No specific user configuration

[platform/upstream/bash.git] / unwind_prot.c

diff --git a/unwind_prot.c b/unwind_prot.c
index 9e150a6..85a10b5 100644 (file)
--- a/unwind_prot.c
+++ b/unwind_prot.c
@@ -46,8 +46,9 @@
 #include "command.h"
 #include "general.h"
 #include "unwind_prot.h"
-#include "quit.h"
 #include "sig.h"
+#include "quit.h"
+#include "error.h"     /* for internal_warning */
 
 /* Structure describing a saved variable and the value to restore it to.  */
 typedef struct {
@@ -240,18 +241,24 @@ unwind_frame_discard_internal (tag, ignore)
      char *tag, *ignore;
 {
   UNWIND_ELT *elt;
+  int found;
 
+  found = 0;
   while (elt = unwind_protect_list)
     {
       unwind_protect_list = unwind_protect_list->head.next;
       if (elt->head.cleanup == 0 && (STREQ (elt->arg.v, tag)))
        {
          uwpfree (elt);
+         found = 1;
          break;
        }
       else
        uwpfree (elt);
     }
+
+  if (found == 0)
+    internal_warning ("unwind_frame_discard: %s: frame not found", tag);
 }
 
 /* Restore the value of a variable, based on the contents of SV.
@@ -269,17 +276,20 @@ unwind_frame_run_internal (tag, ignore)
      char *tag, *ignore;
 {
   UNWIND_ELT *elt;
+  int found;
 
+  found = 0;
   while (elt = unwind_protect_list)
     {
       unwind_protect_list = elt->head.next;
 
       /* If tag, then compare. */
-      if (!elt->head.cleanup)
+      if (elt->head.cleanup == 0)
        {
          if (tag && STREQ (elt->arg.v, tag))
            {
              uwpfree (elt);
+             found = 1;
              break;
            }
        }
@@ -293,6 +303,8 @@ unwind_frame_run_internal (tag, ignore)
 
       uwpfree (elt);
     }
+  if (tag && found == 0)
+    internal_warning ("unwind_frame_run: %s: frame not found", tag);
 }
 
 static void
@@ -324,3 +336,22 @@ unwind_protect_mem (var, size)
 {
   without_interrupts (unwind_protect_mem_internal, var, (char *) &size);
 }
+
+#if defined (DEBUG)
+#include <stdio.h>
+
+void
+print_unwind_protect_tags ()
+{
+  UNWIND_ELT *elt;
+
+  elt = unwind_protect_list;
+  while (elt)
+    {
+      unwind_protect_list = unwind_protect_list->head.next;
+      if (elt->head.cleanup == 0)
+        fprintf(stderr, "tag: %s\n", elt->arg.v);
+      elt = unwind_protect_list;
+    }
+}
+#endif