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Subject: [Bug analyzer/98580] ICE with -fanalyzer when LTO writes out
 error_mark_node for DECL_INITIAL
Date: Thu, 07 Jan 2021 20:46:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98580

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by David Malcolm <dmalcolm@gcc.gnu.org>:

https://gcc.gnu.org/g:0677759f753d321bde52d7343227f842b7e759d2

commit r11-6527-g0677759f753d321bde52d7343227f842b7e759d2
Author: David Malcolm <dmalcolm@redhat.com>
Date:   Thu Jan 7 15:45:29 2021 -0500

    analyzer: fix ICE when DECL_INITIAL is error_mark_node [PR98580]

    lto-streamer-out.c's get_symbol_initial_value can return error_mark_node
    rather than DECL_INITIAL as an optimization to avoid extra sections for
    simple scalar values.

    Add a check to the analyzer to handle such cases gracefully.

    gcc/analyzer/ChangeLog:
            PR analyzer/98580
            * region.cc (decl_region::get_svalue_for_initializer): Graceful=
ly
            handle when LTO writes out DECL_INITIAL as error_mark_node.

    gcc/testsuite/ChangeLog:
            PR analyzer/98580
            * gcc.dg/analyzer/pr98580-a.c: New test.
            * gcc.dg/analyzer/pr98580-b.c: New test.=