82 lines
2.7 KiB
Plaintext
82 lines
2.7 KiB
Plaintext
# Copyright 2018-2020 Free Software Foundation, Inc.
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# Check whether we can determine the size of an optimized-out vla.
|
|
|
|
standard_testfile
|
|
|
|
# The EXE_SUFFIX is a string appended to the name of the test binary
|
|
# to make it unique per variation.
|
|
# The OPTIONS is a two item list, the first item is a list of compiler
|
|
# flags used for building the test binary, and the second item is a
|
|
# pattern which matches some expected output within this proc.
|
|
proc vla_optimized_out {exe_suffix options} {
|
|
global testfile srcfile
|
|
|
|
lassign $options compile_flags sizeof_result
|
|
|
|
if { [prepare_for_testing "failed to prepare" "$testfile-$exe_suffix" $srcfile \
|
|
$compile_flags] } {
|
|
return -1
|
|
}
|
|
|
|
if ![runto f1] {
|
|
fail "can't run to f1"
|
|
return
|
|
}
|
|
|
|
gdb_test "p a" \
|
|
" = <optimized out>" \
|
|
"printed optimized out vla"
|
|
|
|
gdb_test "p sizeof (a)" \
|
|
" = $sizeof_result" \
|
|
"printed size of optimized out vla"
|
|
|
|
# At lower optimisation levels, the upper bound of the array is
|
|
# still defined, it's just the loctaion that tells GDB the array
|
|
# is optimised out. In that case, when we access an element that
|
|
# is within the bounds of the array an answer of '<optimized out>'
|
|
# is reasonable.
|
|
#
|
|
# At higher optimisation levels, the array bounds themselves have
|
|
# been removed. As such GDB can't be expected to know if the
|
|
# array contains _any_ elements at all. It seems reasonable in
|
|
# that case to reply with 'no such vector element'.
|
|
gdb_test "p a\[0\]" \
|
|
"(= <optimized out>|no such vector element)" \
|
|
"print out of range element of vla (0)"
|
|
|
|
gdb_test "p a\[6\]" \
|
|
"no such vector element" \
|
|
"print out of range element of vla (6)"
|
|
|
|
gdb_test "p a\[0xffffffff\]" \
|
|
"no such vector element" \
|
|
"print out of range element of vla (0xffffffff)"
|
|
}
|
|
|
|
foreach {test_prefix options} \
|
|
{ "o1" {{debug optimize=-O1 additional_flags=-DNOCLONE} "6"} \
|
|
"o3" {{debug optimize=-O3} "<optimized out>|6"} \
|
|
"o3_strict" {{debug optimize=-O3 \
|
|
additional_flags=-gstrict-dwarf} \
|
|
"<optimized out>|6"}} {
|
|
with_test_prefix $test_prefix {
|
|
vla_optimized_out $test_prefix $options
|
|
}
|
|
}
|
|
|