[Bug debug/86456] [8/9 Regression] Segfault in switch_to_section at gcc/varasm.c:7353 since r259317

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86456

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jul 17 12:26:21 2018
New Revision: 262819

URL: https://gcc.gnu.org/viewcvs?rev=262819&root=gcc&view=rev
Log:
2018-07-17  Richard Biener  <rguent...@suse.de>

        PR lto/86456
        * dwarf2out.c (init_sections_and_labels): Always generate
        a debug_line_str_section for early LTO debug.
        (dwarf2out_finish): Reset debug_line_str_hash output early.
        Bump counter for extra dwarf5 .debug_loc labels to not conflict
        with fat LTO part.
        (dwarf2out_early_finish): Output debug_line_str.

        * g++.dg/debug/dwarf2/pr86456.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/debug/dwarf2/pr86456.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dwarf2out.c
    trunk/gcc/testsuite/ChangeLog