[Bug c/84310] -falign-{labels,loops,jumps} with value >= 32768+1 cause a segfault

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84310

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Feb 20 10:04:13 2018
New Revision: 257842

URL: https://gcc.gnu.org/viewcvs?rev=257842&root=gcc&view=rev
Log:
Add limit for maximal alignment options (PR c/84310).

2018-02-20  Martin Liska  <mliska@suse.cz>

        PR c/84310
        PR target/79747
        * final.c (shorten_branches): Build align_tab array with one
        more element.
        * opts.c (finish_options): Add alignment option limit check.
        (MAX_CODE_ALIGN): Likewise.
        (MAX_CODE_ALIGN_VALUE): Likewise.
        * doc/invoke.texi: Document maximum allowed option value for
        all -falign-* options.
2018-02-20  Martin Liska  <mliska@suse.cz>

        PR c/84310
        PR target/79747
        * gcc.target/i386/pr84310.c: New test.
        * gcc.target/i386/pr84310-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr84310-2.c
    trunk/gcc/testsuite/gcc.target/i386/pr84310.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/invoke.texi
    trunk/gcc/final.c
    trunk/gcc/opts.c
    trunk/gcc/testsuite/ChangeLog