially lossy
conversions, lint now produces none of these messages.  In some other
cases, these warnings were reported redundantly.  The cases where
message 298 makes sense will be added back later, as needed.

tests/lint: expect complete messages in feature tests

Previously, the tests contained many comments like /* expect: 123 */,
which were useless to a casual reader since nobody is expected to learn
lint's message IDs by heart.  Replace these with the complete
diagnostics, to show what lint is complaining about.

The tests named msg_*.c have been left unmodified since they mention the
full message text in their header comment.

No functional change.

lint: force each test to declare the expected diagnostics

By listing the expected diagnostics directly at the code that triggers
the diagnostics, it is easier to cross-check whether the diagnostics
make sense.

No functional change to lint itself.

lint: add common header for all tests

For those tests that didn't use GCC-style line markers such as "# 2",
the line numbers of the diagnostics stay the same.  This is purely
conincidental.  Before, the 3 lines came from lint's built-in
definitions (see 'builtins' in main1.c), and line number counting
continued as if nothing had happened, making the first line of the
actual file line 4.  These 3 built-in lines are now replaced with 3
lines of file header.

sync with head

file d_type_conv1.c was added on branch yamt-pagecache on 2012-04-17 00:09:23 +0000

Deprecate tests/util.