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-rw-r--r--gcc/diagnostic.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/diagnostic.c b/gcc/diagnostic.c
index 56ed9574bb9..687375f517c 100644
--- a/gcc/diagnostic.c
+++ b/gcc/diagnostic.c
@@ -1051,7 +1051,9 @@ int
count_error (warningp)
int warningp;
{
- if (warningp && inhibit_warnings)
+ if (warningp
+ && (inhibit_warnings
+ || (in_system_header && !warn_system_headers)))
return 0;
if (warningp && !warnings_are_errors)