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From: "xinliangli at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/52957] New: Missing suggestions on '=' and '==' confusion
Date: Thu, 12 Apr 2012 22:03:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52957

             Bug #: 52957
           Summary: Missing suggestions on '=' and '==' confusion
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: xinliangli@gmail.com


void foo();
 void bar();
 void test(int i) {
  // ...
 if (i = 42) foo();
  else bar();
 }

 /*

 parentheses1.cpp:5:9: warning: using the result of an assignment as a
condition without parentheses [-Wparentheses]
 if (i = 42) foo();
     ~~^~~~
parentheses1.cpp:5:9: note: place parentheses around the assignment to
silence this warning
 if (i = 42) foo();
       ^
     (     )
parentheses1.cpp:5:9: note: use '==' to turn this assignment into an
equality comparison
 if (i = 42) foo();
       ^
       ==
1 warning generated.

*/