Commit | Line | Data |
---|---|---|
d92f47ae JH |
1 | #!/usr/bin/perl -w |
2 | ||
831ed035 JH |
3 | # Try opening libperl.a with nm, and verifying it has the kind of |
4 | # symbols we expect, and no symbols we should avoid. | |
5 | # | |
aab7f3d5 | 6 | # Fail softly, expect things only on known platforms: |
63b7eadb | 7 | # - linux, x86 only (ppc linux has odd symbol tables) |
aab7f3d5 JH |
8 | # - darwin (OS X), both x86 and ppc |
9 | # - freebsd | |
10 | # and on other platforms, and if things seem odd, just give up (skip_all). | |
d92f47ae | 11 | # |
caea674c JH |
12 | # Debugging tip: nm output (this script's input) can be faked by |
13 | # giving one command line argument for this script: it should be | |
88abe8fb JH |
14 | # either the filename to read, or "-" for STDIN. You can also append |
15 | # "@style" (where style is a supported nm style, like "gnu" or "darwin") | |
16 | # to this filename for "cross-parsing". | |
831ed035 JH |
17 | # |
18 | # Some terminology: | |
19 | # - "text" symbols are code | |
20 | # - "data" symbols are data (duh), with subdivisions: | |
21 | # - "bss": (Block-Started-by-Symbol: originally from IBM assembler...), | |
22 | # uninitialized data, which often even doesn't exist in the object | |
23 | # file as such, only its size does, which is then created on demand | |
24 | # by the loader | |
25 | # - "const": initialized read-only data, like string literals | |
26 | # - "common": uninitialized data unless initialized... | |
27 | # (the full story is too long for here, see "man nm") | |
28 | # - "data": initialized read-write data | |
29 | # (somewhat confusingly below: "data data", but it makes code simpler) | |
30 | # - "undefined": external symbol referred to by an object, | |
31 | # most likely a text symbol. Can be either a symbol defined by | |
32 | # a Perl object file but referred to by other Perl object files, | |
33 | # or a completely external symbol from libc, or other system libraries. | |
d92f47ae JH |
34 | |
35 | BEGIN { | |
36 | chdir 't' if -d 't'; | |
37 | @INC = '../lib'; | |
38 | require "./test.pl"; | |
39 | } | |
40 | ||
41 | use strict; | |
42 | ||
43 | use Config; | |
44 | ||
45 | if ($Config{cc} =~ /g\+\+/) { | |
46 | # XXX Could use c++filt, maybe. | |
47 | skip_all "on g++"; | |
48 | } | |
49 | ||
50 | my $libperl_a; | |
51 | ||
52 | for my $f (qw(../libperl.a libperl.a)) { | |
53 | if (-f $f) { | |
54 | $libperl_a = $f; | |
55 | last; | |
56 | } | |
57 | } | |
58 | ||
59 | unless (defined $libperl_a) { | |
60 | skip_all "no libperl.a"; | |
61 | } | |
62 | ||
cb498e56 | 63 | print "# \$^O = $^O\n"; |
63b7eadb | 64 | print "# \$Config{archname} = $Config{archname}\n"; |
cb498e56 | 65 | print "# \$Config{cc} = $Config{cc}\n"; |
d92f47ae JH |
66 | print "# libperl = $libperl_a\n"; |
67 | ||
68 | my $nm; | |
69 | my $nm_opt = ''; | |
70 | my $nm_style; | |
88abe8fb JH |
71 | my $nm_fh; |
