Is the current gdb 5.1 broken for Linuxthreads?

H . J . Lu hjl@lucon.org
Mon Sep 17 12:48:00 GMT 2001


Here is a modified example from glibc.

# gcc -g ex11.c -lpthread -lrt -D_GNU_SOURCE
# ./a.out&
# ps -xal | grep a.out
000  1103 27904  3705   9   0 247300 600 rt_sig S    pts/17     0:00 ./a.out
040  1103 27905 27904  11   0 247300 600 do_pol S    pts/17     0:00 ./a.out
040  1103 27906 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27907 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27908 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27909 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27910 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27911 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27912 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27913 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27914 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27915 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27916 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27917 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27918 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27919 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27920 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27921 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27922 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27923 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27924 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27925 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27926 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27927 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27928 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27929 27905   9   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27930 27905  10   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27931 27905  10   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27932 27905  10   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27933 27905  11   0 247300 600 nanosl S    pts/17     0:00 ./a.out
040  1103 27934 27905  10   0 247300 600 nanosl S    pts/17     0:00 ./a.out

# gdb a.out
...
(gdb) att 27934
Attaching to program: /home/hjl/bugs/gdb/thread/./a.out, process 27934
Child process unexpectedly missing: No child processes.

Program terminated with signal ?, Unknown signal.
The program no longer exists.
(gdb)

But

(gdb) att 27904

worked fine. It is a serious regression from gdb 4.18 from RedHat
6.2.


H.J.


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