This might qualify as "obvious".
OK for trunk? (if it passes bootstrap and regrtest)
gcc/c-family/ChangeLog:
* c-indentation.c (warn_for_misleading_indentation): Bail out
immediately if -Wmisleading-indentation isn't enabled.
---
gcc/c-family/c-indentation.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/gcc/c-family/c-indentation.c b/gcc/c-family/c-indentation.c
index 94565f6..9aeebae 100644
--- a/gcc/c-family/c-indentation.c
+++ b/gcc/c-family/c-indentation.c
@@ -373,6 +373,12 @@ warn_for_misleading_indentation (location_t guard_loc,
enum cpp_ttype next_tok_type,
const char *guard_kind)
{
+ /* Early reject for the case where -Wmisleading-indentation is disabled,
+ to avoid doing work only to have the warning suppressed inside the
+ diagnostic machinery. */
+ if (!warn_misleading_indentation)
+ return;
+
if (should_warn_for_misleading_indentation (guard_loc,
body_loc,
next_stmt_loc,
--
1.8.5.3
