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Subject: [Bug fortran/52428] [RFC] I/O: READING of "-huge()-1": Integer overflow
Date: Mon, 14 May 2012 19:43:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52428

--- Comment #9 from Janne Blomqvist <jb at gcc dot gnu.org> 2012-05-14 19:39:27 UTC ---
Author: jb
Date: Mon May 14 19:39:23 2012
New Revision: 187478

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187478
Log:
PR 52428 Range checking when reading integer values.

gcc/fortran ChangeLog:

2012-05-14  Janne Blomqvist  <jb@gcc.gnu.org>

    PR fortran/52428
    * gfortran.texi: Update _gfortran_set_options documentation.
    * invoke.texi: Remove runtime behavior description of
    -fno-range-check.
    * trans-decl.c (create_main_function): Don't pass the range-check
    setting to the library.


libgfortran ChangeLog:

2012-05-14  Janne Blomqvist  <jb@gcc.gnu.org>

    PR fortran/52428
    * io/io.h (max_value): Rename to si_max, remove second argument.
    * io/list_read.c (convert_integer): Use unsigned types when
    parsing the digits, set max value depending on the sign.
    * io/read.c (max_value): Rename to si_max, remove second argument,
    simplify.
    (read_decimal): Set max value depending on sign, always check
    overflow.
    (read_radix): Calculate max unsigned value directly.
    * libgfortran.h (struct compile_options_t): Remove range_check
    field.
    * runtime/compile_options.c (set_options): Skip handling
    options[7].
    (init_compile_options): Don't set removed field.


gcc/testsuite ChangeLog:

2012-05-14  Janne Blomqvist  <jb@gcc.gnu.org>

    PR fortran/52428
    * gfortran.dg/int_range_io_1.f90: New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/int_range_io_1.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/gfortran.texi
    trunk/gcc/fortran/invoke.texi
    trunk/gcc/fortran/trans-decl.c
    trunk/gcc/testsuite/ChangeLog
    trunk/libgfortran/ChangeLog
    trunk/libgfortran/io/io.h
    trunk/libgfortran/io/list_read.c
    trunk/libgfortran/io/read.c
    trunk/libgfortran/libgfortran.h
    trunk/libgfortran/runtime/compile_options.c