https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116701
Bug ID: 116701
Summary: [15 Regression] gfortran.dg/write_check3.f90 suddenly
fails for non-fd_truncate targets
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hp at gcc dot gnu.org
Target Milestone: ---
Target: cris-elf
I investigated my autotester signalling a failure appearing between (good)
r15-3525-gbb8dd0980b39cf and (bad) r15-3528-g6749c69ae143ed, with execution
starting to fail for gfortran.dg/write_check3.f90 as follows:
Running
/netapp/hp3_storage/hp/autotest/hpautotest-gcc1/gcc/gcc/testsuite/gfortran.dg/dg.exp
...
(...other failing tests, but that are not regressions, pruned...)
FAIL: gfortran.dg/write_check3.f90 -O0 execution test
FAIL: gfortran.dg/write_check3.f90 -O1 execution test
FAIL: gfortran.dg/write_check3.f90 -O2 execution test
FAIL: gfortran.dg/write_check3.f90 -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions execution test
FAIL: gfortran.dg/write_check3.f90 -O3 -g execution test
FAIL: gfortran.dg/write_check3.f90 -Os execution test
In the gfortran.log:
PASS: gfortran.dg/write_check3.f90 -O0 (test for excess errors)
spawn cris-elf-run ./write_check3.exe^M
Fortran runtime error: required ftruncate or chsize support not present^M
^M
Error termination. Backtrace:^M
^M
Could not print backtrace: executable file is unexpected ELF class^M
FAIL: gfortran.dg/write_check3.f90 -O0 execution test
I was happy seeing that this was "obviosly" r15-3526 and that I had to change
the first line of write_check3.f90 as "! { dg-do run { target fd_truncate } }"
but doing due diligence I noticed something weird... I can't repeat the
failure!
No matter what I do, this only appears in my autotester. (Trying to replicate
the environment, checking a native build for valgrind-detectable
errors...nothing - at least not yet.) I'll assume PEBKAC, and hope staring at
simulator traces will help, but I need a tracker number. I'll set the
component to target and assign myself so no-one feels compelled to take action.
