Integer read from stdin yields a value overflow for a valid integer. Here's
the example program:
{{{
program int_range
integer*4 smallest
100 format(1i11)
read(5,100) smallest
print 100,smallest
end
}}}
If compiled and invoked as
{{{
echo -2147483648 | ./int_range
}}}
it yields
{{{
Fortran runtime error: Value overflowed during integer read
}}}
but using -2147483647 works. Shouldn't the most negative integer*4 be
-2^(31-1) = -2147483648 and the largest integer*4 be 2^(32-1)-1 = 2147483647?
Just a note, the largest integer works with this code.
--
Summary: Integer read from stdin yields a value overflow for a
valid integer.
Product: gcc
Version: 4.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: szeliga at colorado dot edu
GCC build triplet: powerpc-apple-darwin8
GCC host triplet: powerpc-apple-darwin8
GCC target triplet: powerpc-apple-darwin8
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36515
