Warn about the use of unparenthesized |= in conditionals (which may be

a typo for !=). Fixes PR9001, from Hans Wennborg!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123836 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 0 deletions

diff --git a/test/SemaCXX/warn-assignment-condition.cpp b/test/SemaCXX/warn-assignment-condition.cpp
index e5a3425804..9dcffbfe84 100644
--- a/test/SemaCXX/warn-assignment-condition.cpp
+++ b/test/SemaCXX/warn-assignment-condition.cpp
@@ -3,6 +3,7 @@
 struct A {
   int foo();
   friend A operator+(const A&, const A&);
+  A operator|=(const A&);
   operator bool();
 };
 
@@ -95,4 +96,13 @@ void test() {
                 // expected-note{{use '==' to turn this assignment into an equality comparison}} \
   // expected-note{{place parentheses around the assignment to silence this warning}}
   for (; (a = b + b); ) {}
+
+  // Compound assignments.
+  if (x |= 2) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \
+                // expected-note{{use '!=' to turn this compound assignment into an inequality comparison}} \
+  // expected-note{{place parentheses around the assignment to silence this warning}}
+
+  if (a |= b) {} // expected-warning {{using the result of an assignment as a condition without parentheses}} \
+                // expected-note{{use '!=' to turn this compound assignment into an inequality comparison}} \
+  // expected-note{{place parentheses around the assignment to silence this warning}}
 }