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20 hours ago •
toretore
toretore
segfault generating datamatrix barcode
barcode = Barby::DataMatrix.new(json)
blob = Barby::PngOutputter.new(barcode)
blob.xdim = 3
blob.ydim = 3
barcode_image = Tempfile.new(['barcode', '.png'])
barcode_image.binmode
barcode_image.write(blob.to_png) # segfault on this line
barcode_image.close
Segfault start:
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/barcode/data_matrix.rb:24: [BUG] Segmentation fault at 0x0000000000001d
ruby 2.1.5p273 (2014-11-13 revision 48405) [x86_64-darwin16.0]
-- Control frame information -----------------------------------------------
c:0126 p:0039 s:0640 e:000638 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/barcode/data_matrix.rb:24
c:0125 p:0007 s:0636 e:000635 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/barcode/data_matrix.rb:29
c:0124 p:0041 s:0633 e:000632 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter.rb:84
c:0123 p:0014 s:0629 e:000628 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:105
c:0122 p:0007 s:0626 e:000625 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:77
c:0121 p:0007 s:0623 e:000622 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:85
c:0120 p:0016 s:0620 e:000618 BLOCK .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:23
c:0119 p:0020 s:0614 e:000613 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter.rb:122
c:0118 p:0013 s:0608 e:000607 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:22
c:0117 p:0043 s:0604 e:000603 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:66
c:0116 p:0009 s:0599 e:000598 METHOD .rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:72
c:0114 p:---- s:0593 e:000592 CFUNC :eval
c:0110 p:---- s:0570 e:000569 CFUNC :catch
c:0108 p:---- s:0564 e:000563 CFUNC :catch
c:0105 p:---- s:0550 e:000549 CFUNC :loop
c:0102 p:---- s:0542 e:000541 CFUNC :call
c:0094 p:---- s:0513 e:000512 CFUNC :catch
c:0089 p:0083 s:0493 E:001eb0 METHOD dev/project/lib/barcode.rb:41
c:0088 p:0015 s:0485 E:0019d0 METHOD dev/project/lib/barcode.rb:19
c:0086 p:---- s:0472 e:000471 CFUNC :new
c:0085 p:0016 s:0468 E:001ab0 METHOD dev/project/app/models/outbound_fax_pdf.rb:19
c:0084 p:0007 s:0464 E:001b28 METHOD dev/project/app/models/outbound_fax_pdf.rb:11
c:0082 p:---- s:0458 e:000457 CFUNC :call
c:0080 p:---- s:0452 e:000451 CFUNC :call
c:0077 p:---- s:0439 e:000438 CFUNC :call
c:0071 p:---- s:0417 e:000416 CFUNC :catch
c:0051 p:---- s:0303 e:000302 CFUNC :each
c:0003 p:---- s:0008 e:000007 CFUNC :call
c:0002 p:0042 s:0005 E:002090 BLOCK .rvm/gems/ruby-2.1.5@project/gems/logging-2.2.2/lib/logging/diagnostic_context.rb:474 [FINISH]
c:0001 p:---- s:0002 e:000001 TOP [FINISH]
.rvm/gems/ruby-2.1.5@project/gems/logging-2.2.2/lib/logging/diagnostic_context.rb:474:in `block in create_with_logging_context'
.rvm/gems/ruby-2.1.5@project/gems/logging-2.2.2/lib/logging/diagnostic_context.rb:474:in `call'
dev/project/app/models/outbound_fax_pdf.rb:19:in `new'
dev/project/lib/barcode.rb:41:in `generate_barcode_image'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:72:in `to_png'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:66:in `to_datastream'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:22:in `to_image'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter.rb:122:in `with_options'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:23:in `block in to_image'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:85:in `full_width'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:77:in `width'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter/png_outputter.rb:105:in `length'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/outputter.rb:84:in `encoding'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/barcode/data_matrix.rb:29:in `encoding'
.rvm/gems/ruby-2.1.5@project/gems/barby-0.6.5/lib/barby/barcode/data_matrix.rb:24:in `encoder'
-- C level backtrace information -------------------------------------------
0 libruby.2.1.0.dylib 0x000000010e264096 rb_vm_bugreport + 134
