Add bash 5.2 to third_party

third_party/bash/hashcmd.h

@@ -0,0 +1,43 @@
+/* hashcmd.h - Common defines for hashing filenames. */
+
+/* Copyright (C) 1993-2020 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "stdc.h"
+#include "hashlib.h"
+
+#define FILENAME_HASH_BUCKETS 256	/* must be power of two */
+
+extern HASH_TABLE *hashed_filenames;
+
+typedef struct _pathdata {
+  char *path;		/* The full pathname of the file. */
+  int flags;
+} PATH_DATA;
+
+#define HASH_RELPATH	0x01	/* this filename is a relative pathname. */
+#define HASH_CHKDOT	0x02	/* check `.' since it was earlier in $PATH */
+
+#define pathdata(x) ((PATH_DATA *)(x)->data)
+
+extern void phash_create PARAMS((void));
+extern void phash_flush PARAMS((void));
+
+extern void phash_insert PARAMS((char *, char *, int, int));
+extern int phash_remove PARAMS((const char *));
+extern char *phash_search PARAMS((const char *));