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* [Bug c++/47734] New: no "comparisons like X<=Y<=Z do not have their mathematical meaning" warning in c++
@ 2011-02-14 16:16 sds at gnu dot org
  2011-02-14 16:20 ` [Bug c++/47734] " manu at gcc dot gnu.org
  2011-03-29 16:45 ` redi at gcc dot gnu.org
  0 siblings, 2 replies; 3+ messages in thread
From: sds at gnu dot org @ 2011-02-14 16:16 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47734

           Summary: no "comparisons like X<=Y<=Z do not have their
                    mathematical meaning" warning in c++
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: sds@gnu.org


gcc issues a warning
comparisons like X<=Y<=Z do not have their mathematical meaning
for code like
if (-2 < -1 < 0) {
 ....
}
but c++ does not.


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug c++/47734] no "comparisons like X<=Y<=Z do not have their mathematical meaning" warning in c++
  2011-02-14 16:16 [Bug c++/47734] New: no "comparisons like X<=Y<=Z do not have their mathematical meaning" warning in c++ sds at gnu dot org
@ 2011-02-14 16:20 ` manu at gcc dot gnu.org
  2011-03-29 16:45 ` redi at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: manu at gcc dot gnu.org @ 2011-02-14 16:20 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47734

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011.02.14 16:16:37
                 CC|                            |manu at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2011-02-14 16:16:37 UTC ---
In gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3

I get the warning for:


int test(void) {
  if(-2 < -1 < 0) { return 0;}
  return 1;
}

g++ -Wall -Wextra test.cc -c
test.cc: In function ‘int test()’:
test.cc:2: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical
meaning

4.1.2 is too old.


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Bug c++/47734] no "comparisons like X<=Y<=Z do not have their mathematical meaning" warning in c++
  2011-02-14 16:16 [Bug c++/47734] New: no "comparisons like X<=Y<=Z do not have their mathematical meaning" warning in c++ sds at gnu dot org
  2011-02-14 16:20 ` [Bug c++/47734] " manu at gcc dot gnu.org
@ 2011-03-29 16:45 ` redi at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: redi at gcc dot gnu.org @ 2011-03-29 16:45 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47734

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |WORKSFORME

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-03-29 16:38:32 UTC ---
fixed in current releases


^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-03-29 16:38 UTC | newest]

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2011-02-14 16:16 [Bug c++/47734] New: no "comparisons like X<=Y<=Z do not have their mathematical meaning" warning in c++ sds at gnu dot org
2011-02-14 16:20 ` [Bug c++/47734] " manu at gcc dot gnu.org
2011-03-29 16:45 ` redi at gcc dot gnu.org

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