/*
TEST_OUTPUT:
---
-fail_compilation/diag12777.d(14): Error: cannot modify this.v in const function
-fail_compilation/diag12777.d(15): Error: cannot modify this.v in immutable function
-fail_compilation/diag12777.d(21): Error: cannot modify this.v in const function
-fail_compilation/diag12777.d(22): Error: cannot modify this.v in immutable function
+fail_compilation/diag12777.d(14): Error: cannot modify `this.v` in `const` function
+fail_compilation/diag12777.d(15): Error: cannot modify `this.v` in `immutable` function
+fail_compilation/diag12777.d(21): Error: cannot modify `this.v` in `const` function
+fail_compilation/diag12777.d(22): Error: cannot modify `this.v` in `immutable` function
---
*/