https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92956
Bug ID: 92956
Summary: 'libgomp.fortran/examples-4/async_target-2.f90'
offloading compilation regression
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: openmp
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
CC: burnus at gcc dot gnu.org, jakub at gcc dot gnu.org,
msebor at gcc dot gnu.org
Target Milestone: ---
The recent PR91582 "missing heap overflow detection for strcpy", PR92868 "ICE:
tree check: expected integer_cst, have ssa_name" commit r279392 causes a
regression in (all?) OpenMP 'target' offloading compilation testing, for
example with 64-bit nvptx:
@@ -2537,9 +2537,9 @@ PASS: libgomp.fortran/examples-4/async_target-2.f90
-O1 (test for excess erro
PASS: libgomp.fortran/examples-4/async_target-2.f90 -O1 execution test
PASS: libgomp.fortran/examples-4/async_target-2.f90 -O2 (test for excess
errors)
PASS: libgomp.fortran/examples-4/async_target-2.f90 -O2 execution test
[-PASS:-]{+FAIL:+} libgomp.fortran/examples-4/async_target-2.f90 -O3
-fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions
(test for excess errors)
PASS: libgomp.fortran/examples-4/async_target-2.f90 -O3
-fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions
execution test
[-PASS:-]{+FAIL:+} libgomp.fortran/examples-4/async_target-2.f90 -O3 -g
(test for excess errors)
PASS: libgomp.fortran/examples-4/async_target-2.f90 -O3 -g execution
test
PASS: libgomp.fortran/examples-4/async_target-2.f90 -Os (test for excess
errors)
PASS: libgomp.fortran/examples-4/async_target-2.f90 -Os execution test
Note: '-O3' only, and execution testing not affected.
[...]/libgomp.fortran/examples-4/async_target-2.f90: In function
'vec_mult_._omp_fn.2':
[...]/libgomp.fortran/examples-4/async_target-2.f90:34: warning: writing 2
bytes into a region of size 1
[8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-overflow=^G-Wstringop-overflow=8;;^G]
lto1: note: at offset 0 to object 'rank' with size 1 declared here
[...]/libgomp.fortran/examples-4/async_target-2.f90:34: warning: writing 2
bytes into a region of size 1
[8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-overflow=^G-Wstringop-overflow=8;;^G]
lto1: note: at offset 0 to object 'rank' with size 1 declared here
[...]/libgomp.fortran/examples-4/async_target-2.f90:34: warning: writing 2
bytes into a region of size 1
[8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-overflow=^G-Wstringop-overflow=8;;^G]
lto1: note: at offset 0 to object 'rank' with size 1 declared here
[...]/libgomp.fortran/examples-4/async_target-2.f90: In function
'vec_mult_._omp_fn.2':
[...]/libgomp.fortran/examples-4/async_target-2.f90:34: warning: writing 2
bytes into a region of size 1
[8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-overflow=^G-Wstringop-overflow=8;;^G]
lto1: note: at offset 0 to object 'rank' with size 1 declared here
[...]/libgomp.fortran/examples-4/async_target-2.f90:34: warning: writing 2
bytes into a region of size 1
[8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-overflow=^G-Wstringop-overflow=8;;^G]
lto1: note: at offset 0 to object 'rank' with size 1 declared here
[...]/libgomp.fortran/examples-4/async_target-2.f90:34: warning: writing 2
bytes into a region of size 1
[8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstringop-overflow=^G-Wstringop-overflow=8;;^G]
lto1: note: at offset 0 to object 'rank' with size 1 declared here
Similarly for 32-bit Intel MIC (emulated) offloading.
As this cites gfortran internals ("object 'rank'"), tentatively setting
"Component: fortran", and CCing Tobias.
