invoke.texi: Document -Wint-conversion.

	* doc/invoke.texi: Document -Wint-conversion.
c-family/
	* c.opt (Wint-conversion): New option.
c/
	* c-typeck.c (convert_for_assignment): Pass OPT_Wint_conversion
	instead of 0 to WARN_FOR_ASSIGNMENT.
testsuite/
	* gcc.dg/Wint-conversion.c: New test.

From-SVN: r212193

gcc/ChangeLog

 2014-07-01  Marek Polacek  <polacek@redhat.com>
 
+	* doc/invoke.texi: Document -Wint-conversion.
+
+2014-07-01  Marek Polacek  <polacek@redhat.com>
+
 	PR c/58286
 	* doc/invoke.texi: Document -Wincompatible-pointer-types.
 

gcc/c-family/ChangeLog

 2014-07-01  Marek Polacek  <polacek@redhat.com>
 
+	* c.opt (Wint-conversion): New option.
+
+2014-07-01  Marek Polacek  <polacek@redhat.com>
+
 	PR c/58286
 	* c.opt (Wincompatible-pointer-types): New option.
 

gcc/c-family/c.opt

@@ -474,6 +474,10 @@ Winherited-variadic-ctor
 C++ ObjC++ Var(warn_inh_var_ctor) Init(1) Warning
 Warn about C++11 inheriting constructors when the base has a variadic constructor
 
+Wint-conversion
+C ObjC Var(warn_int_conversion) Init(1) Warning
+Warn about incompatible integer to pointer and pointer to integer conversions
+
 Wint-to-pointer-cast
 C ObjC C++ ObjC++ Var(warn_int_to_pointer_cast) Init(1) Warning
 Warn when there is a cast to a pointer from an integer of a different size

gcc/c/ChangeLog

 2014-07-01  Marek Polacek  <polacek@redhat.com>
 
+	* c-typeck.c (convert_for_assignment): Pass OPT_Wint_conversion
+	instead of 0 to WARN_FOR_ASSIGNMENT.
+
+2014-07-01  Marek Polacek  <polacek@redhat.com>
+
 	PR c/58286
 	* c-typeck.c (convert_for_assignment): Pass
 	OPT_Wincompatible_pointer_types instead of 0 to WARN_FOR_ASSIGNMENT.

gcc/c/c-typeck.c

@@ -6213,7 +6213,8 @@ convert_for_assignment (location_t location, location_t expr_loc, tree type,
 	 or one that results from arithmetic, even including
 	 a cast to integer type.  */
       if (!null_pointer_constant)
-	WARN_FOR_ASSIGNMENT (location, expr_loc, 0,
+	WARN_FOR_ASSIGNMENT (location, expr_loc,
+			     OPT_Wint_conversion,
 			     G_("passing argument %d of %qE makes "
 				"pointer from integer without a cast"),
 			     G_("assignment makes pointer from integer "
@@ -6227,7 +6228,8 @@ convert_for_assignment (location_t location, location_t expr_loc, tree type,
     }
   else if (codel == INTEGER_TYPE && coder == POINTER_TYPE)
     {
-      WARN_FOR_ASSIGNMENT (location, expr_loc, 0,
+      WARN_FOR_ASSIGNMENT (location, expr_loc,
+			   OPT_Wint_conversion,
 			   G_("passing argument %d of %qE makes integer "
 			      "from pointer without a cast"),
 			   G_("assignment makes integer from pointer "

gcc/doc/invoke.texi

@@ -253,7 +253,7 @@ Objective-C and Objective-C++ Dialects}.
 -Wframe-larger-than=@var{len} -Wno-free-nonheap-object -Wjump-misses-init @gol
 -Wignored-qualifiers  -Wincompatible-pointer-types @gol
 -Wimplicit  -Wimplicit-function-declaration  -Wimplicit-int @gol
--Winit-self  -Winline @gol
+-Winit-self  -Winline  -Wno-int-conversion @gol
 -Wno-int-to-pointer-cast -Wno-invalid-offsetof @gol
 -Winvalid-pch -Wlarger-than=@var{len}  -Wunsafe-loop-optimizations @gol
 -Wlogical-op -Wlogical-not-parentheses -Wlong-long @gol
@@ -4214,6 +4214,14 @@ Do not warn when there is a conversion between pointers that have incompatible
 types.  This warning is for cases not covered by @option{-Wno-pointer-sign},
 which warns for pointer argument passing or assignment with different signedness
 
+@item -Wno-int-conversion @r{(C and Objective-C only)}
+@opindex Wno-int-conversion
+@opindex Wint-conversion
+Do not warn about incompatible integer to pointer and pointer to integer
+conversions.  This warning is about implicit conversions; for explicit
+conversions the warnings @option{-Wno-int-to-pointer-cast} and
+@option{-Wno-pointer-to-int-cast} may be used.
+
 @item -Wno-div-by-zero
 @opindex Wno-div-by-zero
 @opindex Wdiv-by-zero

gcc/testsuite/ChangeLog

 2014-07-01  Marek Polacek  <polacek@redhat.com>
 
+	* gcc.dg/Wint-conversion.c: New test.
+
+2014-07-01  Marek Polacek  <polacek@redhat.com>
+
 	PR c/58286
 	* gcc.dg/Wincompatible-pointer-types.c: New test.
 

gcc/testsuite/gcc.dg/Wint-conversion.c

+/* { dg-do compile } */
+/* { dg-options "-Wno-int-conversion" } */
+
+int fn1 (int *), *fn2 (int);
+
+int
+fn1 (int *p)
+{
+  int i = p;
+  i = p;
+  fn2 (p);
+  return p;
+}
+
+int *
+fn2 (int i)
+{
+  int *p = i;
+  p = i;
+  fn1 (i);
+  return i;
+}