It would be better for performance if allocated memory
wouldn't need to be cleared. Doing this for array temporaries
can cost a lot.
Not #defining GFC_CLEAR_MEMORY in memory.c leads to failures,
however:
Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for
target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using /home/ig25/gcc-4.1/gcc/testsuite/config/default.exp as
tool-and-target-specific interface file.
Running /home/ig25/gcc-4.1/gcc/testsuite/gfortran.dg/dg.exp ...
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -O0 execution test
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -O1 execution test
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -O2 execution test
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -O3 -fomit-frame-pointer execution test
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -O3 -fomit-frame-pointer -funroll-loops
executiontest
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions execution test
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -O3 -g execution test
WARNING: program timed out.
FAIL: gfortran.dg/PR19872.f -Os execution test
FAIL: gfortran.dg/backspace.f -O0 execution test
FAIL: gfortran.dg/backspace.f -O1 execution test
FAIL: gfortran.dg/backspace.f -O2 execution test
FAIL: gfortran.dg/backspace.f -O3 -fomit-frame-pointer execution test
FAIL: gfortran.dg/backspace.f -O3 -fomit-frame-pointer -funroll-loops
execution test
FAIL: gfortran.dg/backspace.f -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions execution test
FAIL: gfortran.dg/backspace.f -O3 -g execution test
FAIL: gfortran.dg/backspace.f -Os execution test
FAIL: gfortran.dg/endfile.f90 -O0 execution test
FAIL: gfortran.dg/endfile.f90 -O1 execution test
FAIL: gfortran.dg/endfile.f90 -O2 execution test
FAIL: gfortran.dg/endfile.f90 -O3 -fomit-frame-pointer execution test
FAIL: gfortran.dg/endfile.f90 -O3 -fomit-frame-pointer -funroll-loops
execution test
FAIL: gfortran.dg/endfile.f90 -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions execution test
FAIL: gfortran.dg/endfile.f90 -O3 -g execution test
FAIL: gfortran.dg/endfile.f90 -Os execution test
FAIL: gfortran.dg/eor_handling_4.f90 -O0 execution test
FAIL: gfortran.dg/eor_handling_4.f90 -O1 execution test
FAIL: gfortran.dg/eor_handling_4.f90 -O2 execution test
FAIL: gfortran.dg/eor_handling_4.f90 -O3 -fomit-frame-pointer execution test
FAIL: gfortran.dg/eor_handling_4.f90 -O3 -fomit-frame-pointer -funroll-loops
execution test
FAIL: gfortran.dg/eor_handling_4.f90 -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions execution test
FAIL: gfortran.dg/eor_handling_4.f90 -O3 -g execution test
FAIL: gfortran.dg/eor_handling_4.f90 -Os execution test
WARNING: program timed out.
FAIL: gfortran.dg/inquire_5.f90 -O0 execution test
WARNING: program timed out.
FAIL: gfortran.dg/inquire_5.f90 -O1 execution test
WARNING: program timed out.
FAIL: gfortran.dg/inquire_5.f90 -O2 execution test
WARNING: program timed out.
FAIL: gfortran.dg/inquire_5.f90 -O3 -fomit-frame-pointer execution test
WARNING: program timed out.
FAIL: gfortran.dg/inquire_5.f90 -O3 -fomit-frame-pointer -funroll-loops
execution test
WARNING: program timed out.
FAIL: gfortran.dg/inquire_5.f90 -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions execution test
WARNING: program timed out.
FAIL: gfortran.dg/inquire_5.f90 -O3 -g execution test
(plus maybe a few more, the testsuite hasn't finished yet),
so some parts of the library seem to depend on zeroed memory.
I'll try to isolate these failures and open individual PRs for
them.
Thomas
--
Summary: #undef GFC_CLEAR_MEMORY causes testsuite failures
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
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=21324
