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Re: lib/57756: Incorrect order of .fini_array indirect functions calling

The following reply was made to PR lib/57756; it has been noted by GNATS.

From: Dmitry Chestnykh <Dmitry.Chestnykh%kaspersky.com@localhost>
To: "gnats-bugs%NetBSD.org@localhost" <gnats-bugs%NetBSD.org@localhost>
Cc: 
Subject: Re: lib/57756: Incorrect order of .fini_array indirect functions
 calling
Date: Wed, 6 Dec 2023 15:32:27 +0000

 --_000_9e7cfab6087648d990a694526aa34686kasperskycom_
 Content-Type: text/plain; charset="iso-8859-1"
 Content-Transfer-Encoding: quoted-printable
 
 Sorry for the flood, the final patch:
 
 
 diff -Naur lib/csu/common.orig/crt0-common.c lib/csu/common/crt0-common.c
 --- a/lib/csu/common/crt0-common.c      2023-12-05 23:04:36.330759078 +0300
 +++ b/lib/csu/common/crt0-common.c      2023-12-06 17:08:43.037463722 +0300
 @@ -121,8 +121,9 @@
  static void
  _finiarray(void)
  {
 -       for (const fptr_t *f =3D __fini_array_start; f < __fini_array_end; =
 f++) {
 -               (*f)();
 +       size_t i =3D __fini_array_end - __fini_array_start;
 +       while (i-- > 0) {
 +               (*__fini_array_start[i])();
         }
  }
 
 @@ -340,11 +341,13 @@
  #endif
 
         atexit(_finiarray);
 +#ifndef HAVE_INITFINI_ARRAY
 +       _init();
 +#endif
         _initarray();
 
  #ifndef HAVE_INITFINI_ARRAY
         atexit(_fini);
 -       _init();
  #endif
 
         exit(main(ps_strings->ps_nargvstr, ps_strings->ps_argvstr, environ)=
 );
 
 
 
 --_000_9e7cfab6087648d990a694526aa34686kasperskycom_
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 Content-Transfer-Encoding: quoted-printable
 
 <html>
 <head>
 <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
 1">
 <style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi=
 n-bottom:0;} --></style>
 </head>
 <body dir=3D"ltr">
 <div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font=
 -family:Calibri,Helvetica,sans-serif;" dir=3D"ltr">
 <p>Sorry for the flood, the final patch:<br>
 <br>
 </p>
 <div>diff -Naur lib/csu/common.orig/crt0-common.c lib/csu/common/crt0-commo=
 n.c <br>
 --- a/lib/csu/common/crt0-common.c&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2023-12-05=
  23:04:36.330759078 &#43;0300 <br>
 &#43;&#43;&#43; b/lib/csu/common/crt0-common.c&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
 ; 2023-12-06 17:08:43.037463722 &#43;0300 <br>
 @@ -121,8 &#43;121,9 @@ <br>
 &nbsp;static void <br>
 &nbsp;_finiarray(void) <br>
 &nbsp;{ <br>
 -&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (const fptr_t *f =3D __fini_array=
 _start; f &lt; __fini_array_end; f&#43;&#43;) { <br>
 -&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
 bsp;&nbsp; (*f)(); <br>
 &#43;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; size_t i =3D __fini_array_end - _=
 _fini_array_start; <br>
 &#43;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; while (i-- &gt; 0) { <br>
 &#43;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
 p;&nbsp;&nbsp; (*__fini_array_start[i])(); <br>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; } <br>
 &nbsp;} <br>
 &nbsp; <br>
 @@ -340,11 &#43;341,13 @@ <br>
 &nbsp;#endif <br>
 &nbsp; <br>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; atexit(_finiarray); <br>
 &#43;#ifndef HAVE_INITFINI_ARRAY <br>
 &#43;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; _init(); <br>
 &#43;#endif <br>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; _initarray(); <br>
 &nbsp; <br>
 &nbsp;#ifndef HAVE_INITFINI_ARRAY <br>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; atexit(_fini); <br>
 -&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; _init(); <br>
 &nbsp;#endif <br>
 &nbsp; <br>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; exit(main(ps_strings-&gt;ps_narg=
 vstr, ps_strings-&gt;ps_argvstr, environ)); <br>
 <br>
 </div>
 <br>
 <p></p>
 </div>
 </body>
 </html>
 
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