--- ./src/backend/jit/llvm/llvmjit_expr.c.orig2	2021-07-21 14:03:40.964827001 +0200
+++ ./src/backend/jit/llvm/llvmjit_expr.c	2021-07-21 14:04:06.709273766 +0200
@@ -2355,7 +2355,7 @@
 				break;

 			case EEOP_IS_JSON:
-				build_EvalXFunc(b, mod, "ExecEvalIsJsonPredicate",
+				build_EvalXFunc(b, mod, "ExecEvalJsonIsPredicate",
 								v_state, op);
 				LLVMBuildBr(b, opblocks[opno + 1]);
 				break;