valgrind e$B2<$Ge(B StringIO.new(“a”).gets("\n") e$B$H$9$k$H!"e(B
strio_getline e$B$Ge(B
Conditional jump or move depends on uninitialised value(s)
e$B$H$J$j$^$9!#e(B
% valgrind ./ruby -rstringio -ve ‘StringIO.new(“a”).gets("\n")’
==12270== Memcheck, a memory error detector.
==12270== Copyright © 2002-2006, and GNU GPL’d, by Julian Seward et
al.
==12270== Using LibVEX rev 1658, a library for dynamic binary
translation.
==12270== Copyright © 2004-2006, and GNU GPL’d, by OpenWorks LLP.
==12270== Using valgrind-3.2.1-Debian, a dynamic binary instrumentation
framework.
==12270== Copyright © 2000-2006, and GNU GPL’d, by Julian Seward et
al.
==12270== For more details, rerun with: -v
==12270==
–12270-- DWARF2 CFI reader: unhandled CFI instruction 0:50
–12270-- DWARF2 CFI reader: unhandled CFI instruction 0:50
–12270-- DWARF2 CFI reader: unhandled CFI instruction 0:50
–12270-- DWARF2 CFI reader: unhandled CFI instruction 0:50
ruby 1.9.0 (2007-06-28 patchlevel 0) [i686-linux]
…
==12270== Conditional jump or move depends on uninitialised value(s)
==12270== at 0x402892E: strio_getline (stringio.c:807)
==12270== by 0x4028D92: strio_gets (stringio.c:872)
==12270== by 0x80E5967: call_cfunc (insnhelper.ci:270)
==12270== by 0x80EE1F7: vm_call_cfunc (insnhelper.ci:359)
==12270== by 0x80EDEA2: vm_call_method (insnhelper.ci:520)
==12270== by 0x80EA2D6: vm_eval (insns.def:1194)
==12270== by 0x80EE33D: vm_eval_body (vm.c:1150)
==12270== by 0x80EE97A: rb_thread_eval (vm.c:1358)
==12270== by 0x80EFCBD: yarvcore_eval_iseq (yarvcore.c:97)
==12270== by 0x80EFDB7: yarvcore_eval_parsed (yarvcore.c:129)
==12270== by 0x8059C0F: ruby_exec_internal (eval.c:228)
==12270== by 0x8059C4C: ruby_exec (eval.c:243)
==12270==
==12270== Conditional jump or move depends on uninitialised value(s)
==12270== at 0x4028939: strio_getline (stringio.c:807)
==12270== by 0x4028D92: strio_gets (stringio.c:872)
==12270== by 0x80E5967: call_cfunc (insnhelper.ci:270)
==12270== by 0x80EE1F7: vm_call_cfunc (insnhelper.ci:359)
==12270== by 0x80EDEA2: vm_call_method (insnhelper.ci:520)
==12270== by 0x80EA2D6: vm_eval (insns.def:1194)
==12270== by 0x80EE33D: vm_eval_body (vm.c:1150)
==12270== by 0x80EE97A: rb_thread_eval (vm.c:1358)
==12270== by 0x80EFCBD: yarvcore_eval_iseq (yarvcore.c:97)
==12270== by 0x80EFDB7: yarvcore_eval_parsed (yarvcore.c:129)
==12270== by 0x8059C0F: ruby_exec_internal (eval.c:228)
==12270== by 0x8059C4C: ruby_exec (eval.c:243)
…