Fixed a bug which was causing sprintf() to crash.

Added a test for it.
Issue #66


git-svn-id: http://picoc.googlecode.com/svn/trunk@401 21eae674-98b7-11dd-bd71-f92a316d2d60

clibrary.c

@@ -288,15 +288,11 @@ void LibPrintf(struct ParseState *Parser, struct Value *ReturnValue, struct Valu
 void LibSPrintf(struct ParseState *Parser, struct Value *ReturnValue, struct Value **Param, int NumArgs)
 {
     struct OutputStream StrStream;
-    struct Value *DerefVal;
+    
-    int DerefOffset;
-    StrStream.i.Str.WritePos = VariableDereferencePointer(StrStream.i.Str.Parser, Param[0], &DerefVal, &DerefOffset, NULL, NULL);
-
-    if (DerefVal->Typ->Base != TypeArray)
-        ProgramFail(Parser, "can only print to arrays of char");
-        
     StrStream.Putch = &SPutc;
     StrStream.i.Str.Parser = Parser;
+    StrStream.i.Str.WritePos = Param[0]->Val->NativePointer;
+
     GenericPrintf(Parser, ReturnValue, Param+1, NumArgs-1, &StrStream);
     PrintCh(0, &StrStream);
     ReturnValue->Val->NativePointer = *Param;

tests/37_sprintf.c

@@ -0,0 +1,8 @@
+char Buf[100];
+int Count;
+
+for (Count = 1; Count <= 20; Count++)
+{
+    sprintf(Buf, "->%02d<-\n", Count);
+    printf("%s", Buf);
+}

tests/37_sprintf.expect

@@ -0,0 +1,20 @@
+->01<-
+->02<-
+->03<-
+->04<-
+->05<-
+->06<-
+->07<-
+->08<-
+->09<-
+->10<-
+->11<-
+->12<-
+->13<-
+->14<-
+->15<-
+->16<-
+->17<-
+->18<-
+->19<-
+->20<-

tests/Makefile

@@ -29,7 +29,8 @@ TESTS=	00_assignment.test \
 	29_array_address.test \
         34_array_assignment.test \
 	35_sizeof.test \
-	36_array_initialisers.test
+	36_array_initialisers.test \
+        37_sprintf.test
 
 %.test: %.expect %.c
 	@echo Test: $*...