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From: "lipeng.zhu at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/113005] 'libgomp.fortran/rwlock_1.f90',
 'libgomp.fortran/rwlock_3.f90' execution test timeouts
Date: Mon, 25 Dec 2023 07:31:55 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: testsuite
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: testsuite-fail
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X-Bugzilla-Who: lipeng.zhu at intel dot com
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113005

--- Comment #13 from Lipeng Zhu <lipeng.zhu at intel dot com> ---
OK, I think I find the root cause of this error, when thread number greater
than 1000, the file_name =3D 1000_tst.dat, character(11) will overflow. Thi=
s will
generate the same file_name like ***_tst.dat.=20

diff --git a/libgomp/testsuite/libgomp.fortran/rwlock_1.f90
b/libgomp/testsuite/libgomp.fortran/rwlock_1.f90
index f90ecbeb00f..1c271ae031d 100644
--- a/libgomp/testsuite/libgomp.fortran/rwlock_1.f90
+++ b/libgomp/testsuite/libgomp.fortran/rwlock_1.f90
@@ -7,13 +7,12 @@ program main
   use omp_lib
   implicit none
   integer:: unit_number, v1, v2, i
-  character(11) :: file_name
+  character(16) :: file_name
   character(3) :: async =3D "no"
   !$omp parallel private (unit_number, v1, v2, file_name, async, i)
     do i =3D 0, 100
       unit_number =3D 10 + omp_get_thread_num ()
-      write (file_name, "(I3, A)") unit_number, "_tst.dat"
-      file_name =3D adjustl(file_name)
+      write (file_name, "(I5.5, A)") unit_number, "_tst.dat"
       open (unit_number, file=3Dfile_name, asynchronous=3D"yes")
       ! call inquire with file parameter to test find_file in unix.c
       inquire (file=3Dfile_name, asynchronous=3Dasync)=