72 | my $nm_err_tmp = "libperl$$"; | |
73 | ||
74 | END { | |
75 | # this is still executed when we skip_all above, avoid a warning | |
76 | unlink $nm_err_tmp if $nm_err_tmp; | |
77 | } | |
78 | ||
79 | my $fake_input; | |
80 | my $fake_style; | |
81 | ||
82 | if (@ARGV == 1) { | |
83 | $fake_input = shift @ARGV; | |
84 | print "# Faking nm output from $fake_input\n"; | |
85 | if ($fake_input =~ s/\@(.+)$//) { | |
86 | $fake_style = $1; | |
87 | print "# Faking nm style from $fake_style\n"; | |
aab7f3d5 JH |
88 | if ($fake_style eq 'gnu' || |
89 | $fake_style eq 'linux' || | |
90 | $fake_style eq 'freebsd') { | |
88abe8fb JH |
91 | $nm_style = 'gnu' |
92 | } elsif ($fake_style eq 'darwin' || $fake_style eq 'osx') { | |
93 | $nm_style = 'darwin' | |
94 | } else { | |
95 | die "$0: Unknown explicit nm style '$fake_style'\n"; | |
96 | } | |
97 | } | |
98 | } | |
99 | ||
100 | unless (defined $nm_style) { | |
101 | if ($^O eq 'linux') { | |
aab7f3d5 JH |
102 | # The 'gnu' style could be equally well be called 'bsd' style, |
103 | # since the output format of the GNU binutils nm is really BSD. | |
104 | $nm_style = 'gnu'; | |
105 | } elsif ($^O eq 'freebsd') { | |
88abe8fb JH |
106 | $nm_style = 'gnu'; |
107 | } elsif ($^O eq 'darwin') { | |
108 | $nm_style = 'darwin'; | |
109 | } | |
110 | } | |
d92f47ae | 111 | |
88abe8fb JH |
112 | if (defined $nm_style) { |
113 | if ($nm_style eq 'gnu') { | |
114 | $nm = '/usr/bin/nm'; | |
115 | } elsif ($nm_style eq 'darwin') { | |
116 | $nm = '/usr/bin/nm'; | |
117 | # With the -m option we get better information than the BSD-like | |
118 | # default: with the default, a lot of symbols get dumped into 'S' | |
119 | # or 's', for example one cannot tell the difference between const | |
120 | # and non-const data symbols. | |
121 | $nm_opt = '-m'; | |
122 | } else { | |
123 | die "$0: Unexpected nm style '$nm_style'\n"; | |
124 | } | |
d92f47ae JH |
125 | } |
126 | ||
a1b6fca3 | 127 | if ($^O eq 'linux' && $Config{archname} !~ /^(?:x|i6)86/) { |
63b7eadb JH |
128 | # For example in ppc most (but not all!) code symbols are placed |
129 | # in 'D' (data), not in ' T '. We cannot work under such conditions. | |
130 | skip_all "linux but archname $Config{archname} not x86*"; | |
131 | } | |
132 | ||
d92f47ae JH |
133 | unless (defined $nm) { |
134 | skip_all "no nm"; | |
135 | } | |
136 | ||
137 | unless (defined $nm_style) { | |
138 | skip_all "no nm style"; | |
139 | } | |
140 | ||
141 | print "# nm = $nm\n"; | |
142 | print "# nm_style = $nm_style\n"; | |
143 | print "# nm_opt = $nm_opt\n"; | |
144 | ||
145 | unless (-x $nm) { | |
146 | skip_all "no executable nm $nm"; | |
147 | } | |
148 | ||
88abe8fb JH |
149 | if ($nm_style eq 'gnu' && !defined $fake_style) { |
150 | open(my $gnu_verify, "$nm --version|") or | |
d92f47ae JH |
151 | skip_all "nm failed: $!"; |
152 | my $gnu_verified; | |
88abe8fb | 153 | while (<$gnu_verify>) { |
