For a number of library functions, the current
tests only check what the compiler does.
Look at this:
$ cat ishft.f90
! { dg-do run }
! verifies basic functioning of the ishft and ishftc intrinsics
if (ishft (1_1, 0) /= 1) call abort
if (ishft (1_1, 1) /= 2) call abort
if (ishft (3_1, 1) /= 6) call abort
if (ishft (-1_1, 1) /= -2) call abort
if (ishft (-1_1, -1) /= 127) call abort
if (ishft (96_1, 2) /= -128) call abort
if (ishft (1_2, 0) /= 1) call abort
if (ishft (1_2, 1) /= 2) call abort
if (ishft (3_2, 1) /= 6) call abort
if (ishft (-1_2, 1) /= -2) call abort
if (ishft (-1_2, -1) /= 32767) call abort
if (ishft (16384_2 + 8192_2, 2) /= -32768_4) call abort
if (ishft (1_4, 0) /= 1) call abort
if (ishft (1_4, 1) /= 2) call abort
if (ishft (3_4, 1) /= 6) call abort
if (ishft (-1_4, 1) /= -2) call abort
if (ishft (-1_4, -1) /= 2147483647) call abort
if (ishft (1073741824_4 + 536870912_4, 2) /= -2147483648_8) call abort
if (ishft (1_8, 0) /= 1) call abort
if (ishft (1_8, 1) /= 2) call abort
if (ishft (3_8, 1) /= 6) call abort
if (ishft (-1_8, 1) /= -2) call abort
if (ishft (-1_8, -60) /= z'F') call abort
if (ishftc (1_1, 0) /= 1) call abort
if (ishftc (1_1, 1) /= 2) call abort
if (ishftc (3_1, 1) /= 6) call abort
if (ishftc (-1_1, 1) /= -1) call abort
if (ishftc (-1_1, -1) /= -1) call abort
if (ishftc (ishftc (96_1, 2), -2) /= 96) call abort
if (ishftc (1_2, 0) /= 1) call abort
if (ishftc (1_2, 1) /= 2) call abort
if (ishftc (3_2, 1) /= 6) call abort
if (ishftc (-1_2, 1) /= -1) call abort
if (ishftc (-1_2, -1) /= -1) call abort
if (ishftc (ishftc (25000_2, 2), -2) /= 25000) call abort
if (ishftc (1_4, 0) /= 1) call abort
if (ishftc (1_4, 1) /= 2) call abort
if (ishftc (3_4, 1) /= 6) call abort
if (ishftc (-1_4, 1) /= -1) call abort
if (ishftc (-1_4, -1) /= -1) call abort
if (ishftc (ishftc (1325876_4, 2), -2) /= 1325876) call abort
if (ishftc (1_8, 0) /= 1) call abort
if (ishftc (1_8, 1) /= 2) call abort
if (ishftc (3_8, 1) /= 6) call abort
if (ishftc (-1_8, 1) /= -1) call abort
if (ishftc (-1_8, -1) /= -1) call abort
if (ishftc (ishftc (1325876_8, 2), -2) /= 1325876) call abort
end
$ gfortran -fdump-tree-original ishft.f90
$ cat ishft.f90.t02.original
MAIN__ ()
{
(void) 0;
$ gfortran -v
Using built-in specs.
Target: ia64-unknown-linux-gnu
Configured with: ../gcc-4.1-20050702/configure --prefix=/home/zfkts --enable-
languages=c,f95
Thread model: posix
gcc version 4.1.0 20050702 (experimental)
We need more test cases that really test the library calls. Chances
are there may be a few more bugs out there like PR 22142 (which was
also hidden by this).
--
Summary: Missing tests for actual library functions
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: libfortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tkoenig at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22307
