http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56641
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jason at gcc dot gnu.org
--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-17
19:24:45 UTC ---
The compiler is working as intended; the warning is there because if E and A
are included in multiple translation units, the A type changes between
translation units, creating an ODR violation. Without the #1 line, the
compiler doesn't warn because the types are being defined in the main input
file rather than an #included file.
