ifort v11.1.059 (and higher) hangs on program that compiles with v11.1.056 and v10.1.015

[kddevin]

The attached program compiles with ifort v10.1.015. A similar program (from which this one is derived) compiled with ifort v11.1.056. But with v11.1.059, the compilation hangs -- no error message, just a lot of CPU being used and no output. The problem was also confirmed for v11.1.069 and 11.1.072.

Here is the output with v10.1.015 -- all good. Compilation takes about 2 seconds.
$ ifort -logo
Intel Fortran Compiler for applications running on Intel 64, Version 10.1 Build 20080312 Package ID: l_fc_p_10.1.015
Copyright (C) 1985-2008 Intel Corporation. All rights reserved.

$ ifort -c fwrap2.f90
fwrap2.f90(2001): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(2001): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(2001): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(2001): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(2001): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(2001): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1915): (col. 16) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1825): (col. 29) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1825): (col. 29) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1825): (col. 29) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1797): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1797): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1797): (col. 21) remark: LOOP WAS VECTORIZED.
fwrap2.f90(1797): (col. 21) remark: LOOP WAS VECTORIZED.

With v11.1.059, however, the compilation never completes and gives no output:

$ ifort -logo
Intel Fortran Intel 64 Compiler Professional for applications running on Intel 64, Version 11.1 Build 20091012 Package ID: l_cprof_p_11.1.059
Copyright (C) 1985-2009 Intel Corporation. All rights reserved.

$ ifort -c fwrap2.f90

and nothing more.

I assume this is a compiler bug. Where should I report it? Is there a workaround?

Thanks from a newbie.

[Kevin_D_Intel]

Reporting it here is all that's needed and thank you for doing so. It appears the hang occurs in the front-end so I don't have an immediate work-around to offer. I willdig further and also reportit to Development (provide an internal tracking id below) and update this post as I learn more.

(Internal tracking id: DPD200157069)

(Resolution Update on 08/31/2010): This defect is fixed in the Intel Fortran Compiler Professional Edition 11.1 Update 7 (11.1.073 - Linux).

[Kevin_D_Intel]

I confirmed this defect is fixed in our internal 11.1 development compiler. I expect the fix to be in the next 11.1 Update 7 tentatively scheduled for later this month.

[kddevin]

Thank you, Kevin. Is there a way I can try the development compiler on our larger library code? The example I posted was extracted from the library code.

[Kevin_D_Intel]

Unfortunately, no. The compilers are not in packaged form and are somewhat untested. If convenient, I would happily test the larger code if you want to provide that. You can take the thread private and post the code then delete once I have in-hand.

[Kevin_D_Intel]

The 11.1 Update 7 (11.1.073 - Linux) containing this fix is now available from the Intel Registration Center: https://registrationcenter.intel.com