[Bug fortran/32594] substring simplification leads to ICE

[fxcoudert at gcc dot gnu dot org]

------- Comment #8 from fxcoudert at gcc dot gnu dot org  2007-08-14 12:44 -------
Subject: Bug 32594

Author: fxcoudert
Date: Tue Aug 14 12:44:19 2007
New Revision: 127478

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=127478
Log:
        PR fortran/32594

        * trans-expr.c (gfc_conv_substring_expr): Only call
        gfc_conv_substring if expr->ref is not NULL.
        * expr.c (gfc_is_constant_expr): If e->ref is NULL, the substring
        expression might be a constant.
        (gfc_simplify_expr): Handle missing start and end, as well as
        missing ref.

        * gfortran.dg/substr_5.f90: New test.

Added:
    trunk/gcc/testsuite/gfortran.dg/substr_5.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/expr.c
    trunk/gcc/fortran/trans-expr.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32594