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From: "teawater at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/13978] New: tracepoint condition cannot use string
Date: Fri, 13 Apr 2012 05:26:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=13978

             Bug #: 13978
           Summary: tracepoint condition cannot use string
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: remote
        AssignedTo: unassigned@sourceware.org
        ReportedBy: teawater@gmail.com
    Classification: Unclassified


(gdb) trace vfs_read
During symbol reading, cannot get low and high bounds for subprogram DIE at
21765819.
During symbol reading, Child DIE 0x14c29b6 and its abstract origin 0x14c1ee4
have different parents.
Tracepoint 1 at 0xffffffff8117a220: file
/home/teawater/kernel2/linux/fs/read_write.c, line 365.
(gdb) condition 1 (buf[0] == '1')
(gdb) tstart 
Unsupported operator (null) (52) in expression.
(gdb) list vfs_read
360    }
361    
362    EXPORT_SYMBOL(do_sync_read);
363    
364    ssize_t vfs_read(struct file *file, char __user *buf, size_t count,
loff_t *pos)

condition 1 (buf[0] == (int)'1') can handle this issue.

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