tweak error message

kevinushey · kevinushey · commit 84c885aa258a · 2024-06-11T16:02:00.000-07:00
diff --git a/inst/include/Rcpp/vector/traits.h b/inst/include/Rcpp/vector/traits.h
@@ -79,7 +79,7 @@ namespace traits{
 #ifndef RCPP_NO_BOUNDS_CHECK
 		void check_index(R_xlen_t i) const {
 			if (i >= size) {
-				stop("index error");
+				stop("subscript out of bounds (index %s >= vector size %s)", i, size);
 			}
 		}
 #endif

Original file line number	Diff line number	Diff line change
`@@ -79,7 +79,7 @@ namespace traits{`
`79`	`79`	`#ifndef RCPP_NO_BOUNDS_CHECK`
`80`	`80`	`void check_index(R_xlen_t i) const {`
`81`	`81`	`if (i >= size) {`
`82`		`- stop("index error");`
	`82`	`+ stop("subscript out of bounds (index %s >= vector size %s)", i, size);`
`83`	`83`	`}`
`84`	`84`	`}`
`85`	`85`	`#endif`