First check in

SRC/patches/01_fix-segfault-jumping-to-label.patch

@@ -0,0 +1,16 @@
+diff -purN a/bc/execute.c b/bc/execute.c
+--- a/bc/execute.c	2006-09-04 21:39:31.000000000 -0500
++++ b/bc/execute.c	2016-09-09 12:57:14.756000000 -0500
+@@ -133,7 +133,11 @@ execute ()
+ 	  gp = functions[pc.pc_func].f_label;
+ 	  l_gp  = label_num >> BC_LABEL_LOG;
+ 	  l_off = label_num % BC_LABEL_GROUP;
+-	  while (l_gp-- > 0) gp = gp->l_next;
++	  while (gp && l_gp-- > 0) gp = gp->l_next;
++	  if (!gp) {
++	    rt_error ("No label group for label %d.", label_num);
++	    break;
++	  }
+ 	  pc.pc_addr = gp->l_adrs[l_off];
+ 	}
+ 	break;

SRC/patches/02_fix-memory-leak.patch

@@ -0,0 +1,24 @@
+diff -purN a/bc/bc.y b/bc/bc.y
+--- a/bc/bc.y	2006-09-04 21:39:31.000000000 -0500
++++ b/bc/bc.y	2016-09-09 13:02:41.476000000 -0500
+@@ -569,6 +569,7 @@ expression		:  named_expression ASSIGN_O
+ 				    generate (">");
+ 				  break;
+ 				}
++			        free($2);	
+ 			    }
+ 			| expression '+' expression
+ 			    {
+diff -purN a/bc/util.c b/bc/util.c
+--- a/bc/util.c	2006-09-04 21:39:31.000000000 -0500
++++ b/bc/util.c	2016-09-09 13:02:41.476000000 -0500
+@@ -602,8 +602,7 @@ lookup (name, namekind)
+     case FUNCTDEF:
+       if (id->f_name != 0)
+ 	{
+-	  if (namekind != FUNCT)
+-	    free(name);
++	  free(name);
+ 	  /* Check to see if we are redefining a math lib function. */ 
+ 	  if (use_math && namekind == FUNCTDEF && id->f_name <= 6)
+ 	    id->f_name = next_func++;

SRC/patches/03_fix-uninitialized-variable.patch

@@ -0,0 +1,11 @@
+diff -purN a/bc/storage.c b/bc/storage.c
+--- a/bc/storage.c	2006-09-04 21:39:31.000000000 -0500
++++ b/bc/storage.c	2016-09-09 13:05:09.720000000 -0500
+@@ -99,6 +99,7 @@ more_functions (VOID)
+     {
+       f = &functions[indx];
+       f->f_defined = FALSE;
++      f->f_void = FALSE;
+       f->f_body = (char *) bc_malloc (BC_START_SIZE);
+       f->f_body_size = BC_START_SIZE;
+       f->f_code_size = 0;

SRC/patches/README

@@ -0,0 +1,2 @@
+Place any patch files here and preface each with a number indicating
+the order of execution. Patch files are expected to use a .patch extension.