d92f47ae JH |
154 | if (/^GNU nm/) { |
155 | $gnu_verified = 1; | |
156 | last; | |
157 | } | |
158 | } | |
159 | unless ($gnu_verified) { | |
f7bdd0be | 160 | skip_all "no GNU nm"; |
d92f47ae JH |
161 | } |
162 | } | |
163 | ||
88abe8fb JH |
164 | if (defined $fake_input) { |
165 | if ($fake_input eq '-') { | |
caea674c JH |
166 | open($nm_fh, "<&STDIN") or |
167 | skip_all "Duping STDIN failed: $!"; | |
168 | } else { | |
88abe8fb JH |
169 | open($nm_fh, "<", $fake_input) or |
170 | skip_all "Opening '$fake_input' failed: $!"; | |
caea674c JH |
171 | } |
172 | undef $nm_err_tmp; # In this case there will be no nm errors. | |
173 | } else { | |
1ee983f5 | 174 | print qq{# command: "$nm $nm_opt $libperl_a 2>$nm_err_tmp |"\n}; |
caea674c JH |
175 | open($nm_fh, "$nm $nm_opt $libperl_a 2>$nm_err_tmp |") or |
176 | skip_all "$nm $nm_opt $libperl_a failed: $!"; | |
177 | } | |
831ed035 JH |
178 | |
179 | sub is_perlish_symbol { | |
180 | $_[0] =~ /^(?:PL_|Perl|PerlIO)/; | |
181 | } | |
182 | ||
88abe8fb JH |
183 | # XXX Implement "internal test" for this script (option -t?) |
184 | # to verify that the parsing does what it's intended to. | |
185 | ||
d92f47ae JH |
186 | sub nm_parse_gnu { |
187 | my $symbols = shift; | |
7c616f70 | 188 | my $line = $_; |
d92f47ae | 189 | if (m{^(\w+\.o):$}) { |
68472ab1 | 190 | # object file name |
d92f47ae JH |
191 | $symbols->{obj}{$1}++; |
192 | $symbols->{o} = $1; | |
7c616f70 | 193 | return; |
d92f47ae | 194 | } else { |
7c616f70 JH |
195 | die "$0: undefined current object: $line" |
196 | unless defined $symbols->{o}; | |
68472ab1 | 197 | # 64-bit systems have 16 hexdigits, 32-bit systems have 8. |
7c616f70 JH |
198 | if (s/^[0-9a-f]{8}(?:[0-9a-f]{8})? //) { |
199 | if (/^[Rr] (\w+)$/) { | |
68472ab1 | 200 | # R: read only (const) |
7c616f70 JH |
201 | $symbols->{data}{const}{$1}{$symbols->{o}}++; |
202 | } elsif (/^r .+$/) { | |
68472ab1 | 203 | # Skip local const (read only). |
3faa8758 JH |
204 | } elsif (/^([Tti]) (\w+)(\..+)?$/) { |
205 | $symbols->{text}{$2}{$symbols->{o}}{$1}++; | |
7c616f70 JH |
206 | } elsif (/^C (\w+)$/) { |
207 | $symbols->{data}{common}{$1}{$symbols->{o}}++; | |
208 | } elsif (/^[BbSs] (\w+)(\.\d+)?$/) { | |
68472ab1 JH |
209 | # Bb: uninitialized data (bss) |
210 | # Ss: uninitialized data "for small objects" | |
7c616f70 | 211 | $symbols->{data}{bss}{$1}{$symbols->{o}}++; |
4613f3c1 | 212 | } elsif (/^D _LIB_VERSION$/) { |
68472ab1 | 213 | # Skip the _LIB_VERSION (not ours, probably libm) |
7c616f70 | 214 | } elsif (/^[DdGg] (\w+)$/) { |
68472ab1 JH |
215 | # Dd: initialized data |
216 | # Gg: initialized "for small objects" | |
7c616f70 JH |
217 | $symbols->{data}{data}{$1}{$symbols->{o}}++; |
218 | } elsif (/^. \.?(\w+)$/) { | |
219 | # Skip the unknown types. | |
220 | print "# Unknown type: $line ($symbols->{o})\n"; | |
221 | } | |
222 | return; | |
831ed035 JH |
