Turn non-constant constants error into warning.

1 files changed, 3 insertions, 2 deletions

diff --git a/libsolidity/analysis/TypeChecker.cpp b/libsolidity/analysis/TypeChecker.cpp
index 41636db7..8e7ec29b 100644
--- a/libsolidity/analysis/TypeChecker.cpp
+++ b/libsolidity/analysis/TypeChecker.cpp
@@ -484,9 +484,10 @@ bool TypeChecker::visit(VariableDeclaration const& _variable)
 		if (!_variable.value())
 			typeError(_variable.location(), "Uninitialized \"constant\" variable.");
 		else if (!_variable.value()->annotation().isPure)
-			typeError(
+			warning(
 				_variable.value()->location(),
-				"Initial value for constant variable has to be compile-time constant."
+				"Initial value for constant variable has to be compile-time constant. "
+				"This will fail to compile with the next breaking version change."
 			);
 	}
 	if (!_variable.isStateVariable())