[Bug fortran/50409] SIGSEGV in gfc_simplify_expr

[fxcoudert at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50409

--- Comment #4 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> 2011-11-08 23:15:16 UTC ---
Author: fxcoudert
Date: Tue Nov  8 23:15:11 2011
New Revision: 181181

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181181
Log:
    PR fortran/50409
    * expr.c (gfc_simplify_expr): Substrings can't have negative
    length.
    * gcc/testsuite/gfortran.dg/string_5.f90: Improve testcase.

Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/expr.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gfortran.dg/string_5.f90