slackbuilds/development/kforth/ForthVM.diff

Index: ForthVM.cpp
===================================================================
--- ForthVM.cpp	(revision 7)
+++ ForthVM.cpp	(working copy)
@@ -155,6 +155,14 @@
 //                    PUSH_IVAL and PUSH_ADDR
 //  2011-02-06  km  fixed problem with FS. not restoring original precision.
 //  2011-03-05  km  removed commented out code which was replaced by macros.
+//  2011-03-10  km  added global string dir_env_var to allow default directory
+//                    environment variable to be specified externally, in the
+//                    Makefile.
+//  2011-11-01  km  revised CPP_allot to ensure all created words which have
+//                    ALLOTed memory also have appropriate execution code;
+//                    This change also allows removal of common code from
+//                    CPP_variable and CPP_fvariable.
+const char* dir_env_var=DIR_ENV_VAR;
 
 #include <string.h>
 #include <stdlib.h>
@@ -1550,6 +1558,13 @@
 	{ 
 	  id->Pfa = new byte[n];
 	  if (id->Pfa) memset (id->Pfa, 0, n); 
+
+	  // Provide execution code to the word to return its Pfa
+  	  byte *bp = new byte[6];
+  	  id->Cfa = bp;
+  	  bp[0] = OP_ADDR;
+  	  *((int*) &bp[1]) = (int) id->Pfa;
+  	  bp[5] = OP_RET;
 	}
       else 
 	return E_V_REALLOT;
@@ -1642,14 +1657,7 @@
   DEC_DSP
   STD_IVAL
   int e = CPP_allot();
-  if (e) return e;
-  WordIndex id = pCompilationWL->end() - 1;
-  byte *bp = new byte[6];
-  id->Cfa = bp;
-  bp[0] = OP_ADDR;
-  *((int*) &bp[1]) = (int) id->Pfa;
-  bp[5] = OP_RET;
-  return 0;
+  return e;
 }
 //-----------------------------------------------------------------
 
@@ -1662,14 +1670,7 @@
   DEC_DSP
   STD_IVAL
   int e = CPP_allot();
-  if (e) return e;
-  WordIndex id = pCompilationWL->end() - 1;
-  byte *bp = new byte[6];
-  id->Cfa = bp;
-  bp[0] = OP_ADDR;
-  *((int*) &bp[1]) = (int) id->Pfa;
-  bp[5] = OP_RET;
-  return 0;  
+  return e;
 }
 //------------------------------------------------------------------
 
@@ -2464,10 +2465,10 @@
   ifstream f(filename);
   if (!f)
     {
-      if (getenv("KFORTH_DIR"))
+      if (getenv(dir_env_var))
 	{
 	  char temp[256]; 
-	  strcpy(temp, getenv("KFORTH_DIR"));
+	  strcpy(temp, getenv(dir_env_var));
 	  strcat(temp, "/");
 	  strcat(temp, filename);
 	  strcpy(filename, temp);