diff --git a/clang/lib/Sema/SemaCast.cpp b/clang/lib/Sema/SemaCast.cpp
--- a/clang/lib/Sema/SemaCast.cpp
+++ b/clang/lib/Sema/SemaCast.cpp
@@ -2657,6 +2657,8 @@
     return;
   if (SrcType->isComplexIntegerType() && DestType->isComplexIntegerType())
     return;
+  if (SrcType->isFixedPointType() && DestType->isFixedPointType())
+    return;
 
   Self.Diag(SrcExpr.get()->getExprLoc(),
             diag::warn_bad_function_cast)
diff --git a/clang/test/Sema/warn-bad-function-cast.c b/clang/test/Sema/warn-bad-function-cast.c
--- a/clang/test/Sema/warn-bad-function-cast.c
+++ b/clang/test/Sema/warn-bad-function-cast.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wbad-function-cast -triple x86_64-unknown-unknown -verify
+// RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wbad-function-cast -ffixed-point -triple x86_64-unknown-unknown -verify
 // rdar://9103192
 
 void vf(void);
@@ -12,6 +12,7 @@
 _Bool bf(void);
 char *pf1(void);
 int *pf2(void);
+_Fract ff1(void);
 
 void
 foo(void)
@@ -43,5 +44,10 @@
   (int)bf(); /* expected-warning {{cast from function call of type '_Bool' to non-matching type 'int'}} */
   (__SIZE_TYPE__)pf1(); /* expected-warning {{cast from function call of type 'char *' to non-matching type 'unsigned long'}} */
   (__PTRDIFF_TYPE__)pf2(); /* expected-warning {{cast from function call of type 'int *' to non-matching type 'long'}} */
+
+  (_Fract) if1(); /* expected-warning{{cast from function call of type 'int' to non-matching type '_Fract'}} */
+  ff1();  /* no warning */ 
+  (_Fract)ff1();  /* no warning */ 
+  (int)ff1();  /* expected-warning{{cast from function call of type '_Fract' to non-matching type 'int'}} */ 
 }