1 libruby.2.1.0.dylib 0x000000010e1194a4 report_bug + 292
2 libruby.2.1.0.dylib 0x000000010e119373 rb_bug + 179
3 libruby.2.1.0.dylib 0x000000010e1e6723 sigsegv + 131
4 libsystem_platform.dylib 0x00007fffb8defb3a _sigtramp + 26
5 ??? 0x000000000000001d 0x0 + 29
6 libruby.2.1.0.dylib 0x000000010e1eea29 st_lookup + 41
7 libruby.2.1.0.dylib 0x000000010e25ea52 vm_setivar + 322
8 libruby.2.1.0.dylib 0x000000010e247e22 vm_exec_core + 930
9 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
10 libruby.2.1.0.dylib 0x000000010e262968 eval_string_with_cref + 1512
11 libruby.2.1.0.dylib 0x000000010e255b51 rb_f_eval + 161
12 libruby.2.1.0.dylib 0x000000010e12a782 bind_eval + 82
13 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
14 libruby.2.1.0.dylib 0x000000010e24acab vm_exec_core + 12843
15 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
16 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
17 libruby.2.1.0.dylib 0x000000010e262cec catch_i + 76
18 libruby.2.1.0.dylib 0x000000010e256888 rb_catch_protect + 152
19 libruby.2.1.0.dylib 0x000000010e256e4d rb_f_catch + 77
20 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
21 libruby.2.1.0.dylib 0x000000010e24aaea vm_exec_core + 12394
22 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
23 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
24 libruby.2.1.0.dylib 0x000000010e262cec catch_i + 76
25 libruby.2.1.0.dylib 0x000000010e256888 rb_catch_protect + 152
26 libruby.2.1.0.dylib 0x000000010e256e4d rb_f_catch + 77
27 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
28 libruby.2.1.0.dylib 0x000000010e24aaea vm_exec_core + 12394
29 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
30 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
31 libruby.2.1.0.dylib 0x000000010e262d58 loop_i + 40
32 libruby.2.1.0.dylib 0x000000010e122092 rb_rescue2 + 274
33 libruby.2.1.0.dylib 0x000000010e256ed3 rb_f_loop + 51
34 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
35 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
36 libruby.2.1.0.dylib 0x000000010e24aaea vm_exec_core + 12394
37 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
38 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
39 libruby.2.1.0.dylib 0x000000010e257b51 vm_invoke_proc + 177
40 libruby.2.1.0.dylib 0x000000010e257a90 rb_vm_invoke_proc + 32
41 libruby.2.1.0.dylib 0x000000010e128c70 proc_call + 112
42 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
43 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
44 libruby.2.1.0.dylib 0x000000010e24acab vm_exec_core + 12843
45 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
46 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
47 libruby.2.1.0.dylib 0x000000010e262cec catch_i + 76
48 libruby.2.1.0.dylib 0x000000010e256888 rb_catch_protect + 152
49 libruby.2.1.0.dylib 0x000000010e256e4d rb_f_catch + 77
50 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
51 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
52 libruby.2.1.0.dylib 0x000000010e24aaea vm_exec_core + 12394
53 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
54 libruby.2.1.0.dylib 0x000000010e2616ba rb_call0 + 250
55 libruby.2.1.0.dylib 0x000000010e265957 rb_debug_inspector_open + 855
56 libruby.2.1.0.dylib 0x000000010e1223f6 rb_ensure + 166
58 libruby.2.1.0.dylib 0x000000010e269078 exec_hooks_protected + 216
59 libruby.2.1.0.dylib 0x000000010e266c72 rb_threadptr_exec_event_hooks_orig + 450
60 libruby.2.1.0.dylib 0x000000010e24a381 vm_exec_core + 10497
61 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
62 libruby.2.1.0.dylib 0x000000010e2616ba rb_call0 + 250
63 libruby.2.1.0.dylib 0x000000010e1776a9 rb_class_new_instance + 41
64 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
65 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
66 libruby.2.1.0.dylib 0x000000010e24acab vm_exec_core + 12843
67 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
68 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
69 libruby.2.1.0.dylib 0x000000010e257b51 vm_invoke_proc + 177
