Isolate C++ fallthrough detection.

79fbf118 · Robert Bradshaw · 3694bb81 · 79fbf118
Commit 79fbf118 authored Jul 10, 2017 by Robert Bradshaw
Hide whitespace changes
Inline Side-by-side

Showing with 14 additions and 8 deletions

Cython/Utility/ModuleSetupCode.c Cython/Utility/ModuleSetupCode.c +14 -8

No files found.
--- a/Cython/Utility/ModuleSetupCode.c
+++ b/Cython/Utility/ModuleSetupCode.c
@@ -444,14 +444,20 @@


 #ifndef CYTHON_FALLTHROUGH
-  #if __has_cpp_attribute(fallthrough)
-    #define CYTHON_FALLTHROUGH [[fallthrough]]
-  #elif __has_cpp_attribute(clang::fallthrough)
-    #define CYTHON_FALLTHROUGH [[clang::fallthrough]]
-  #elif __has_attribute(fallthrough) || (defined(__GNUC__) && defined(__attribute__))
-    #define CYTHON_FALLTHROUGH __attribute__((fallthrough))
-  #else
-    #define CYTHON_FALLTHROUGH
+  #ifdef __cplusplus
+    #if __has_cpp_attribute(fallthrough)
+      #define CYTHON_FALLTHROUGH [[fallthrough]]
+    #elif __has_cpp_attribute(clang::fallthrough)
+      #define CYTHON_FALLTHROUGH [[clang::fallthrough]]
+    #endif
+  #endif
+
+  #ifndef CYTHON_FALLTHROUGH
+    #if __has_attribute(fallthrough) || (defined(__GNUC__) && defined(__attribute__))
+      #define CYTHON_FALLTHROUGH __attribute__((fallthrough))
+    #else
+      #define CYTHON_FALLTHROUGH
+    #endif
  #endif
 #endif