[Bug gcov-profile/7970] Arc profiling doesn't work reliably on global destructors

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=7970

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Sep 27 11:07:11 2016
New Revision: 240529

URL: https://gcc.gnu.org/viewcvs?rev=240529&root=gcc&view=rev
Log:
gcov: dump in a static dtor instead of in an atexit handler

        PR gcov-profile/7970
        PR gcov-profile/16855
        PR gcov-profile/44779
        * g++.dg/gcov/pr16855.C: New test.
        * coverage.c (build_gcov_exit_decl): New function.
        (coverage_obj_init): Call the function and generate __gcov_exit
        destructor.
        * doc/gcov.texi: Document when __gcov_exit function is called.
        * libgcov-driver.c (__gcov_init): Do not register a atexit
        handler.
        (__gcov_exit): Rename from gcov_exit.
        * libgcov.h (__gcov_exit): Declare.

Added:
    trunk/gcc/testsuite/g++.dg/gcov/pr16855.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/coverage.c
    trunk/gcc/doc/gcov.texi
    trunk/gcc/testsuite/ChangeLog
    trunk/libgcc/ChangeLog
    trunk/libgcc/libgcov-driver.c
    trunk/libgcc/libgcov.h