pc_tls fails

[wrwilliams]

No description provided.

[jdetter]

I am passing this on VEX and master:

[root@localhost testsuite]# ./test_driver -test pc_tls
TEST                       COMP   OPT  ABI MODE     THREAD  LINK    PIC     RESULT
pc_tls                     g++    none 64  create   SPST    dynamic nonPIC  PASSED

has this issue been fixed?

[wrwilliams]

Single-process single-thread is not a meaningful test here (the SPST under thread). If you run multithreaded (I think it's -mt, but -test pc_tls -all will get it for sure) you should see a bunch of failures on threads other than the main one; the failure mode has been that each thread grabs the TLS value that we expect from the first one.

[jdetter]

Very interesting. I it appears I actually pass all of the tests on Fedora 23. However, I get a flood of warnings and failures running on the RHEL 6. Seems like another case where Fedora 23 and RHEL6 are not giving us the same behavior.

[root@localhost testsuite]# ./test_driver -all -test pc_tls
TEST                       COMP   OPT  ABI MODE     THREAD  LINK    PIC     RESULT
pc_tls                     g++    none 64  create   SPST    dynamic nonPIC  PASSED
pc_tls                     g++    none 64  create   MPST    dynamic nonPIC  PASSED
pc_tls                     g++    none 64  create   SPMT    dynamic nonPIC  PASSED
pc_tls                     g++    none 64  create   MPMT    dynamic nonPIC  PASSED
pc_tls                     g++    none 64  attach   SPST    dynamic nonPIC  PASSED
pc_tls                     g++    none 64  attach   MPST    dynamic nonPIC  PASSED
pc_tls                     g++    none 64  attach   SPMT    dynamic nonPIC  PASSED
pc_tls                     g++    none 64  attach   MPMT    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  create   SPST    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  create   MPST    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  create   SPMT    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  create   MPMT    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  attach   SPST    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  attach   MPST    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  attach   SPMT    dynamic nonPIC  PASSED
pc_tls                     gcc    none 64  attach   MPMT    dynamic nonPIC  PASSED

[wrwilliams]

Ah, my memory is refreshed: I am failing this in 32-bit mode, where we don't have a working libthreaddb. Closing and opening a testsuite-oriented bug, as it's a problem with the test suite's ability to match "valid mode for test", "valid way to build tests on this system", and "valid way to build this test on this system".