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From:	Sam Steingold <sds AT gnu DOT org>
Subject:	isatty bug
Date:	15 Sep 2003 17:19:16 -0400
Organization:	disorganization
Lines:	43
Message-ID:	<usmmxyckr.fsf@gnu.org>
Reply-To:	sds AT gnu DOT org
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X-Attribution:	Sam
X-Disclaimer:	You should not expect anyone to agree with me.
User-Agent:	Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50

calling isatty(0) in a program results in a segfault:

Exception: STATUS_ACCESS_VIOLATION at eip=00000000
eax=00000000 ebx=00000004 ecx=610CEE30 edx=610CEE18 esi=004073B8 edi=0022FECC
ebp=00000400 esp=0022FE00 program=d:\sds\c\scratch.exe
cs=001B ds=0023 es=0023 fs=0038 gs=0000 ss=0023
Stack trace:
Frame     Function  Args
End of stack trace

calling isatty(0) in gdb results in a segfault too:

Exception: STATUS_ACCESS_VIOLATION at eip=610B7374
eax=00000010 ebx=00000010 ecx=00000004 edx=00000000 esi=D0105E51 edi=100F7240
ebp=0022F178 esp=0022F16C program=d:\gnu\cygwin\bin\gdb.exe
cs=001B ds=0023 es=0023 fs=0038 gs=0000 ss=0023
Stack trace:
Frame     Function  Args
0022F178  610B7374  (100F7240, D0105E51, 00000010, 000005EC)
0022F1A8  004A767A  (100F7178, 00000020, D0105E51, 004C26D8)
0022F1C8  004A75C1  (00000020, D0105E51, 00000000, 00000000)
0022F1E8  004B6175  (00000020, 00000000, 00000000, 000005EC)
0022F218  004A5B8D  (100F7178, 00000020, 0022F270, 10292E34)
0022F238  004A5085  (100F7178, 00000020, 0022F270, 0042EF07)
0022F298  004A4F14  (102CB4A8, 004A5050, 100F7178, 0042EF59)
0022F2B8  004A51C5  (102CB4A8, 100F7178, 0022F2E8, 0042DDC0)
0022F2E8  004A5403  (100F7178, FFFFFFE2, 0022F3A8, 004D1F07)
0022F2F8  0049B0A5  (00000001, 61602144, 0022F330, 00A00088)
0022F3A8  004D1F07  (101DBAE8, 00000001, 0022F3DC, 00446EB4)
0022F648  0044712F  (00000000, 102AE3D8, 0022F684, 00000000)
0022F668  004443F6  (00000000, 102AE3D8, 0022F684, 00000000)
0022F688  0044461F  (102AE3D8, 0022F6B8, 00000000, 00000000)
0022F6C8  0047D269  (100C050A, 00000000, 00000001, 00000001)
0022F6E8  0047D2E1  (100C050A, 00000001, 0022F718, 00407A8C)
End of stack trace (more stack frames may be present)



-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
<http://www.camera.org> <http://www.iris.org.il> <http://www.memri.org/>
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If brute force does not work, you are not using enough.


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