Merge 8.7. lreplace4 bcc instruction and FLT_MAX fix

1 files changed, 98 insertions, 5 deletions

diff --git a/generic/tclExecute.c b/generic/tclExecute.c
index 444f9aa..e2a2705 100644
--- a/generic/tclExecute.c
+++ b/generic/tclExecute.c
@@ -5034,11 +5034,104 @@ TEBCresume(
 	    NEXT_INST_F(1, 1, 0);
 	}
 
-    /*
-     *	   End of INST_LIST and related instructions.
-     * -----------------------------------------------------------------
-     *	   Start of string-related instructions.
-     */
+    case INST_LREPLACE4:
+	{
+	Tcl_Size numToDelete, numNewElems;
+	int end_indicator;
+	int haveSecondIndex, flags;
+	Tcl_Obj *fromIdxObj, *toIdxObj;
+	opnd = TclGetInt4AtPtr(pc + 1);
+	flags = TclGetInt1AtPtr(pc + 5);
+
+	/* Stack: ... listobj index1 ?index2? new1 ... newN */
+	valuePtr = OBJ_AT_DEPTH(opnd-1);
+
+	/* haveSecondIndex==0 => pure insert */
+	haveSecondIndex = (flags & TCL_LREPLACE4_SINGLE_INDEX) == 0;
+	numNewElems = opnd - 2 - haveSecondIndex;
+
+	/* end_indicator==1 => "end" is last element's index, 0=>index beyond */
+	end_indicator = (flags & TCL_LREPLACE4_END_IS_LAST) != 0;
+	fromIdxObj = OBJ_AT_DEPTH(opnd - 2);
+	toIdxObj = haveSecondIndex ? OBJ_AT_DEPTH(opnd - 3) : NULL;
+	if (Tcl_ListObjLength(interp, valuePtr, &length) != TCL_OK) {
+	    TRACE_ERROR(interp);
+	    goto gotError;
+	}
+
+	DECACHE_STACK_INFO();
+
+	if (TclGetIntForIndexM(
+		interp, fromIdxObj, length - end_indicator, &fromIdx)
+	    != TCL_OK) {
+	    CACHE_STACK_INFO();
+	    TRACE_ERROR(interp);
+	    goto gotError;
+	}
+	if (fromIdx == TCL_INDEX_NONE) {
+	    fromIdx = 0;
+	}
+	else if (fromIdx > length) {
+	    fromIdx = length;
+	}
+	numToDelete = 0;
+	if (toIdxObj) {
+	    if (TclGetIntForIndexM(
+		    interp, toIdxObj, length - end_indicator, &toIdx)
+		!= TCL_OK) {
+		CACHE_STACK_INFO();
+		TRACE_ERROR(interp);
+		goto gotError;
+	    }
+	    if (toIdx != TCL_INDEX_NONE) {
+		if (toIdx > length) {
+		    toIdx = length;
+		}
+		if (toIdx >= fromIdx) {
+		    numToDelete = toIdx - fromIdx + 1;
+		}
+	    }
+	}
+
+	CACHE_STACK_INFO();
+
+	if (Tcl_IsShared(valuePtr)) {
+	    objResultPtr = Tcl_DuplicateObj(valuePtr);
+	    if (Tcl_ListObjReplace(interp,
+				   objResultPtr,
+				   fromIdx,
+				   numToDelete,
+				   numNewElems,
+				   &OBJ_AT_DEPTH(numNewElems - 1))
+		!= TCL_OK) {
+		TRACE_ERROR(interp);
+		Tcl_DecrRefCount(objResultPtr);
+		goto gotError;
+	    }
+	    TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr)));
+	    NEXT_INST_V(6, opnd, 1);
+	}
+	else {
+	    if (Tcl_ListObjReplace(interp,
+				   valuePtr,
+				   fromIdx,
+				   numToDelete,
+				   numNewElems,
+				   &OBJ_AT_DEPTH(numNewElems - 1))
+		!= TCL_OK) {
+		TRACE_ERROR(interp);
+		goto gotError;
+	    }
+	    TRACE_APPEND(("\"%.30s\"\n", O2S(valuePtr)));
+	    NEXT_INST_V(6, opnd - 1, 0);
+	}
+	}
+
+	/*
+	 *	   End of INST_LIST and related instructions.
+	 * -----------------------------------------------------------------
+	 *	   Start of string-related instructions.
+	 */
 
     case INST_STR_EQ:
     case INST_STR_NEQ:		/* String (in)equality check */