223 | } elsif (/^ {8}(?: {8})? U _?(\w+)$/) { |
224 | my ($symbol) = $1; | |
225 | return if is_perlish_symbol($symbol); | |
226 | $symbols->{undef}{$symbol}{$symbols->{o}}++; | |
7c616f70 | 227 | return; |
d92f47ae JH |
228 | } |
229 | } | |
7c616f70 | 230 | print "# Unexpected nm output '$line' ($symbols->{o})\n"; |
d92f47ae JH |
231 | } |
232 | ||
233 | sub nm_parse_darwin { | |
234 | my $symbols = shift; | |
7c616f70 | 235 | my $line = $_; |
68472ab1 JH |
236 | if (m{^(?:.+)?libperl\.a\((\w+\.o)\):$}) { |
237 | # object file name | |
d92f47ae JH |
238 | $symbols->{obj}{$1}++; |
239 | $symbols->{o} = $1; | |
7c616f70 | 240 | return; |
d92f47ae | 241 | } else { |
7c616f70 | 242 | die "$0: undefined current object: $line" unless defined $symbols->{o}; |
68472ab1 | 243 | # 64-bit systems have 16 hexdigits, 32-bit systems have 8. |
7c616f70 | 244 | if (s/^[0-9a-f]{8}(?:[0-9a-f]{8})? //) { |
68472ab1 JH |
245 | # String literals can live in different sections |
246 | # depending on the compiler and os release, assumedly | |
247 | # also linker flags. | |
dc882775 | 248 | if (/^\(__TEXT,__(?:const|(?:asan_)?cstring|literal\d+)\) (?:non-)?external _?(\w+)(\.\w+)?$/) { |
7c616f70 JH |
249 | my ($symbol, $suffix) = ($1, $2); |
250 | # Ignore function-local constants like | |
251 | # _Perl_av_extend_guts.oom_array_extend | |
252 | return if defined $suffix && /__TEXT,__const/; | |
6d1ca00b JH |
253 | # Ignore the cstring unnamed strings. |
254 | return if $symbol =~ /^L\.str\d+$/; | |
7c616f70 | 255 | $symbols->{data}{const}{$symbol}{$symbols->{o}}++; |
3faa8758 JH |
256 | } elsif (/^\(__TEXT,__text\) ((?:non-)?external) _(\w+)$/) { |
257 | my ($exp, $sym) = ($1, $2); | |
258 | $symbols->{text}{$sym}{$symbols->{o}}{$exp =~ /^non/ ? 't' : 'T'}++; | |
de36638a | 259 | } elsif (/^\(__DATA,__\w*?(const|data|bss|common)\w*\) (?:non-)?external _?(\w+)(\.\w+)?$/) { |
7c616f70 JH |
260 | my ($dtype, $symbol, $suffix) = ($1, $2, $3); |
261 | # Ignore function-local constants like | |
262 | # _Perl_pp_gmtime.dayname | |
263 | return if defined $suffix; | |
264 | $symbols->{data}{$dtype}{$symbol}{$symbols->{o}}++; | |
265 | } elsif (/^\(__DATA,__const\) non-external _\.memset_pattern\d*$/) { | |
266 | # Skip this, whatever it is (some inlined leakage from | |
267 | # darwin libc?) | |
6d1ca00b | 268 | } elsif (/^\(__TEXT,__eh_frame/) { |
68472ab1 | 269 | # Skip the eh_frame (exception handling) symbols. |
6d1ca00b | 270 | return; |
7c616f70 JH |
271 | } elsif (/^\(__\w+,__\w+\) /) { |
272 | # Skip the unknown types. | |
273 | print "# Unknown type: $line ($symbols->{o})\n"; | |
274 | } | |
275 | return; | |
831ed035 | 276 | } elsif (/^ {8}(?: {8})? \(undefined(?: \[lazy bound\])?\) external _?(.+)/) { |
68472ab1 JH |
277 | # darwin/ppc marks most undefined text symbols |
278 | # as "[lazy bound]". | |
18d04e70 | 279 | my ($symbol) = $1 =~ s/\$UNIX2003\z//r; |
