Package: systemtap
Version: 0.0.20060701-1
Severity: important
GCC 4.0 seems to miscompile the kernel with proper debug information.
This behaviour can be easly verified by trying to run the following
simple systemtap script:
sudo stap -e 'probe syscall.open{print(filename."\n")}'
All filenames will come out as '<unknown>'. If instead of printing the
content of 'filename' you print the value of it's pointer ($filename)
all you'll get is a silly pointer reference to 0x5.
This is not a bug in systemtap, per see, but rather a bug in gcc 4.0.x.
But since this is the default compiler in sid now systemtap should try
to aliviate this issue depending on gcc (version >=4.1) or conflict with
known buggy gcc versions. Perhaps systemtap should be removed from sid
untill gcc 4.1 is available for it.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (990, 'testing')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17-systemtap-1.1
Locale: LANG=pt_BR, LC_CTYPE=pt_BR (charmap=ISO-8859-1)
Versions of packages systemtap depends on:
ii libc6 2.3.6-7 GNU C Library: Shared libraries
ii libgcc1 1:4.1.1-5 GCC support library
ii libglib2.0-0 2.10.2-1 The GLib library of C routines
ii libstdc++6 4.1.1-5 The GNU Standard C++ Library v3
ii sudo 1.6.8p9-2 Provide limited super user privile
systemtap recommends no packages.
-- no debconf information
[]s
Tiago Alves Macambira
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