X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fbasic.cpp;h=1aff2e16671edfbd530c06dd6e0392ee35902b01;hp=8baa3536a83d296e78facabc7436d4cdefa46a2e;hb=28e5e38935cc32a4e5f8995645f92f12fedcdaf5;hpb=11c7f91bf740646e78ffa0711ef405aefca96705

diff --git a/ginac/basic.cpp b/ginac/basic.cpp
index 8baa3536..1aff2e16 100644
--- a/ginac/basic.cpp
+++ b/ginac/basic.cpp
@@ -196,9 +196,9 @@ ex & basic::let_op(int i)
 
 ex basic::operator[](const ex & index) const
 {
-	if (is_exactly_of_type(*index.bp,numeric))
-		return op(static_cast<const numeric &>(*index.bp).to_int());
-	
+	if (is_ex_exactly_of_type(index,numeric))
+		return op(ex_to<numeric>(index).to_int());
+
 	throw(std::invalid_argument("non-numeric indices not supported by this type"));
 }