r373743 - [NFCI] Improve the -Wbool-operation's warning message

David Bolvansky via cfe-commits cfe-commits at lists.llvm.org
Fri Oct 4 05:55:13 PDT 2019


Author: xbolva00
Date: Fri Oct  4 05:55:13 2019
New Revision: 373743

URL: http://llvm.org/viewvc/llvm-project?rev=373743&view=rev
Log:
[NFCI] Improve the -Wbool-operation's warning message

Based on the request from the post commit review. Also added one new test.


Modified:
    cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
    cfe/trunk/test/Sema/warn-bitwise-negation-bool.c

Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=373743&r1=373742&r2=373743&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Fri Oct  4 05:55:13 2019
@@ -6638,7 +6638,7 @@ def note_member_declared_here : Note<
 def note_member_first_declared_here : Note<
   "member %0 first declared here">;
 def warn_bitwise_negation_bool : Warning<
-  "bitwise negation of a boolean expression always evaluates to 'true'">,
+  "bitwise negation of a boolean expression; did you mean a logicial negation?">,
   InGroup<DiagGroup<"bool-operation">>;
 def err_decrement_bool : Error<"cannot decrement expression of type bool">;
 def warn_increment_bool : Warning<

Modified: cfe/trunk/test/Sema/warn-bitwise-negation-bool.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/warn-bitwise-negation-bool.c?rev=373743&r1=373742&r2=373743&view=diff
==============================================================================
--- cfe/trunk/test/Sema/warn-bitwise-negation-bool.c (original)
+++ cfe/trunk/test/Sema/warn-bitwise-negation-bool.c Fri Oct  4 05:55:13 2019
@@ -12,9 +12,11 @@ typedef _Bool boolean;
 #endif
 
 void test(boolean b, int i) {
-  b = ~b; // expected-warning {{bitwise negation of a boolean expression always evaluates to 'true'}}
+  b = ~b; // expected-warning {{bitwise negation of a boolean expression; did you mean a logicial negation?}}
   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:7-[[@LINE-1]]:8}:"!"
-  b = ~(b); // expected-warning {{bitwise negation of a boolean expression always evaluates to 'true'}}
+  b = ~(b); // expected-warning {{bitwise negation of a boolean expression; did you mean a logicial negation?}}
   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:7-[[@LINE-1]]:8}:"!"
   b = ~i;
+  i = ~b; // expected-warning {{bitwise negation of a boolean expression; did you mean a logicial negation?}}
+  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:7-[[@LINE-1]]:8}:"!"
 }




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