1 files changed, 4 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index 922f4664a9..c6402534ee 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -698,6 +698,10 @@ Documentation
 Build
 -----
 
+- Issue #27659: Prohibit implicit C function declarations: use
+  -Werror=implicit-function-declaration when possible (GCC and Clang, but it
+  depends on the compiler version). Patch written by Chi Hsuan Yen.
+
 - Issue #29384: Remove old Be OS helper scripts.
 
 - Issue #26851: Set Android compilation and link flags.