[Bug middle-end/84237] [8 Regression] xen build faiulre only zero initializers are allowed in section '.bss.page_aligned.const'

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84237

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb  9 05:47:24 2018
New Revision: 257513

URL: https://gcc.gnu.org/viewcvs?rev=257513&root=gcc&view=rev
Log:
        PR middle-end/84237
        * output.h (bss_initializer_p): Add NAMED argument, defaulted to false.
        * varasm.c (bss_initializer_p): Add NAMED argument, if true, ignore
        TREE_READONLY bit.
        (get_variable_section): For decls in named .bss* sections pass true as
        second argument to bss_initializer_p.

        * gcc.dg/pr84237.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr84237.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/output.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/varasm.c