[PATCH] D75643: [Sema] Don't emit pointer to int cast warnings under -Wmicrosoft-cast

Arthur Eubanks via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Mon Mar 9 13:31:25 PDT 2020


This revision was automatically updated to reflect the committed changes.
Closed by commit rG51d7f645448b: Don't emit pointer to int cast warnings under -Wmicrosoft-cast (authored by aeubanks).

Changed prior to commit:
  https://reviews.llvm.org/D75643?vs=248306&id=249203#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D75643/new/

https://reviews.llvm.org/D75643

Files:
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/lib/Sema/SemaCast.cpp
  clang/test/Sema/MicrosoftExtensions.c


Index: clang/test/Sema/MicrosoftExtensions.c
===================================================================
--- clang/test/Sema/MicrosoftExtensions.c
+++ clang/test/Sema/MicrosoftExtensions.c
@@ -1,5 +1,4 @@
-// RUN: %clang_cc1 -triple i686-windows %s -fsyntax-only -Wno-unused-value -Wmicrosoft -verify -fms-extensions
-
+// RUN: %clang_cc1 -triple i686-windows %s -fsyntax-only -Wno-unused-value -Wno-pointer-to-int-cast -Wmicrosoft -verify -fms-extensions
 
 struct A
 {
@@ -93,13 +92,13 @@
 };
 
 void pointer_to_integral_type_conv(char* ptr) {
-   char ch = (char)ptr; // expected-warning{{cast to smaller integer type 'char' from 'char *' is a Microsoft extension}}
-   short sh = (short)ptr; // expected-warning{{cast to smaller integer type 'short' from 'char *' is a Microsoft extension}}
-   ch = (char)ptr; // expected-warning{{cast to smaller integer type 'char' from 'char *' is a Microsoft extension}}
-   sh = (short)ptr; // expected-warning{{cast to smaller integer type 'short' from 'char *' is a Microsoft extension}}
+  char ch = (char)ptr;
+  short sh = (short)ptr;
+  ch = (char)ptr;
+  sh = (short)ptr;
 
-   // This is valid ISO C.
-   _Bool b = (_Bool)ptr;
+  // This is valid ISO C.
+  _Bool b = (_Bool)ptr;
 }
 
 typedef struct {
Index: clang/lib/Sema/SemaCast.cpp
===================================================================
--- clang/lib/Sema/SemaCast.cpp
+++ clang/lib/Sema/SemaCast.cpp
@@ -2778,9 +2778,7 @@
       // is undefined. The result need not be in the range of values of any
       // integer type.
       unsigned Diag;
-      if (Self.getLangOpts().MicrosoftExt)
-        Diag = diag::ext_ms_pointer_to_int_cast;
-      else if (SrcType->isVoidPointerType())
+      if (SrcType->isVoidPointerType())
         Diag = DestType->isEnumeralType() ? diag::warn_void_pointer_to_enum_cast
                                           : diag::warn_void_pointer_to_int_cast;
       else if (DestType->isEnumeralType())
Index: clang/include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -3682,9 +3682,6 @@
 def warn_void_pointer_to_enum_cast : Warning<
   warn_void_pointer_to_int_cast.Text>,
   InGroup<VoidPointerToEnumCast>;
-def ext_ms_pointer_to_int_cast : ExtWarn<
-  "cast to smaller integer type %1 from %0 is a Microsoft extension">,
-InGroup<MicrosoftCast>;
 
 def warn_attribute_ignored_for_field_of_type : Warning<
   "%0 attribute ignored for field of type %1">,


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