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https://github.com/bminor/binutils-gdb.git
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a509c37fed
Before now, we were relying on gcc -B to repoint GCC at our freshly-built linker, and assuming we could use this to run tests that do linker dedup. This is, alas, not reliable (building --with-ld=/an/absolute/path bypasses -B searches for the linker), and we would like the libctf tests in particular to not fail if the compiler uses a linker that cannot deduplicate (simply skipping such tests). Add a new testsuite function that tries to link one of the lookup tests' testcases (which is known to produce conflicting types, i.e. a dict with per-translation-unit children) and then does an objdump and greps it for signs of the per-translation-unit children. If there are none, the linker probably just concatenated the sections: i.e., it is not a linker that can deduplicate CTF. libctf/ PR libctf/33162 * testsuite/config/default.exp (objdump): Introduce. (OBJDUMPFLAGS): Likewise. * testsuite/lib/ctf-lib.exp (check_ctf_linker_dedup): New. * testsuite/libctf-lookup/lookup.exp: Use it. * testsuite/libctf-regression/libctf-repeat-cu.exp: Likewise. * testsuite/libctf-regression/regression.exp: Likewise.
124 lines
3.7 KiB
Plaintext
124 lines
3.7 KiB
Plaintext
# Copyright (C) 2021-2025 Free Software Foundation, Inc.
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#
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# This file is part of the GNU Binutils.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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load_file $srcdir/../../ld/testsuite/lib/ld-lib.exp
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global srcdir subdir OBJDUMP
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global testname
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global subsrcdir
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set subsrcdir "$srcdir/$subdir/"
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set testname "libctf-repeat-cu.exp"
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if ![is_elf_format] {
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unsupported "CTF needs bfd changes to be emitted on non-ELF"
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return 0
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}
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if {![check_ctf_available]} {
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unsupported "no CTF format support in the compiler"
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return 0
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}
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if {![check_ctf_linker_dedup]} {
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unsupported "no CTF deduplication support in the linker"
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return 0
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}
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if {[info exists env(LC_ALL)]} {
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set old_lc_all $env(LC_ALL)
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}
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set env(LC_ALL) "C"
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# Compile one SRC to OBJ and put it into ARCHIVE.
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proc one_lib_compile { src flags obj archive } {
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global CC_FOR_TARGET CFLAGS_FOR_TARGET AR subsrcdir
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if [is_remote host] {
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set src [remote_download host [file join $subsrcdir $src]]
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} else {
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set src [file join $subsrcdir $src]
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}
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set comp_output [prune_warnings [run_host_cmd "$CC_FOR_TARGET" "$CFLAGS_FOR_TARGET $flags -gctf -fPIC -c -o $obj $src"]]
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if { $comp_output != "" } {
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return $comp_output
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}
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set ar_output [prune_warnings [run_host_cmd "$AR" "rc $archive $obj"]]
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return $comp_output
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}
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# Compile one SRC to OBJ and put it into ARCHIVE: error-check the result.
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proc one_lib_compile_check { src flags obj archive } {
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global testname
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set comp_output [one_lib_compile $src $flags $obj $archive]
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if { $comp_output != ""} {
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send_log "compilation of $src with $flags failed with <$comp_output>"
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perror "compilation of $src with $flags failed"
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fail $testname
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return 0
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}
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return 1
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}
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if { ! [one_lib_compile_check libctf-repeat-cu-lib.c "-DINT -DFUN=a" tmpdir/libctf-repeat-cu-lib.o tmpdir/a.a] } {
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return 0
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}
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if { ! [one_lib_compile_check libctf-repeat-cu-lib.c "-DCHAR -DFUN=b" tmpdir/libctf-repeat-cu-lib.o tmpdir/b.a] } {
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return 0
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}
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if { ! [one_lib_compile_check libctf-repeat-cu-lib.c "-DFUN=c" tmpdir/libctf-repeat-cu-lib.o tmpdir/c.a] } {
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return 0
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}
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if [is_remote host] {
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set src [remote_download host [file join $subsrcdir libctf-repeat-cu-main.c]]
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} else {
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set src [file join $subsrcdir libctf-repeat-cu-main.c]
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}
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set comp_output [prune_warnings [run_host_cmd "$CC_FOR_TARGET" "$CFLAGS_FOR_TARGET -gctf -fPIC -shared -o tmpdir/libctf-repeat-cu-main.so $src tmpdir/a.a tmpdir/b.a tmpdir/c.a"]]
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if { $comp_output != "" } {
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send_log "compilation of tmpdir/libctf-repeat-cu-main.so failed"
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perror "compilation of tmpdir/libctf-repeat-cu-main.so failed"
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fail $testname
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return $comp_output
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}
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set comp_output [prune_warnings [run_host_cmd "$OBJDUMP" "--ctf tmpdir/libctf-repeat-cu-main.so > tmpdir/dump.out"]]
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if { [regexp_diff "tmpdir/dump.out" [file join $subsrcdir libctf-repeat-cu.d] ] } {
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fail $testname
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if { $verbose == 2 } then { verbose "output is [file_contents tmpdir/dump.out]" 2 }
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}
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pass $testname
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if {[info exists old_lc_all]} {
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set env(LC_ALL) $old_lc_all
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} else {
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unset env(LC_ALL)
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}
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