CVS commit: src/usr.bin/xlint/lint1

["Roland Illig" <rillig%netbsd.org@localhost>]

Module Name:    src
Committed By:   rillig
Date:           Fri Apr 23 20:26:43 UTC 2021

Modified Files:
        src/usr.bin/xlint/lint1: cgram.y

Log Message:
lint: merge duplicate code in grammar for GCC compound expressions

This increases the number of shift/reduce conflicts, once again.  I
don't know why since the previous two grammar rules only differed in a
single detail.  One of them had a declaration_list while the other
didn't.  This difference is exactly what declaration_list_opt is for.

Anyway, the tests for both cases (with and without declarations) work
exactly as before.

Merging this duplicate code will probably make it easier to fix the
current limitation in lint regarding GCC compound expressions that a
statement followed by a declaration generates a syntax error.

Fixing this is not trivial, my first attempt failed either with
segmentation faults or with sym->s_type becoming NOSPEC during the
expression.


To generate a diff of this commit:
cvs rdiff -u -r1.220 -r1.221 src/usr.bin/xlint/lint1/cgram.y

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.