[Bug fortran/47359] Recursive functions of intrinsic names generates invalid assembler

["tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47359

--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Jun  6 16:12:39 2015
New Revision: 224190

URL: https://gcc.gnu.org/viewcvs?rev=224190&root=gcc&view=rev
Log:
2015-06-06  Thomas Koenig  <tkoenig@netcologne.de>

        PR fortran/47359
        * arith.c (eval_intrinsic_op): Set warn flag for
        gfc_type_convert_binary if -Wconversion or -Wconversion-extra
        are set.
        (wprecision_real_real): New function.
        (wprecision_int_real): New function.
        (gfc_int2int): If -fno-range-check and -Wconversion are specified
        and it is a narrowing conversion, warn.
        (gfc_int2real): If there is a change in value for the conversion,
        warn.
        (gfc_int2complex):  Likewise.
        (gfc_real2int): If there is a fractional part to the real number,
        warn with -Wconversion, otherwise warn with -Wconversion-extra.
        (gfc_real2real): Emit warning if the constant was changed by
        conversion with either -Wconversion or -Wconversion-extra.  With
        -Wconversion-extra, warn if no warning was issued earlier.
        (gfc_real2complex):  Likewise.
        (gfc_complex2int): For -Wconversion or -Wconversion-extra, if
        there was an imaginary part, warn; otherwise, warn for change in
        value.  Warn with -Wconversion-extra if no other warning was
        issued.
        (gfc_complex2real): For -Wconversion or -Wconversion-extra, if
        there was an imaginary part, warn; otherwise, warn for change in
        value. Warn with -Wconversion-extra if no other warning was
        issued.
        (gfc_complex2complex):  For -Wconversion, warn if the value of
        either the real or the imaginary part was changed.  Warn for
        -Wconversion-extra if no prior warning was issued.
        * expr.c (gfc_check_assign):  Remove check for change in value.
        * primary.c (match_real_constant): For -Wconversion-extra, check
        against a number in which the last non-zero digit has been
        replaced with a zero.  If the number compares equal, warn.
        * intrinsic.c (gfc_convert_type_warn):  Do not warn about constant
        conversions.

2015-06-06  Thomas Koenig  <tkoenig@netcologne.de>

        PR fortran/47359
        * gfortran.dg/array_constructor_type_17.f03: Adjust error message.
        * gfortran.dg/warn_conversion.f90: Add warning for change in value
        for assignment.
        * gfortran.dg/warn_conversion_3.f90: Add warnings.
        * gfortran.dg/warn_conversion_5.f90: New test.
        * gfortran.dg/warn_conversion_6.f90: New test.
        * gfortran.dg/warn_conversion_7.f90: New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/warn_conversion_5.f90
    trunk/gcc/testsuite/gfortran.dg/warn_conversion_6.f90
    trunk/gcc/testsuite/gfortran.dg/warn_conversion_7.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/arith.c
    trunk/gcc/fortran/expr.c
    trunk/gcc/fortran/intrinsic.c
    trunk/gcc/fortran/primary.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gfortran.dg/array_constructor_type_17.f03
    trunk/gcc/testsuite/gfortran.dg/warn_conversion.f90
    trunk/gcc/testsuite/gfortran.dg/warn_conversion_3.f90