http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54487
--- Comment #28 from tejohnson at gcc dot gnu.org 2012-09-13 04:59:18 UTC --- Author: tejohnson Date: Thu Sep 13 04:59:14 2012 New Revision: 191238 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191238 Log: This fixes PR gcov-profile/54487 where the gcda files were not locked by the profile-use read, enabling writes by other instrumented compiles to change the profile in the middle of the profile use read. The GCOV_LOCKED macro was not set because it was guarded by HOST_HAS_F_SETLKW, which was never set. The fix is to add a compile test in the configure to set it. 2012-09-12 Teresa Johnson <tejohn...@google.com> PR gcov-profile/54487 * configure.ac (HOST_HAS_F_SETLKW): Set based on compile test using F_SETLKW with fcntl. * configure, config.in: Regenerate. Modified: trunk/gcc/ChangeLog trunk/gcc/config.in trunk/gcc/configure trunk/gcc/configure.ac