831ed035 JH |
280 | return if is_perlish_symbol($symbol); |
281 | $symbols->{undef}{$symbol}{$symbols->{o}}++; | |
7c616f70 | 282 | return; |
d92f47ae JH |
283 | } |
284 | } | |
7c616f70 | 285 | print "# Unexpected nm output '$line' ($symbols->{o})\n"; |
d92f47ae JH |
286 | } |
287 | ||
288 | my $nm_parse; | |
289 | ||
290 | if ($nm_style eq 'gnu') { | |
291 | $nm_parse = \&nm_parse_gnu; | |
292 | } elsif ($nm_style eq 'darwin') { | |
293 | $nm_parse = \&nm_parse_darwin; | |
294 | } | |
295 | ||
296 | unless (defined $nm_parse) { | |
cb498e56 | 297 | skip_all "no nm parser ($nm_style $nm_style, \$^O $^O)"; |
d92f47ae JH |
298 | } |
299 | ||
300 | my %symbols; | |
301 | ||
302 | while (<$nm_fh>) { | |
303 | next if /^$/; | |
304 | chomp; | |
305 | $nm_parse->(\%symbols); | |
306 | } | |
307 | ||
308 | # use Data::Dumper; print Dumper(\%symbols); | |
309 | ||
2c93157d JH |
310 | # Something went awfully wrong. Wrong nm? Wrong options? |
311 | unless (keys %symbols) { | |
d92f47ae JH |
312 | skip_all "no symbols\n"; |
313 | } | |
2c93157d JH |
314 | unless (exists $symbols{text}) { |
315 | skip_all "no text symbols\n"; | |
316 | } | |
d92f47ae JH |
317 | |
318 | # These should always be true for everyone. | |
319 | ||
2287d330 TK |
320 | ok($symbols{obj}{'util.o'}, "has object util.o"); |
321 | ok($symbols{text}{'Perl_croak'}{'util.o'}, "has text Perl_croak in util.o"); | |
d92f47ae JH |
322 | ok(exists $symbols{data}{const}, "has data const symbols"); |
323 | ok($symbols{data}{const}{PL_no_mem}{'globals.o'}, "has PL_no_mem"); | |
324 | ||
d88a9086 | 325 | my $nocommon = $Config{ccflags} =~ /-fno-common/ ? 1 : 0; |
d92f47ae | 326 | |
d88a9086 | 327 | print "# nocommon = $nocommon\n"; |
d92f47ae JH |
328 | |
329 | my %data_symbols; | |
330 | ||
331 | for my $dtype (sort keys %{$symbols{data}}) { | |
332 | for my $symbol (sort keys %{$symbols{data}{$dtype}}) { | |
333 | $data_symbols{$symbol}++; | |
334 | } | |
335 | } | |
336 | ||
8c3a0f6c DIM |
337 | if ( !$symbols{data}{common} ) { |
338 | # This is likely because Perl was compiled with | |
339 | # -Accflags="-fno-common" | |
340 | $symbols{data}{common} = $symbols{data}{bss}; | |
d92f47ae JH |
341 | } |
342 | ||
f43079cb | 343 | ok($symbols{data}{common}{PL_hash_seed_w}{'globals.o'}, "has PL_hash_seed_w"); |
8c3a0f6c DIM |
344 | ok($symbols{data}{data}{PL_ppaddr}{'globals.o'}, "has PL_ppaddr"); |
345 | ||
182bc989 JH |
346 | # See the comments in the beginning for what "undefined symbols" |
347 | # really means. We *should* have many of those, that is a good thing. | |
831ed035 JH |
348 | ok(keys %{$symbols{undef}}, "has undefined symbols"); |
349 | ||
182bc989 JH |
350 | # There are certain symbols we expect to see. |
351 | ||
0fa5dd23 JH |
352 | # chmod, socket, getenv, sigaction, exp, time are system/library |
353 | # calls that should each see at least one use. exp can be expl | |
