[PATCH] Fortran : Don't warn for LOGICAL kind conversion PR96319

[Mark Eggleston]

Please find attached patch for PR96319.

LOGICAL values fit regardless of kind so warnings are unnecessary. The 
PR referred to the warning produced for -Wconversion.  This patch also 
suppresses the warning for -Wconversion-extra.

-Wconversion produces

"Possible change of value in conversion from LOGICAL(4) to LOGICAL(1) ..."

-Wconversion-extra produces

"Conversion from LOGICAL(4) to LOGICAL(1) ..."

Should both warnings be suppressed or just the warning in the original PR?

Note: both messages are missing when -Wconversion -Wconversion-extra are 
used with the gfortran-9 branch.

Fortran  : Don't warn for LOGICAL kind conversion PR96319

LOGICAL values will always fit regardless of kind so there
is no need for warnings.

2020-07-28  Mark Eggleston <markeggleston@gcc.gnu.org>

gcc/fortran/

     PR fortran/96319
     * intrinsic.c (gfc_convert_type_warn):  Add check for
     LOGICAL type so that warnings are not output.

2020-07-28  Mark Eggleston <markeggleston@gcc.gnu.org>

gcc/testsuite/

     PR fortran/96319
     * gfortran.dg/pr96319.f90: New test.

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