Check for assignment to constant

This simply checks if the left-hand side is a constant and if so raises
an error.

Fixes bug 771626

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/basic-types/bug771626.test b/tests/basic-types/bug771626.test
new file mode 100644
index 000000000..64a5da8bf
--- /dev/null
+++ b/tests/basic-types/bug771626.test
@@ -0,0 +1,7 @@
+Invalid Code
+
+const int FOO = 0;
+
+void main () {
+	FOO = 1;
+}