This is the mail archive of the cygwin-xfree mailing list for the Cygwin XFree86 project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
On 11/16/2014 10:14 AM, Mark Geisert wrote:
Marco Atzeri writes:On 11/16/2014 7:30 AM, Mark Geisert wrote:Marco Atzeri writes:this is the pointer causing the segfault (gdb) p form->form.horiz_base $2 = (Widget) 0x6275705f6779632f while similar pointers have a much smaller address, (gdb) p w $5 = (Widget) 0x60014bd50 so it that an assignment not clearing the upper portion of the pointer.$2 is not a pointer that needed partial clearing, it's a character string "/cyg_pub". Possibly a buffer overrun somewhere? Hope the string fragment points the way to somebody. ..markthanks for the hint, "/cyg_pub" is a directory on the root $ ls -l / |grep pub lrwxrwxrwx 1 marco Administrators 19 Jun 26 19:11 pub -> /cygdrive/e/cyg_pub where the data file was stored, however moving it to "/tmp" produce as result p ref $1 = (Widget) 0x635f7261636e5f62 aka c_racn_b that is not very meaningful to me, so the pointer corruption can be very generic.
I was wrong. It is meaningful (gdb) p form $38 = (FormConstraints) 0x600000003 (gdb) x/20bs 0x600000003 0x600000003: "" 0x600000004: "" 0x600000005: "" 0x600000006: "" 0x600000007: "" 0x600000008: "\023\200" 0x60000000b: "" 0x60000000c: "" 0x60000000d: "" 0x60000000e: "" 0x60000000f: "" 0x600000010: "/tmp/sresa1b_ncar_ccsm3_0_run1_20p/es.nc" 0x600000039: "ht_arrow" 0x600000042: "ow" 0x600000045: "" 0x600000046: "" 0x600000047: "" 0x600000048: "" 0x600000049: "" 0x60000004a: "" So it is a portion of the file name as before, I start to feel that a pointer is not a NULL as should be...
Good Luck,
thanks Marco -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |