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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/95276] New: Amusing stringpop-overflow message building
 libgfortran on power9
Date: Fri, 22 May 2020 17:49:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95276

            Bug ID: 95276
           Summary: Amusing stringpop-overflow message building
                    libgfortran on power9
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tkoenig at gcc dot gnu.org
  Target Milestone: ---

Just noted this building libgfortran on powerpc64le-unknown-linux-gnu:

../../../trunk/libgfortran/io/write.c: In Funktion =C2=BBwrite_z=C2=AB:
../../../trunk/libgfortran/io/write.c:1181:6: Warnung: Schreiben von
140735240075856 Byte in eine Region der Gr=C3=B6=C3=9Fe 1 [-Wstringop-overf=
low=3D]
 1181 |   *q =3D '\0';
      |   ~~~^~~~~~

I never thought a single byte could be _that_ big.

The hex number is 0x7fff79fdfa50, which I don't recognize.

This is with trunk dc50686d78d4679b727548c3edc1cb6b0d3b658e.=