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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/98861] I want deterministic exceptions (Herbception)
Date: Thu, 28 Jan 2021 18:24:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98861

--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And memcpy must be provided as documented in the GCC documentation:
Most of the compiler support routines used by GCC are present in
@file{libgcc}, but there are a few exceptions.  GCC requires the
freestanding environment provide @code{memcpy}, @code{memmove},
@code{memset} and @code{memcmp}.
Finally, if @code{__builtin_trap} is used, and the target does
not implement the @code{trap} pattern, then GCC emits a call
to @code{abort}.=