bpo-40878: xlc cannot handle C99 extern inline. (GH-21891)

This applies to the default "extc99" mode.  Python does not compile with "stdc99".

(cherry picked from commit 40e700ad042089120456cc2ee79b8ca69479416b)

Authored-by: Stefan Krah <skrah@bytereef.org>

diff --git a/Modules/_decimal/libmpdec/mpdecimal.c b/Modules/_decimal/libmpdec/mpdecimal.c
index ad8db508b36f0a5a098697d9044685c30fff7f0c..28b639ccb405f688aeb24dd06a4db90d4c0e555c 100644 (file)
--- a/Modules/_decimal/libmpdec/mpdecimal.c
+++ b/Modules/_decimal/libmpdec/mpdecimal.c
@@ -64,7 +64,7 @@
 
 #if defined(_MSC_VER)
   #define ALWAYS_INLINE __forceinline
-#elif defined(LEGACY_COMPILER)
+#elif defined(__IBMC__) || defined(LEGACY_COMPILER)
   #define ALWAYS_INLINE
   #undef inline
   #define inline