Fixed #1300 clang warning in SWIG_Python_ConvertPtrAndOwn.

1 files changed, 9 insertions, 2 deletions

diff --git a/Lib/swigrun.swg b/Lib/swigrun.swg
index e5afb62c4..3f68d66d6 100644
--- a/Lib/swigrun.swg
+++ b/Lib/swigrun.swg
@@ -161,13 +161,20 @@
 #  endif
 #  define SWIG_CASTRANKMASK          ((SWIG_CASTRANKLIMIT) -1)
 #  define SWIG_CastRank(r)           (r & SWIG_CASTRANKMASK)
-SWIGINTERNINLINE int SWIG_AddCast(int r) { 
-  return SWIG_IsOK(r) ? ((SWIG_CastRank(r) < SWIG_MAXCASTRANK) ? (r + 1) : SWIG_ERROR) : r;
+SWIGINTERNINLINE int SWIG_AddCastInplace(int *r) {
+  if (SWIG_IsOK(*r)) {
+    *r = (SWIG_CastRank(*r) < SWIG_MAXCASTRANK) ? (*r + 1) : SWIG_ERROR;
+  }
+}
+SWIGINTERNINLINE int SWIG_AddCast(int r) {
+  SWIG_AddCastInplace(&r);
+  return r;
 }
 SWIGINTERNINLINE int SWIG_CheckState(int r) { 
   return SWIG_IsOK(r) ? SWIG_CastRank(r) + 1 : 0; 
 }
 #else /* no cast-rank mode */
+#  define SWIG_AddCastInplace(r)
 #  define SWIG_AddCast
 #  define SWIG_CheckState(r) (SWIG_IsOK(r) ? 1 : 0)
 #endif