70 libruby.2.1.0.dylib 0x000000010e260891 vm_call0_body + 961
71 libruby.2.1.0.dylib 0x000000010e254153 rb_vm_call + 51
72 libruby.2.1.0.dylib 0x000000010e127c40 rb_method_call_with_block + 304
73 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
74 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
75 libruby.2.1.0.dylib 0x000000010e24acab vm_exec_core + 12843
76 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
77 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
78 libruby.2.1.0.dylib 0x000000010e257b51 vm_invoke_proc + 177
79 libruby.2.1.0.dylib 0x000000010e257a90 rb_vm_invoke_proc + 32
80 libruby.2.1.0.dylib 0x000000010e128c70 proc_call + 112
81 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
82 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
83 libruby.2.1.0.dylib 0x000000010e24acab vm_exec_core + 12843
84 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
85 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
86 libruby.2.1.0.dylib 0x000000010e257b51 vm_invoke_proc + 177
87 libruby.2.1.0.dylib 0x000000010e257a90 rb_vm_invoke_proc + 32
88 libruby.2.1.0.dylib 0x000000010e128c70 proc_call + 112
89 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
90 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
91 libruby.2.1.0.dylib 0x000000010e24acab vm_exec_core + 12843
92 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
93 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
94 libruby.2.1.0.dylib 0x000000010e262cec catch_i + 76
95 libruby.2.1.0.dylib 0x000000010e256888 rb_catch_protect + 152
96 libruby.2.1.0.dylib 0x000000010e256e4d rb_f_catch + 77
97 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
98 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
99 libruby.2.1.0.dylib 0x000000010e24aaea vm_exec_core + 12394
100 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
101 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
102 libruby.2.1.0.dylib 0x000000010e25535c rb_yield + 156
103 libruby.2.1.0.dylib 0x000000010e0da619 rb_ary_each + 41
104 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
105 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
106 libruby.2.1.0.dylib 0x000000010e24aaea vm_exec_core + 12394
107 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
108 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
109 libruby.2.1.0.dylib 0x000000010e257b51 vm_invoke_proc + 177
110 libruby.2.1.0.dylib 0x000000010e257a90 rb_vm_invoke_proc + 32
111 libruby.2.1.0.dylib 0x000000010e128c70 proc_call + 112
112 libruby.2.1.0.dylib 0x000000010e25d40a vm_call_cfunc + 986
113 libruby.2.1.0.dylib 0x000000010e25cd1d vm_call_method + 1037
114 libruby.2.1.0.dylib 0x000000010e24aaea vm_exec_core + 12394
115 libruby.2.1.0.dylib 0x000000010e258909 vm_exec + 137
116 libruby.2.1.0.dylib 0x000000010e26200b invoke_block_from_c + 2171
117 libruby.2.1.0.dylib 0x000000010e257b51 vm_invoke_proc + 177
118 libruby.2.1.0.dylib 0x000000010e257a90 rb_vm_invoke_proc + 32
119 libruby.2.1.0.dylib 0x000000010e2716d2 thread_start_func_2 + 498
120 libruby.2.1.0.dylib 0x000000010e2714c5 thread_start_func_1 + 149
121 libsystem_pthread.dylib 0x00007fffb8df993b _pthread_body + 180
122 libsystem_pthread.dylib 0x00007fffb8df9887 _pthread_body + 0
I've narrowed this down to a fairly small test case. This segfaults for me indeterminately, about 50% of the time:
require 'barby/barcode/data_matrix'
require 'barby/outputter/png_outputter'
require 'json'
data = { hello: "TEST TEST TEST TEST" }
barcode = Barby::DataMatrix.new(JSON.generate(data))
code = barcode.to_png
/Users/andy/.rvm/gems/ruby-2.1.5@projecct/gems/barby-0.6.5/lib/barby/barcode/data_matrix.rb:26: [BUG] Segmentation fault at 0x0000000000001d
This is kind of baffling. If you change certain things about the above input data, it causes the segfault, and other times it works.
Other four letter words fail:
data = { hello: "BAND BAND BAND BAND" }
But 5 words instead of 4 does not fail:
data = { hello: "BAND BAND BAND BAND BAND" }
Happens on Ruby 2.4.1 too, not just the version I'm using (ruby-2.1.5).