libiberty: No longer use /usr/tmp

/usr/tmp is antiquated and not present on decently modern systems.
Remove it from consideration when choosing a directory for temporary
files.

libiberty:

2021-06-29  Gerald Pfeifer  <gerald@pfeifer.com>

	* make-temp-file.c (usrtmp): Remove.
	(choose_tmpdir): Remove use of usrtmp.

diff --git a/libiberty/make-temp-file.c b/libiberty/make-temp-file.c
index 7465cec..31f87fb 100644 (file)
--- a/libiberty/make-temp-file.c
+++ b/libiberty/make-temp-file.c
@@ -81,8 +81,6 @@ try_dir (const char *dir, const char *base)
 }
 
 static const char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 };
-static const char usrtmp[] =
-{ DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 };
 static const char vartmp[] =
 { DIR_SEPARATOR, 'v', 'a', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 };
 
@@ -129,9 +127,8 @@ choose_tmpdir (void)
        base = try_dir (P_tmpdir, base);
 #endif
 
-      /* Try /var/tmp, /usr/tmp, then /tmp.  */
+      /* Try /var/tmp, then /tmp.  */
       base = try_dir (vartmp, base);
-      base = try_dir (usrtmp, base);
       base = try_dir (tmp, base);
       
       /* If all else fails, use the current directory!  */