Synchronize libiberty with gcc and add --no-recruse-limit option to tools that suppor...

[deliverable/binutils-gdb.git] / libiberty / cplus-dem.c

diff --git a/libiberty/cplus-dem.c b/libiberty/cplus-dem.c
index 6d58bd899bf7d21144216db24d63376811d688fe..48c0cfd848a081220d7cf4422eb2e6f4bf4ed89d 100644 (file)
--- a/libiberty/cplus-dem.c
+++ b/libiberty/cplus-dem.c
@@ -146,6 +146,7 @@ struct work_stuff
   int *proctypevec;     /* Indices of currently processed remembered typevecs.  */
   int proctypevec_size;
   int nproctypes;
+  unsigned int recursion_level;
 };
 
 #define PRINT_ANSI_QUALIFIERS (work -> options & DMGL_ANSI)
@@ -1292,12 +1293,14 @@ squangle_mop_up (struct work_stuff *work)
       free ((char *) work -> btypevec);
       work->btypevec = NULL;
       work->bsize = 0;
+      work->numb = 0;
     }
   if (work -> ktypevec != NULL)
     {
       free ((char *) work -> ktypevec);
       work->ktypevec = NULL;
       work->ksize = 0;
+      work->numk = 0;
     }
 }
 
@@ -1331,8 +1334,15 @@ work_stuff_copy_to_from (struct work_stuff *to, struct work_stuff *from)
 
   for (i = 0; i < from->numk; i++)
     {
-      int len = strlen (from->ktypevec[i]) + 1;
+      int len;
 
+      if (from->ktypevec[i] == NULL)
+       {
+         to->ktypevec[i] = NULL;
+         continue;
+       }
+
+      len = strlen (from->ktypevec[i]) + 1;
       to->ktypevec[i] = XNEWVEC (char, len);
       memcpy (to->ktypevec[i], from->ktypevec[i], len);
     }
@@ -1342,8 +1352,15 @@ work_stuff_copy_to_from (struct work_stuff *to, struct work_stuff *from)
 
   for (i = 0; i < from->numb; i++)
     {
-      int len = strlen (from->btypevec[i]) + 1;
+      int len;
 
+      if (from->btypevec[i] == NULL)
+       {
+         to->btypevec[i] = NULL;
+         continue;
+       }
+
+      len = strlen (from->btypevec[i]) + 1;
       to->btypevec[i] = XNEWVEC (char , len);
       memcpy (to->btypevec[i], from->btypevec[i], len);
     }
@@ -1401,6 +1418,7 @@ delete_non_B_K_work_stuff (struct work_stuff *work)
 
       free ((char*) work->tmpl_argvec);
       work->tmpl_argvec = NULL;
+      work->ntmpl_args = 0;
     }
   if (work->previous_argument)
     {
@@ -4471,12 +4489,14 @@ remember_Btype (struct work_stuff *work, const char *start,
   char *tem;
 
   tem = XNEWVEC (char, len + 1);
-  memcpy (tem, start, len);
+  if (len > 0)
+    memcpy (tem, start, len);
   tem[len] = '\0';
   work -> btypevec[index] = tem;
 }
 
 /* Lose all the info related to B and K type codes. */
+
 static void
 forget_B_and_K_types (struct work_stuff *work)
 {
@@ -4502,6 +4522,7 @@ forget_B_and_K_types (struct work_stuff *work)
        }
     }
 }
+
 /* Forget the remembered types, but not the type vector itself.  */
 
 static void
@@ -4696,6 +4717,16 @@ demangle_nested_args (struct work_stuff *work, const char **mangled,
   int result;
   int saved_nrepeats;
 
+  if ((work->options & DMGL_NO_RECURSE_LIMIT) == 0)
+    {
+      if (work->recursion_level > DEMANGLE_RECURSION_LIMIT)
+       /* FIXME: There ought to be a way to report
+          that the recursion limit has been reached.  */
+       return 0;
+
+      work->recursion_level ++;
+    }
+
   /* The G++ name-mangling algorithm does not remember types on nested
      argument lists, unless -fsquangling is used, and in that case the
      type vector updated by remember_type is not used.  So, we turn
@@ -4722,6 +4753,9 @@ demangle_nested_args (struct work_stuff *work, const char **mangled,
   --work->forgetting_types;
   work->nrepeats = saved_nrepeats;
 
+  if ((work->options & DMGL_NO_RECURSE_LIMIT) == 0)
+    --work->recursion_level;
+
   return result;
 }