[ruby-core:42056] [ruby-trunk - Bug #5851] make check fails when compiling with GCC 4.7 - *** longjmp causes uninitialized stack frame ***

Issue #5851 has been updated by Vit Ondruch.


Valgrind output when compiling with -O1:


# Running tests:

==8685== Invalid write of size 8
==8685==    at 0x4FDA9E8: cont_restore_1 (cont.c:675)
==8685==    by 0x4FDAA12: cont_restore_0 (cont.c:771)
==8685==    by 0x4FDAB0E: rb_cont_call (cont.c:910)
==8685==    by 0x4FB8D90: call_cfunc (vm_insnhelper.c:317)
==8685==    by 0x4FB96A8: vm_call_cfunc (vm_insnhelper.c:404)
==8685==    by 0x4FB9D7F: vm_call_method (vm_insnhelper.c:534)
==8685==    by 0x4FBF772: vm_exec_core (insns.def:1015)
==8685==    by 0x4FCCF77: vm_exec (vm.c:1220)
==8685==    by 0x4FCB870: invoke_block_from_c (vm.c:624)
==8685==    by 0x4FCB986: vm_yield (vm.c:654)
==8685==    by 0x4FC7D93: rb_yield_0 (vm_eval.c:740)
==8685==    by 0x4FC7DCD: rb_yield (vm_eval.c:750)
==8685==  Address 0x7feffad00 is not stack'd, malloc'd or (recently) free'd
==8685== 
*** longjmp causes uninitialized stack frame ***: ./ruby terminated

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Bug #5851: make check fails when compiling with GCC 4.7 - *** longjmp causes uninitialized stack frame ***
https://bugs.ruby-lang.org/issues/5851

Author: Vit Ondruch
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]


I am experiencing strange test error [1] when compiling Ruby 1.9.3-p0/1.9.3-p19/2.0.0 rev 34217 with GCC 4.7 in Fedora Rawhide [2]. Everything worked just fine with GCC 4.6.



Vit


[1] https://gist.github.com/1564328
[2] http://koji.fedoraproject.org/koji/taskinfo?taskID=3624339


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