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From: "harald at gigawatt dot nl" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/100731] [11/12 Regression] GCC 11 fails to build using GCC
 4.8 because of missing includes
Date: Tue, 25 May 2021 07:45:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100731

--- Comment #4 from Harald van Dijk <harald at gigawatt dot nl> ---
(In reply to Richard Biener from comment #3)

Yes, including <stdlib.h> is enough to get the build to pass. My last point=
 in
comment #2, however, means that that leaves things in an inconsistent state=
 and
that the right fix depends on what the project wants. There are basically t=
wo
options that look equally reasonable to me: adding an include of <cstdlib>
(and, although not required to fix the build, <cstdio>) and adding std::
qualifiers to everything that needs it, or adding an include of <stdlib.h> =
(and
<stdio.h>) and changing the other existing <c*> includes to <*.h>. Happy to
send a patch for whichever of these is preferred.=