support: Delete temporary files in LIFO order

This is required to remove temporary directories which contain
temporary files.  Previously, FIFO order meant that directory
removal was attempted when the directory still contained files,
which meant that temporary directory cleanup was essentially
unsupported.

1 files changed, 5 insertions, 11 deletions

diff --git a/support/temp_file.c b/support/temp_file.c
index 5950aec06b..50cbae606b 100644
--- a/support/temp_file.c
+++ b/support/temp_file.c
@@ -25,7 +25,6 @@
 #include <support/support.h>
 
 #include <paths.h>
-#include <search.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -33,7 +32,7 @@
 /* List of temporary files.  */
 static struct temp_name_list
 {
-  struct qelem q;
+  struct temp_name_list *next;
   char *name;
 } *temp_name_list;
 
@@ -50,10 +49,8 @@ add_temp_file (const char *name)
   if (newname != NULL)
     {
       newp->name = newname;
-      if (temp_name_list == NULL)
-	temp_name_list = (struct temp_name_list *) &newp->q;
-      else
-	insque (newp, temp_name_list);
+      newp->next = temp_name_list;
+      temp_name_list = newp;
     }
   else
     free (newp);
@@ -105,8 +102,7 @@ support_delete_temp_files (void)
       (void) remove (temp_name_list->name);
       free (temp_name_list->name);
 
-      struct temp_name_list *next
-	= (struct temp_name_list *) temp_name_list->q.q_forw;
+      struct temp_name_list *next = temp_name_list->next;
       free (temp_name_list);
       temp_name_list = next;
     }
@@ -119,9 +115,7 @@ support_print_temp_files (FILE *f)
     {
       struct temp_name_list *n;
       fprintf (f, "temp_files=(\n");
-      for (n = temp_name_list;
-           n != NULL;
-           n = (struct temp_name_list *) n->q.q_forw)
+      for (n = temp_name_list; n != NULL; n = n->next)
         fprintf (f, "  '%s'\n", n->name);
       fprintf (f, ")\n");
     }