[Bug math/20715] New: iszero macro breaks existing code

["markus at trippelsdorf dot de" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=20715

            Bug ID: 20715
           Summary: iszero macro breaks existing code
           Product: glibc
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: markus at trippelsdorf dot de
                CC: jsm28 at gcc dot gnu.org
  Target Milestone: ---

sage-7.4 (http://www.sagemath.org/) was released today and I tried
to build it from source on a system running glibc trunk.

The new iszero macro breaks many C/C++ packages that define their own iszero
function.
I had to delete the macro from /usr/include/math.h...

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