[Bug ld/26378] sections initialised only by linker scripts are always read/write

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26378

--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=326adec374dd43086dbf9bb2b8f18d547389e678

commit 326adec374dd43086dbf9bb2b8f18d547389e678
Author: Alan Modra <amodra@gmail.com>
Date:   Sat Sep 12 10:49:13 2020 +0930

    PR26378, sections initialised only by linker scripts are always read/write

    This changes the initialisation of output sections so that it is
    possible to create read-only sections fed only from linker script
    BYTE, SHORT, LONG or QUAD.  That currently isn't possible even for one
    of the well-known ELF sections like .rodata, because once a section is
    marked read/write that sticks.  On the other hand if we start
    read-only, well-known ELF sections end up read/write as appropriate.
    For example .tdata will still be SHF_ALLOC + SHF_WRITE + SHF_TLS.

            PR 26378
            * ldlang.c (map_input_to_output_sections): Start with a read-only
            section for data statements.
            * testsuite/ld-elf/size-2.d: Adjust to suit.

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