deploy: 33f15727ce

api/macros/json_diagnostic_positions.md

@@ -34,6 +34,9 @@ or quotes.
 Note that enabling this macro increases the size of every JSON value by two `std::size_t` fields and adds slight runtime
 overhead to parsing, copying JSON value objects, and the generation of error messages for exceptions. It also causes
 these values to be reported in those error messages.
+In addition, `parse()`, `accept()`, and `sax_parse()` no longer use the
+[faster path for input in one block of memory](../../features/parsing/index.md#input-sources-and-performance), so
+parsing a string or a buffer is slower than without the macro.
 
 If [`JSON_DIAGNOSTICS`](json_diagnostics.md) is also set, the message contains the path and the byte range, such as
 `(/1) (bytes 4-8)`. An exception about the root value has no path and only the range, such as `(bytes 0-4)`.