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From: Andreas Schwab <schwab@linux-m68k.org>
To: Doug Evans <dje@google.com>
Cc: Pedro Alves <pedro@codesourcery.com>,  gdb-patches@sourceware.org
Subject: Re: Workaround for glibc/BZ5983: following a child fork shows stale  	parent threads in the child.
References: <200905181813.48596.pedro@codesourcery.com> 	<e394668d0905182326r7e481761o28d5445c9362bc05@mail.gmail.com>
X-Yow: NOW, I'm taking the NEXT FLIGHT to ACAPULCO so I can write POEMS about  BROKEN GUITAR STRINGS and sensuous PRE-TEENS!!
Date: Tue, 19 May 2009 09:52:00 -0000
In-Reply-To: <e394668d0905182326r7e481761o28d5445c9362bc05@mail.gmail.com> 	(Doug Evans's message of "Mon, 18 May 2009 23:26:07 -0700")
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Doug Evans <dje@google.com> writes:

> On Mon, May 18, 2009 at 10:13 AM, Pedro Alves <pedro@codesourcery.com> wr=
ote:
>> [...]
>> + =C2=A0 =C2=A0 =C2=A0while (fgets (buf, sizeof (buf), status_file))
>> + =C2=A0 =C2=A0 =C2=A0 {
>> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 if (strncmp (buf, "Tgid:", 5) =3D=3D 0)
>> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 {
>> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 tgid =3D strtoul (buf + strl=
en ("Tgid:"), NULL, 10);
>> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 break;
>> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }
>> + =C2=A0 =C2=A0 =C2=A0 }
>
> This works, but only because of an assumption of the strlen including
> the trailing NUL in "Tgid:" consuming the TAB between "Tgid:" and the
> number.

strlen does not include the trailing NUL, sizeof does.

Andreas.

--=20
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint =3D 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."