CVS log for src/tests/usr.bin/xlint/lint1/Attic/feat_stacktrace.exp

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tests/lint: remove .exp files, as they have become redundant

Now that each lint1 test lists all generated diagnostics as 'expect'
comments, the information from the .exp files is no longer needed.  The
only information that gets lost is the order of the diagnostics, which
is mostly relevant for paired messages like 'inconsistent definition' +
'previous definition was here'.

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: in code from included files, print stack trace

Previously, the standard NetBSD build generated several lint warnings in
lhash.h from OpenSSL, without providing any hint as to which file
actually included that header.  In cases like these, lint now interprets
the line number information in the preprocessor output from GCC to
reconstruct the exact include path to the file in question.

The program check-expect.lua had to be rewritten almost completely since
it assumed that all diagnostics would come from the main file.  In all
existing tests, this was true, but these tests did not cover all cases
that occurred in practice.  Now it records the complete location of the
diagnostic instead of just the line number.