re PR c/7652 (-Wswitch-break : Warn if a switch case falls through)

	PR c/7652
gcc/c-family/
	* c-common.c (resolve_overloaded_builtin): Fix formatting.  Add
	FALLTHRU comments.
gcc/c/
	* c-typeck.c (composite_type): Add FALLTHRU comment.
gcc/gcc/cp/
	* error.c (dump_type): Fix falls through comment.
	(dump_decl): Likewise.
	(dump_expr): Likewise.

From-SVN: r239939

6 files changed, 29 insertions, 15 deletions

diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index 2a38deb..8a40f75 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,9 @@
+2016-09-01  Marek Polacek  <polacek@redhat.com>
+
+	PR c/7652
+	* c-common.c (resolve_overloaded_builtin): Fix formatting.  Add
+	FALLTHRU comments.
+
 2016-08-29  Marek Polacek  <polacek@redhat.com>
 
 	PR c/77292
diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c
index b29334a..399ba97 100644
--- a/gcc/c-family/c-common.c
+++ b/gcc/c-family/c-common.c
@@ -11547,7 +11547,7 @@ resolve_overloaded_builtin (location_t loc, tree function,
 	/* Handle these 4 together so that they can fall through to the next
 	   case if the call is transformed to an _N variant.  */
         switch (orig_code)
-	{
+	  {
 	  case BUILT_IN_ATOMIC_EXCHANGE:
 	    {
 	      if (resolve_overloaded_atomic_exchange (loc, function, params,
@@ -11588,17 +11588,15 @@ resolve_overloaded_builtin (location_t loc, tree function,
 	    }
 	  default:
 	    gcc_unreachable ();
-	}
-	/* Fallthrough to the normal processing.  */
+	  }
       }
+      /* FALLTHRU */
     case BUILT_IN_ATOMIC_EXCHANGE_N:
     case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_N:
     case BUILT_IN_ATOMIC_LOAD_N:
     case BUILT_IN_ATOMIC_STORE_N:
-      {
-	fetch_op = false;
-	/* Fallthrough to further processing.  */
-      }
+      fetch_op = false;
+      /* FALLTHRU */
     case BUILT_IN_ATOMIC_ADD_FETCH_N:
     case BUILT_IN_ATOMIC_SUB_FETCH_N:
     case BUILT_IN_ATOMIC_AND_FETCH_N:
@@ -11611,10 +11609,8 @@ resolve_overloaded_builtin (location_t loc, tree function,
     case BUILT_IN_ATOMIC_FETCH_NAND_N:
     case BUILT_IN_ATOMIC_FETCH_XOR_N:
     case BUILT_IN_ATOMIC_FETCH_OR_N:
-      {
-        orig_format = false;
-	/* Fallthru for parameter processing.  */
-      }
+      orig_format = false;
+      /* FALLTHRU */
     case BUILT_IN_SYNC_FETCH_AND_ADD_N:
     case BUILT_IN_SYNC_FETCH_AND_SUB_N:
     case BUILT_IN_SYNC_FETCH_AND_OR_N:
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index 3ac6648..6b00f9a 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,8 @@
+2016-09-01  Marek Polacek  <polacek@redhat.com>
+
+	PR c/7652
+	* c-typeck.c (composite_type): Add FALLTHRU comment.
+
 2016-08-31  David Malcolm  <dmalcolm@redhat.com>
 
 	* c-parser.c (c_parser_declaration_or_fndef): Add trailing space
diff --git a/gcc/c/c-typeck.c b/gcc/c/c-typeck.c
index 5194027..fc7a71e 100644
--- a/gcc/c/c-typeck.c
+++ b/gcc/c/c-typeck.c
@@ -605,8 +605,8 @@ composite_type (tree t1, tree t2)
 
 	t1 = build_function_type (valtype, newargs);
 	t1 = qualify_type (t1, t2);
-	/* ... falls through ...  */
       }
+      /* FALLTHRU */
 
     default:
       return build_type_attribute_variant (t1, attributes);
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c553796..e68ee62 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,10 @@
+2016-09-01  Marek Polacek  <polacek@redhat.com>
+
+	PR c/7652
+	* error.c (dump_type): Fix falls through comment.
+	(dump_decl): Likewise.
+	(dump_expr): Likewise.
+
 2016-08-30  David Malcolm  <dmalcolm@redhat.com>
 
 	* parser.c (cp_parser_enclosed_template_argument_list): Add fix-it
diff --git a/gcc/cp/error.c b/gcc/cp/error.c
index 58cd48c..88049ee 100644
--- a/gcc/cp/error.c
+++ b/gcc/cp/error.c
@@ -575,7 +575,7 @@ dump_type (cxx_pretty_printer *pp, tree t, int flags)
 
     default:
       pp_unsupported_tree (pp, t);
-      /* Fall through to error.  */
+      /* Fall through.  */
 
     case ERROR_MARK:
       pp_string (pp, M_("<type error>"));
@@ -1276,7 +1276,7 @@ dump_decl (cxx_pretty_printer *pp, tree t, int flags)
 
     default:
       pp_unsupported_tree (pp, t);
-      /* Fall through to error.  */
+      /* Fall through.  */
 
     case ERROR_MARK:
       pp_string (pp, M_("<declaration error>"));
@@ -2777,7 +2777,7 @@ dump_expr (cxx_pretty_printer *pp, tree t, int flags)
 	  `report_error_function'.  That could cause an infinite loop.  */
     default:
       pp_unsupported_tree (pp, t);
-      /* fall through to ERROR_MARK...  */
+      /* Fall through.  */
     case ERROR_MARK:
       pp_string (pp, M_("<expression error>"));
       break;