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239 lines
6.3 KiB
Text
239 lines
6.3 KiB
Text
BASH PATCH REPORT
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=================
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Bash-Release: 5.0
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Patch-ID: bash50-003
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Bug-Reported-by: Andrew Church <achurch+bash@achurch.org>
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Bug-Reference-ID: <5c534aa2.04371@msgid.achurch.org>
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2019-01/msg00276.html
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Bug-Description:
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There are several incompatibilities in how bash-5.0 processes pathname
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expansion (globbing) of filename arguments that have backslashes in the
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directory portion.
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Patch (apply with `patch -p0'):
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*** ../bash-5.0-patched/lib/glob/glob_loop.c 2019-01-16 16:13:21.000000000 -0500
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--- lib/glob/glob_loop.c 2019-02-01 09:45:11.000000000 -0500
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***************
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*** 27,34 ****
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register const GCHAR *p;
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register GCHAR c;
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! int bopen;
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p = pattern;
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! bopen = 0;
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while ((c = *p++) != L('\0'))
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--- 27,34 ----
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register const GCHAR *p;
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register GCHAR c;
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! int bopen, bsquote;
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p = pattern;
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! bopen = bsquote = 0;
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while ((c = *p++) != L('\0'))
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***************
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*** 56,66 ****
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case L('\\'):
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/* Don't let the pattern end in a backslash (GMATCH returns no match
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! if the pattern ends in a backslash anyway), but otherwise return 1,
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! since the matching engine uses backslash as an escape character
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! and it can be removed. */
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! return (*p != L('\0'));
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}
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! return 0;
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}
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--- 56,75 ----
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case L('\\'):
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/* Don't let the pattern end in a backslash (GMATCH returns no match
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! if the pattern ends in a backslash anyway), but otherwise note that
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! we have seen this, since the matching engine uses backslash as an
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! escape character and it can be removed. We return 2 later if we
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! have seen only backslash-escaped characters, so interested callers
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! know they can shortcut and just dequote the pathname. */
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! if (*p != L('\0'))
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! {
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! p++;
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! bsquote = 1;
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! continue;
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! }
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! else /* (*p == L('\0')) */
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! return 0;
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}
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! return bsquote ? 2 : 0;
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}
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*** ../bash-5.0-patched/lib/glob/glob.h 2013-10-28 14:46:12.000000000 -0400
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--- lib/glob/glob.h 2019-03-07 11:06:47.000000000 -0500
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***************
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*** 31,34 ****
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--- 31,35 ----
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#define GX_ADDCURDIR 0x200 /* internal -- add passed directory name */
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#define GX_GLOBSTAR 0x400 /* turn on special handling of ** */
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+ #define GX_RECURSE 0x800 /* internal -- glob_filename called recursively */
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extern int glob_pattern_p __P((const char *));
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*** ../bash-5.0-patched/lib/glob/glob.c 2018-09-20 10:53:23.000000000 -0400
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--- lib/glob/glob.c 2019-03-07 14:23:43.000000000 -0500
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***************
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*** 1062,1066 ****
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unsigned int directory_len;
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int free_dirname; /* flag */
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! int dflags;
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result = (char **) malloc (sizeof (char *));
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--- 1078,1082 ----
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unsigned int directory_len;
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int free_dirname; /* flag */
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! int dflags, hasglob;
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result = (char **) malloc (sizeof (char *));
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***************
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*** 1111,1117 ****
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}
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/* If directory_name contains globbing characters, then we
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! have to expand the previous levels. Just recurse. */
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! if (directory_len > 0 && glob_pattern_p (directory_name))
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{
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char **directories, *d, *p;
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--- 1127,1136 ----
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}
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+ hasglob = 0;
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/* If directory_name contains globbing characters, then we
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! have to expand the previous levels. Just recurse.
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! If glob_pattern_p returns != [0,1] we have a pattern that has backslash
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! quotes but no unquoted glob pattern characters. We dequote it below. */
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! if (directory_len > 0 && (hasglob = glob_pattern_p (directory_name)) == 1)
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{
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char **directories, *d, *p;
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***************
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*** 1176,1180 ****
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d[directory_len - 1] = '\0';
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! directories = glob_filename (d, dflags);
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if (free_dirname)
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--- 1195,1199 ----
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d[directory_len - 1] = '\0';
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! directories = glob_filename (d, dflags|GX_RECURSE);
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if (free_dirname)
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***************
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*** 1333,1336 ****
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--- 1352,1369 ----
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return (NULL);
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}
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+ /* If we have a directory name with quoted characters, and we are
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+ being called recursively to glob the directory portion of a pathname,
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+ we need to dequote the directory name before returning it so the
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+ caller can read the directory */
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+ if (directory_len > 0 && hasglob == 2 && (flags & GX_RECURSE) != 0)
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+ {
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+ dequote_pathname (directory_name);
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+ directory_len = strlen (directory_name);
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+ }
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+
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+ /* We could check whether or not the dequoted directory_name is a
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+ directory and return it here, returning the original directory_name
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+ if not, but we don't do that yet. I'm not sure it matters. */
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+
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/* Handle GX_MARKDIRS here. */
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result[0] = (char *) malloc (directory_len + 1);
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*** ../bash-5.0-patched/pathexp.c 2018-04-29 17:44:48.000000000 -0400
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--- pathexp.c 2019-01-31 20:19:41.000000000 -0500
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***************
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*** 66,74 ****
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register int c;
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char *send;
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! int open;
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DECLARE_MBSTATE;
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! open = 0;
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send = string + strlen (string);
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--- 66,74 ----
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register int c;
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char *send;
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! int open, bsquote;
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DECLARE_MBSTATE;
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! open = bsquote = 0;
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send = string + strlen (string);
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***************
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*** 101,105 ****
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globbing. */
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case '\\':
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! return (*string != 0);
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case CTLESC:
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--- 101,112 ----
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globbing. */
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case '\\':
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! if (*string != '\0' && *string != '/')
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! {
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! bsquote = 1;
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! string++;
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! continue;
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! }
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! else if (*string == 0)
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! return (0);
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case CTLESC:
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***************
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*** 118,122 ****
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#endif
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}
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! return (0);
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}
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--- 125,130 ----
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#endif
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}
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!
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! return (bsquote ? 2 : 0);
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}
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*** ../bash-5.0-patched/bashline.c 2019-01-16 16:13:21.000000000 -0500
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--- bashline.c 2019-02-22 09:29:08.000000000 -0500
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***************
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*** 3753,3757 ****
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case '\\':
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! if (*string == 0)
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return (0);
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}
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--- 3766,3770 ----
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case '\\':
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! if (*string++ == 0)
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return (0);
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}
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*** ../bash-5.0/patchlevel.h 2016-06-22 14:51:03.000000000 -0400
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--- patchlevel.h 2016-10-01 11:01:28.000000000 -0400
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***************
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*** 26,30 ****
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 2
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#endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 3
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#endif /* _PATCHLEVEL_H_ */
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