[Bug c/41935] [4.4/4.5 Regression] ICE : tree check: expected integer_cst, have nop_expr in int_cst_value, at tree.c:8301

[jakub at gcc dot gnu dot org]

------- Comment #6 from jakub at gcc dot gnu dot org  2009-11-06 08:46 -------
Subject: Bug 41935

Author: jakub
Date: Fri Nov  6 08:46:45 2009
New Revision: 153962

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153962
Log:
        PR middle-end/41935
        * c-common.c (fold_offsetof_1) <case ARRAY_REF>: Don't crash for VLAs
        or non-constant index, allow index one past the last element and
        allow exceeding array bound in arrays that might be used as flexible
        array members.

        * gcc.dg/pr41935.c: New test.
        * c-c++-common/pr41935.c: New test.
        * c-c++-common/builtin-offsetof.c (f0): Allow index one past the last
        element.
        * gcc.c-torture/execute/pr41935.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/pr41935.c
    trunk/gcc/testsuite/gcc.c-torture/execute/pr41935.c
    trunk/gcc/testsuite/gcc.dg/pr41935.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-common.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/c-c++-common/builtin-offsetof.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41935