Add undefined weak function tests
* testsuite/ld-undefined/weak-fundef.s: New. * testsuite/ld-undefined/weak-undef.t: Don't specify filename. * testsuite/ld-undefined/weak-undef.exp: Run new tests. Rearrange much of old code. Use is_elf_format to select targets.
This commit is contained in:
Alan Modra
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585bc974b1
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@ -1,3 +1,10 @@
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2016-08-12 Alan Modra <amodra@gmail.com>
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* testsuite/ld-undefined/weak-fundef.s: New.
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* testsuite/ld-undefined/weak-undef.t: Don't specify filename.
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* testsuite/ld-undefined/weak-undef.exp: Run new tests. Rearrange
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much of old code. Use is_elf_format to select targets.
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2016-08-11 Alan Modra <amodra@gmail.com>
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PR ld/20436
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@ -0,0 +1,14 @@
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.text
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.weak undef_weak_fun
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.type undef_weak_fun %function
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.ifdef BL
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bl undef_weak_fun
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nop
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.endif
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.ifdef CALLPLT
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call undef_weak_fun@plt
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.endif
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.ifdef HPPA
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bl undef_weak_fun,%r2
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nop
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.endif
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@ -18,67 +18,92 @@
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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set testname "weak undefined symbols"
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# The linker should accept references to undefined weaks without error,
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# and resolve them to zero in a static executable. Ought to work for
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# some a.out targets too.
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set testname "weak undefined data symbols"
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# This test only works for ELF targets. It ought to work for some
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# a.out targets, but it doesn't.
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if { ![istarget *-*-sysv4*] \
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&& ![istarget *-*-unixware*] \
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&& ![istarget *-*-elf*] \
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&& ![istarget *-*-eabi*] \
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&& ![istarget hppa*64*-*-hpux*] \
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&& ![istarget *-*-linux*] \
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&& ![istarget *-*-gnu*] \
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&& ![istarget *-*-nacl*] \
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&& ![istarget *-*-irix5*] \
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&& ![istarget *-*-irix6*] \
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&& ![is_pecoff_format] \
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&& ![istarget *-*-solaris2*] } then {
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if { ![is_elf_format] && ![is_pecoff_format] } then {
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unsupported $testname
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return
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}
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if { [istarget *-*-linux*aout*] \
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|| [istarget *-*-linux*oldld*] } {
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unsupported $testname
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return
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}
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# Weak symbols are broken for non-i386 PE targets.
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if {! [istarget i?86-*-*]} {
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setup_xfail *-*-pe*
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}
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setup_xfail pj-*-*
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if {! [ld_assemble $as $srcdir/$subdir/weak-undef.s tmpdir/weak-undef.o]} then {
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} elseif {![ld_assemble $as $srcdir/$subdir/weak-undef.s \
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tmpdir/weak-undef.o]} then {
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# It's OK if .weak doesn't work on this target.
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unresolved $testname
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return
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}
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# The linker should accept references to undefined weaks without error,
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# and resolve them to zero.
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set output_regexp \
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".*Contents of section .data:.*0000 00000000 11111111.*"
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if {! [ld_simple_link $ld tmpdir/weak-undef "$flags tmpdir/weak-undef.o -T $srcdir/$subdir/weak-undef.t"] } then {
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fail $testname
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} else {
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if {![is_remote host] && [which $objdump] == 0} then {
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unresolved $testname
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return
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} elseif {![ld_simple_link $ld tmpdir/weak-undef \
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"tmpdir/weak-undef.o -T $srcdir/$subdir/weak-undef.t"]} then {
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# Weak symbols are broken for non-i386 PE targets.
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if {! [istarget i?86-*-*]} {
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setup_xfail *-*-pe*
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}
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setup_xfail pj-*-*
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fail $testname
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} elseif {![is_remote host] && [which $objdump] == 0} then {
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unresolved $testname
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} else {
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set exec_output [run_host_cmd "$objdump" "-s tmpdir/weak-undef"]
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set exec_output [prune_warnings $exec_output]
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verbose -log $exec_output
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set output_regexp ".*Contents of section .data:.*0000 00000000 11111111.*"
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if {[regexp $output_regexp $exec_output]} then {
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pass $testname
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} else {
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fail $testname
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}
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}
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# When linking a shared lib, weak undefined symbols should become dynamic.
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set testname "weak undefined function symbols in shared lib"
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set asflags ""
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switch -glob $target_triplet {
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aarch64* -
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arm* -
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powerpc* { set asflags "--defsym BL=1" }
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hppa* { set asflags "--defsym HPPA=1" }
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i\[3-7\]86* -
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x86_64* { set asflags "--defsym CALLPLT=1" }
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}
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if { $asflags == "" || ![is_elf_format] || ![check_shared_lib_support]} then {
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unresolved $testname
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} elseif {![ld_assemble $as "$asflags $srcdir/$subdir/weak-fundef.s" \
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tmpdir/weak-fundef.o]} then {
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fail $testname
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} elseif {![ld_simple_link $ld tmpdir/weak-fundef.so \
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"--shared tmpdir/weak-fundef.o"]} then {
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fail $testname
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} elseif {![is_remote host] && [which $nm] == 0} then {
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unresolved $testname
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} else {
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set exec_output [run_host_cmd "$nm" "-D tmpdir/weak-fundef.so"]
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set exec_output [prune_warnings $exec_output]
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verbose -log $exec_output
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set output_regexp ".*w undef_weak_fun.*"
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if {[regexp $output_regexp $exec_output]} then {
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pass $testname
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} else {
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fail $testname
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}
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# When linking a dynamic executable, weak undefined symbols become dynamic.
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set testname "weak undefined function symbols in dynamic exe"
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if {![ld_simple_link $ld tmpdir/weak-fundef \
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"--no-as-needed tmpdir/weak-fundef.o tmpdir/weak-fundef.so"]} then {
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fail $testname
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} else {
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set exec_output [run_host_cmd "$nm" "-D tmpdir/weak-fundef"]
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set exec_output [prune_warnings $exec_output]
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verbose -log $exec_output
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if {[regexp $output_regexp $exec_output]} then {
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pass $testname
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} else {
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fail $testname
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}
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}
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}
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@ -1,7 +1,7 @@
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SECTIONS
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{
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.data : {
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tmpdir/weak-undef.o(.data)
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*(.data)
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}
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/DISCARD/ : {
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*(*)
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