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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug analyzer/95043] GCC 10 Analyzer and false positive on
 'memcpy(dest, src, count);'
Date: Tue, 02 Mar 2021 21:49:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95043

David Malcolm <dmalcolm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |UNCONFIRMED
     Ever confirmed|1                           |0

--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I can reproduce a warning with the preprocessed source with gcc 10 at -O1 a=
nd
above; stripping out the line-markers with:
  perl -pi -e 's/^#.*\n//g;' idea.ii
I get:
  https://godbolt.org/z/qxehzM

which shows a diagnostic, where (I think) m_array is NULL from
m_fallbackAllocator.allocate, which looks like a valid warning.

With gcc 11, -Wanalyzer-too-complex shows that the analyzer is hitting the
complexity limit and bailing out, without emitting the diagnostic.=