9be194d5 | 354 | # if so configured. |
182bc989 | 355 | my %expected = ( |
182bc989 JH |
356 | chmod => undef, # There is no Configure symbol for chmod. |
357 | socket => 'd_socket', | |
358 | getenv => undef, # There is no Configure symbol for getenv, | |
359 | sigaction => 'd_sigaction', | |
360 | time => 'd_time', | |
361 | ); | |
362 | ||
57ae61ef | 363 | if ($Config{uselongdouble} && $Config{longdblsize} > $Config{doublesize}) { |
84e6cb05 JH |
364 | $expected{expl} = undef; # There is no Configure symbol for expl. |
365 | } elsif ($Config{usequadmath}) { | |
366 | $expected{expq} = undef; # There is no Configure symbol for expq. | |
182bc989 | 367 | } else { |
0fa5dd23 | 368 | $expected{exp} = undef; # There is no Configure symbol for exp. |
182bc989 | 369 | } |
1671bb9e JH |
370 | |
371 | # DynaLoader will use dlopen, unless we are building static, | |
93e77b8c | 372 | # and it is used in the platforms we are supporting in this test. |
182bc989 JH |
373 | if ($Config{usedl} ) { |
374 | $expected{dlopen} = 'd_dlopen'; | |
831ed035 | 375 | } |
1671bb9e | 376 | |
182bc989 JH |
377 | for my $symbol (sort keys %expected) { |
378 | if (defined $expected{$symbol} && !$Config{$expected{$symbol}}) { | |
379 | SKIP: { | |
380 | skip("no $symbol"); | |
381 | } | |
382 | next; | |
383 | } | |
384 | my @o = exists $symbols{undef}{$symbol} ? | |
385 | sort keys %{ $symbols{undef}{$symbol} } : (); | |
93e77b8c | 386 | ok(@o, "uses $symbol (@o)"); |
831ed035 JH |
387 | } |
388 | ||
182bc989 | 389 | # There are certain symbols we expect NOT to see. |
446b89af | 390 | # |
31e62fa1 JH |
391 | # gets is horribly unsafe. |
392 | # | |
446b89af JH |
393 | # fgets should not be used (Perl has its own API, sv_gets), |
394 | # even without perlio. | |
31e62fa1 JH |
395 | # |
396 | # tmpfile is unsafe. | |
397 | # | |
182bc989 | 398 | # strcat, strcpy, strncat, strncpy are unsafe. |
31e62fa1 JH |
399 | # |
400 | # sprintf and vsprintf should not be used because | |
401 | # Perl has its own safer and more portable implementations. | |
402 | # (One exception: for certain floating point outputs | |
182bc989 | 403 | # the native sprintf is still used in some platforms, see below.) |
31e62fa1 | 404 | # |
a7941017 | 405 | # atoi has unsafe and undefined failure modes, and is affected by locale. |
26065e6c | 406 | # Its cousins include atol and atoll. |
31e62fa1 | 407 | # |
68419f9c | 408 | # strtol and strtoul are affected by locale. |
26065e6c | 409 | # Cousins include strtoq. |
68419f9c | 410 | # |
6c1246d3 JH |
411 | # system should not be used, use pp_system or my_popen. |
412 | # | |
182bc989 JH |
413 | |
414 | my %unexpected; | |
415 | ||
6c1246d3 JH |
416 | for my $str (qw(system)) { |
417 | $unexpected{$str} = "d_$str"; | |
418 | } | |
419 | ||
182bc989 JH |
420 | for my $stdio (qw(gets fgets tmpfile sprintf vsprintf)) { |
421 | $unexpected{$stdio} = undef; # No Configure symbol for these. | |
