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History log of /src/tests/usr.bin/xlint/lint1/msg_031.c
RevisionDateAuthorComments
 1.9  28-Mar-2023  rillig lint: warn about extern declarations outside headers

https://mail-index.netbsd.org/tech-userlevel/2023/03/15/msg013727.html
 1.8  17-Jun-2022  rillig tests/lint: make 'expect+-' comments stricter

Previously, the expectations from these comments were already satisfied
if the expectation occurred somewhere in the actual message from lint.
This meant that the prefix 'error:' or 'warning:' could be omitted from
the 'expect' comment. These omissions were hard to see in a manual
review. Now any omissions must be visually marked with '...'.

The test msg_342 now reports its messages properly as being in the file
msg_342.c, rather than msg_341.c. This had been a copy-and-paste
mistake.
 1.7  15-Jun-2022  rillig tests/lint: replace 'expect' comments with 'expect+-' comments

The 'expect+-' comments provide more context, which makes it easier to
read the .c files on their own, without having to look up the actual
diagnostics in the .exp files.

Add tests for messages 105 and 106, which were about the obscure feature
of some traditional C compilers that allowed the expression 'x->member'
to access a struct member, even if 'x' had integer type.

The remaining tests will be migrated in a future commit.
 1.6  13-Jul-2021  rillig lint: fix wording of message for incomplete struct (2021-07-04)

A struct member is not an argument. In err.c 1.124 from 2021-07-04, the
wording had been changed, without noticing that the message was used
twice: once for an argument, once for a struct member.
 1.5  04-Jul-2021  rillig lint: improve wording for incomplete struct or union
 1.4  16-Mar-2021  rillig tests/lint: add tests for a few more messages
 1.3  31-Jan-2021  rillig lint: add expections to tests

msg_098: fix suffix for floating point constant
msg_127: remove prototype
msg_146: fix return type
 1.2  03-Jan-2021  rillig lint: add tests for some of the messages
 1.1  02-Jan-2021  rillig lint: add a test for each message produced by lint1

Having a test for each message ensures that upcoming refactorings don't
break the basic functionality. Adding the tests will also discover
previously unknown bugs in lint.

The tests ensure that every lint message can actually be triggered, and
they demonstrate how to do so. Having a separate file for each test
leaves enough space for documenting historical anecdotes, rationale or
edge cases, keeping them away from the source code.

The interesting details of this commit are in Makefile and
t_integration.sh. All other files are just auto-generated.

When running the tests as part of ATF, they are packed together as a
single test case. Conceptually, it would have been better to have each
test as a separate test case, but ATF quickly becomes very slow as soon
as a test program defines too many test cases, and 50 is already too
many. The time complexity is O(n^2), not O(n) as one would expect.
It's the same problem as in tests/usr.bin/make, which has over 300 test
cases as well.

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