[LLVMbugs] [Bug 19547] min_element doesn't produce the first minimum element in some cases

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Fri Apr 25 08:51:44 PDT 2014


Marshall Clow (home) <mclow.lists at gmail.com> changed:

           What    |Removed                     |Added
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from Marshall Clow (home) <mclow.lists at gmail.com> ---
There it is:  25.4 [alg.sorting], which lists the requirements for a comparison

p3: For algorithms other than those described in 25.4.3 to work correctly, comp
has to induce a strict weak ordering on the values.

Note that if you pass < (which does induce a strict weak ordering), the current
implementation of min_element returns the correct iterator.

Committed revision 207232 to add tests for this case.

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