422 | } | |
423 | for my $str (qw(strcat strcpy strncat strncpy)) { | |
424 | $unexpected{$str} = undef; # No Configure symbol for these. | |
425 | } | |
68419f9c | 426 | |
a7941017 | 427 | $unexpected{atoi} = undef; # No Configure symbol for atoi. |
26065e6c | 428 | $unexpected{atol} = undef; # No Configure symbol for atol. |
182bc989 | 429 | |
26065e6c | 430 | for my $str (qw(atoll strtol strtoul strtoq)) { |
68419f9c JH |
431 | $unexpected{$str} = "d_$str"; |
432 | } | |
433 | ||
182bc989 JH |
434 | for my $symbol (sort keys %unexpected) { |
435 | if (defined $unexpected{$symbol} && !$Config{$unexpected{$symbol}}) { | |
436 | SKIP: { | |
437 | skip("no $symbol"); | |
438 | } | |
439 | next; | |
440 | } | |
441 | my @o = exists $symbols{undef}{$symbol} ? | |
442 | sort keys %{ $symbols{undef}{$symbol} } : (); | |
aab7f3d5 JH |
443 | # While sprintf() is bad in the general case, |
444 | # some platforms implement Gconvert via sprintf, in sv.o. | |
182bc989 | 445 | if ($symbol eq 'sprintf' && |
aab7f3d5 JH |
446 | $Config{d_Gconvert} =~ /^sprintf/ && |
447 | @o == 1 && $o[0] eq 'sv.o') { | |
448 | SKIP: { | |
449 | skip("uses sprintf for Gconvert in sv.o"); | |
450 | } | |
451 | } else { | |
182bc989 | 452 | is(@o, 0, "uses no $symbol (@o)"); |
aab7f3d5 | 453 | } |
831ed035 JH |
454 | } |
455 | ||
3faa8758 JH |
456 | # Check that any text symbols named S_ are not exported. |
457 | my $export_S_prefix = 0; | |
458 | for my $t (sort grep { /^S_/ } keys %{$symbols{text}}) { | |
459 | for my $o (sort keys %{$symbols{text}{$t}}) { | |
460 | if (exists $symbols{text}{$t}{$o}{T}) { | |
461 | fail($t, "$t exported from $o"); | |
462 | $export_S_prefix++; | |
463 | } | |
464 | } | |
465 | } | |
466 | is($export_S_prefix, 0, "no S_ exports"); | |
467 | ||
caea674c JH |
468 | if (defined $nm_err_tmp) { |
469 | if (open(my $nm_err_fh, $nm_err_tmp)) { | |
470 | my $error; | |
471 | while (<$nm_err_fh>) { | |
472 | # OS X has weird error where nm warns about | |
473 | # "no name list" but then outputs fine. | |
4fc148a8 DM |
474 | # llvm-nm may also complain about 'no symbols'. In some |
475 | # versions this is exactly the string "no symbols\n" but in later | |
476 | # versions becomes a string followed by ": no symbols\n". For this | |
477 | # test it is typically "../libperl.a:perlapi.o: no symbols\n" | |
d74b131b | 478 | if ( $^O eq 'darwin' ) { |
4fc148a8 | 479 | if (/nm: no name list/ || /^(.*: )?no symbols$/ ) { |
d74b131b N |
480 | print "# $^O ignoring $nm output: $_"; |
481 | next; | |
482 | } | |
caea674c JH |
483 | } |
484 | warn "$0: Unexpected $nm error: $_"; | |
485 | $error++; | |
b52baaa9 | 486 | } |
caea674c JH |
487 | die "$0: Unexpected $nm errors\n" if $error; |
488 | } else { | |
489 | warn "Failed to open '$nm_err_tmp': $!\n"; | |
b52baaa9 | 490 | } |
b52baaa9 JH |
491 | } |
492 | ||
d92f47ae | 493 | done_testing(); |