CVS commit: src/usr.bin/make

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

Module Name:    src
Committed By:   rillig
Date:           Sun Nov 29 15:14:33 UTC 2020

Modified Files:
        src/usr.bin/make: dir.c

Log Message:
make(1): remove wrong comment in Dir_InitCur

In a makefile with repeated ".CURDIR=." lines, Dir_AddDir is called with
a NULL path, once per line.  Since the path is NULL, the search for
OpenDirs_Find is skipped and the directory is always read from disk.
The freshly read directory has a refCount of 1, and the refCount never
raises above 2.

In Dir_InitCur, the directory of the previous .CURDIR has a refCount of
2, which is decremented twice and then freed.  After this, the new
directory is placed in the global 'cur', after incrementing its refCount
to 2.

It still seems wrong that the refCount of 'cur' is 2 instead of 1, but
it works well.


To generate a diff of this commit:
cvs rdiff -u -r1.236 -r1.237 src/usr.bin/make/dir.c

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