Import binutils 2.18
[nacl-binutils.git] / ld / testsuite / ld-undefined / undefined.exp
blobe6bf359b50818b5356874d20a5bac40d84df7b52
1 # Test that the linker reports undefined symbol errors correctly.
2 # By Ian Lance Taylor, Cygnus Support
4 # Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
5 # 2007 Free Software Foundation, Inc.
7 # This file is part of the GNU Binutils.
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 3 of the License, or
12 # (at your option) any later version.
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program; if not, write to the Free Software
21 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 # MA 02110-1301, USA.
24 set testund "undefined"
25 set testfn "undefined function"
26 set testline "undefined line"
28 if { [which $CC] == 0 } {
29 verbose "Could not find C compiler!" 1
30 untested $testund
31 untested $testfn
32 untested $testline
33 return
36 if ![ld_compile "$CC -g" $srcdir/$subdir/undefined.c tmpdir/undefined.o] {
37 verbose "Unable to compile test file!" 1
38 unresolved $testund
39 unresolved $testfn
40 unresolved $testline
41 return
44 catch "exec rm -f tmpdir/undefined" exec_output
46 set flags [big_or_little_endian]
48 # Using -e start prevents the SunOS linker from trying to build a
49 # shared library.
50 send_log "$ld -e start $flags -o tmpdir/undefined tmpdir/undefined.o\n"
51 verbose "$ld -e start $flags -o tmpdir/undefined tmpdir/undefined.o"
53 catch "exec $ld -e start $flags -o tmpdir/undefined tmpdir/undefined.o" exec_output
54 send_log "$exec_output\n"
55 verbose "$exec_output"
57 proc checkund { string testname } {
58 global exec_output
60 if [string match "*$string*" $exec_output] {
61 pass $testname
62 } else {
63 fail $testname
67 set mu "undefined reference to `*this_function_is_not_defined'"
68 checkund $mu $testund
70 # ARM PE defaults to using stabs debugging, which we can't handle for
71 # a COFF file.
72 #setup_xfail "arm*-*-pe*"
73 #setup_xfail "thumb*-*-pe*"
75 set mf "tmpdir/undefined.o* In function `function':"
76 checkund $mf $testfn
78 if ![is_elf_format] {
79 # COFF SH gets this test wrong--it reports line 10, because although
80 # the jump is at line 9, the function address, and the reloc, is
81 # stored at the end of the function.
82 setup_xfail "sh-*-*"
84 # ARM PE defaults to using stabs debugging, which we can't handle for
85 # a COFF file.
86 #setup_xfail "arm*-*-pe*"
87 #setup_xfail "thumb*-*-pe*"
90 set ml "undefined.c:9: undefined reference to `*this_function_is_not_defined'"
91 # With targets that use elf/dwarf2, such as the arm-elf and thumb-elf
92 # toolchains, the code in bfd/elf.c:_bfd_elf_find_nearest_line() is called
93 # in order to locate the file name/line number where the undefined
94 # reference occurs. Unfortunately this tries to use the dwarf2 debug
95 # information held in the .debug_info section. This section contains a series
96 # of comp_unit structures, each of which has a low/high address range
97 # representing the span of memory locations covered by that structure. The
98 # structures also index into other structures held in the .debug_line section
99 # and together they can translate memory locations back into file/function/line
100 # number addresses in the source code. Since the information about the memory
101 # region covered by a comp_unit is only determined at link time, the low/high
102 # addresses in the .debug_info section and the line addresses in the .debug_line
103 # section are computed by generating relocs against known symbols in the object
104 # code.
106 # When the undefined reference is detected, the relocs in the dwarf2
107 # debug sections have not yet been resolved, so the low/high addresses and the
108 # line number address are all set at zero. Thus when _bfd_elf_find_nearest_line()
109 # calls _bfd_dwarf2_find_nearest_line() no comp_unit can be found which
110 # actually covers the address where the reference occured, and so
111 # _bfd_elf_find_nearest_line() fails.
113 # The upshot of all of this, is that the error message reported by the
114 # linker, instead of having a source file name & line number as in:
116 # undefined.c:9: undefined reference to `this_function_is_not_defined'
118 # has an object file & section address instead:
120 # undefined.0(.text+0xc): undefined reference to `this_function_is_not_defined'
122 # hence the xfails below.
124 setup_xfail mcore-*-elf
125 setup_xfail mep-*-*
126 setup_xfail mips-sgi-irix6*
127 setup_xfail "sh64-*-*"
129 # The undefined test fails on 31 bit s/390 because the address of the
130 # function `this_function_is_not_defined' is stored in the literal pool of
131 # the function. Therefore the line number in the error message is 8 instead
132 # of 9. On 64 bit s/390 this works because of the new brasl instruction that
133 # doesn't need a literal pool entry.
134 setup_xfail s390-*-*
136 checkund $ml $testline