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From: "nrk at disroot dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug analyzer/106620] New: Incorrectly thinks execution can continue
 after a return statement
Date: Mon, 15 Aug 2022 08:55:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106620

            Bug ID: 106620
           Summary: Incorrectly thinks execution can continue after a
                    return statement
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: analyzer
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: nrk at disroot dot org
  Target Milestone: ---

Created attachment 53457
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D53457&action=3Dedit
sample code

Sample code (also attached) : https://godbolt.org/z/ez556Yd39

It thinks that memchr() is being called with null. But if `hay` was null, t=
hen
the function returns, so that's not possible. Removing the `|| nlen =3D=3D =
1`
silences the warning.=