@@ -443,6 +443,10 @@ Wignored-qualifiers
C C++ Var(warn_ignored_qualifiers) Warning EnabledBy(Wextra)
Warn whenever type qualifiers are ignored.
+Wincompatible-pointer-types
+C ObjC Var(warn_incompatible_pointer_types) Init(1) Warning
+Warn when there is a conversion between pointers that have incompatible types
+
Winit-self
C ObjC C++ ObjC++ Var(warn_init_self) Warning LangEnabledBy(C++ ObjC++,Wall)
Warn about variables which are initialized to themselves
@@ -6189,7 +6189,8 @@ convert_for_assignment (location_t location, location_t expr_loc, tree type,
else
/* Avoid warning about the volatile ObjC EH puts on decls. */
if (!objc_ok)
- WARN_FOR_ASSIGNMENT (location, expr_loc, 0,
+ WARN_FOR_ASSIGNMENT (location, expr_loc,
+ OPT_Wincompatible_pointer_types,
G_("passing argument %d of %qE from "
"incompatible pointer type"),
G_("assignment from incompatible pointer type"),
@@ -251,7 +251,7 @@ Objective-C and Objective-C++ Dialects}.
-Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
-Wformat-security -Wformat-signedness -Wformat-y2k @gol
-Wframe-larger-than=@var{len} -Wno-free-nonheap-object -Wjump-misses-init @gol
--Wignored-qualifiers @gol
+-Wignored-qualifiers -Wincompatible-pointer-types @gol
-Wimplicit -Wimplicit-function-declaration -Wimplicit-int @gol
-Winit-self -Winline @gol
-Wno-int-to-pointer-cast -Wno-invalid-offsetof @gol
@@ -4199,14 +4199,19 @@ This option is only active when @option{-ftree-vrp} is active
(default for @option{-O2} and above). It warns about subscripts to arrays
that are always out of bounds. This warning is enabled by @option{-Wall}.
-@item -Wno-discarded-qualifiers
+@item -Wno-discarded-qualifiers @r{(C and Objective-C only)}
@opindex Wno-discarded-qualifiers
@opindex Wdiscarded-qualifiers
Do not warn if type qualifiers on pointers are being discarded.
Typically, the compiler will warn if a @code{const char *} variable is
passed to a function that takes @code{char *} parameter. This option
-can be used to suppress such a warning. This warning is only supported
-for C.
+can be used to suppress such a warning.
+
+@item -Wno-incompatible-pointer-types @r{(C and Objective-C only)}
+@opindex Wno-incompatible-pointer-types
+@opindex Wincompatible-pointer-types
+Do not warn when there is a conversion between pointers that have incompatible
+types.
@item -Wno-div-by-zero
@opindex Wno-div-by-zero
@@ -0,0 +1,21 @@
+/* PR c/58286 */
+/* { dg-do compile } */
+/* { dg-options "-Wno-incompatible-pointer-types" } */
+
+void
+fn2 (short *s, long *l)
+{
+}
+
+unsigned *
+fn1 (void)
+{
+ int (*fpi) (int);
+ int (*fpd) (double) = fpi;
+ fpi = fpd;
+ char *di;
+ float *dp = &di;
+ di = dp;
+ fn2 (dp, di);
+ return dp;
+}