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# Copyright 2018 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/>.
# This file is part of the gdb testsuite
# This tests that C11 _Alignof works in gdb, and that it agrees with
# the compiler.
# The types we're going to test.
set typelist {
char {unsigned char}
short {unsigned short}
int {unsigned int}
long {unsigned long}
{long long} {unsigned long long}
float
double {long double}
}
if {[has_int128_c]} {
# Note we don't check "unsigned __int128" yet because at least gcc
# canonicalizes the name to "__int128 unsigned", and there isn't a
# c-exp.y production for this.
# https://sourceware.org/bugzilla/show_bug.cgi?id=20991
lappend typelist __int128
}
# Create the test file.
set filename [standard_output_file align.c]
set outfile [open $filename w]
# Prologue.
puts -nonewline $outfile "#define DEF(T,U) struct align_pair_ ## T ## _x_ ## U "
puts $outfile "{ T one; U two; }"
puts $outfile "unsigned a_void = _Alignof(void);"
# First emit single items.
foreach type $typelist {
set utype [join [split $type] _]
if {$type != $utype} {
puts $outfile "typedef $type $utype;"
}
puts $outfile "$type item_$utype;"
puts $outfile "unsigned a_$utype\n = _Alignof ($type);"
set utype [join [split $type] _]
}
# Now emit all pairs.
foreach type $typelist {
set utype [join [split $type] _]
foreach inner $typelist {
set uinner [join [split $inner] _]
puts $outfile "DEF ($utype, $uinner);"
set joined "${utype}_x_${uinner}"
puts $outfile "struct align_pair_$joined item_${joined};"
puts $outfile "unsigned a_${joined}"
puts $outfile " = _Alignof (struct align_pair_${joined});"
}
}
# Epilogue.
puts $outfile {
int main() {
return 0;
}
}
close $outfile
standard_testfile $filename
if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug}]} {
return -1
}
if {![runto_main]} {
perror "test suppressed"
return
}
foreach type $typelist {
set utype [join [split $type] _]
set expected [get_integer_valueof a_$utype 0]
gdb_test "print _Alignof($type)" " = $expected"
foreach inner $typelist {
set uinner [join [split $inner] _]
set expected [get_integer_valueof a_${utype}_x_${uinner} 0]
gdb_test "print _Alignof(struct align_pair_${utype}_x_${uinner})" \
" = $expected"
}
}
set expected [get_integer_valueof a_void 0]
gdb_test "print _Alignof(void)" " = $expected"
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