# SEGV by modifying \_\_members\_\_

**URL:** <https://www.ruby-forum.com/t/segv-by-modifying-members/114111>\
**Category:** Development\
**Created:** [September 8, 2007, 1:02am UTC](https://www.ruby-forum.com/t/segv-by-modifying-members/114111 "2007-09-08T01:02:59Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [September 8, 2007, 1:02am UTC](https://www.ruby-forum.com/t/segv-by-modifying-members/114111/1 "2007-09-08T01:02:59Z")

</div>

e$B0J2\<$N$h$&$K$9$k$He(B [BUG] Segmentation fault e$B$K$J$j$^$9!#e(B

## % ./ruby -e ’ S = Struct.new(:a) Marshal.load("\004\bIc\006S\006:\020\_\_members\_\_"\bfoo") p S.members ’ -e:4: – control frame ---------- c:0004 p:---- s:0009 b:0009 l:000008 d:000008 CFUNC :members c:0003 p:0048 s:0006 b:0005 l:000004 d:000004 TOP -e:4 c:0002 p:---- s:0003 b:0003 l:000002 d:000002 FINISH :inherited c:0001 p:---- s:0001 b:-001 l:000000 d:000000 ------

DBG\> : “-e:4:in `’”  
– backtrace of native function call (Use addr2line) –  
0x80f77d2  
0x8113e10  
0x8113eaf  
0x80c1119  
0xb7f3f420  
0x80ed894  
0x80f52ff  
0x80f4e8e  
0x80f16d3  
0x80f54d8  
0x80f5b1d  
0x805a32b  
0x805a3ae  
0x8057605  
0xb7da8ea8  
0x8057531