[augeas-devel] [Augeas] #294: Invalid read of size 8 with square lens

[Augeas]

#294: Invalid read of size 8 with square lens
------------------------+---------------------
 Reporter:  fgiraldeau  |       Owner:  lutter
     Type:  defect      |      Status:  new
 Priority:  major       |   Milestone:  next
Component:  Augeas      |     Version:  0.8.0
 Keywords:              |  Blocked By:
 Blocking:              |
------------------------+---------------------
 The bug can be reproduced with the attached lens on the master branch.
 Here is the output of Valgrind showing the error:

 {{{
 ==17782== Invalid read of size 8
 ==17782==    at 0x5129554: __stpncpy_sse2_unaligned (strcpy-
 sse2-unaligned.S:297)
 ==17782==    by 0x4E5BC33: enc_format (lens.c:972)
 ==17782==    by 0x4E6BB9A: regexp_match_error (put.c:119)
 ==17782==    by 0x4E6C099: split_concat (put.c:228)
 ==17782==    by 0x4E6D857: create_concat (put.c:689)
 ==17782==    by 0x4E6DBD6: create_lens (put.c:762)
 ==17782==    by 0x4E6CBBF: put_subtree (put.c:453)
 ==17782==    by 0x4E6D6AC: create_subtree (put.c:659)
 ==17782==    by 0x4E6DC06: create_lens (put.c:768)
 ==17782==    by 0x4E6D236: put_quant_star (put.c:557)
 ==17782==    by 0x4E6D622: put_lens (put.c:641)
 ==17782==    by 0x4E6CFE1: put_concat (put.c:511)
 ==17782==  Address 0x66969e0 is 0 bytes inside a block of size 4 alloc'd
 ==17782==    at 0x4C29DB4: calloc (in /usr/lib/valgrind
 /vgpreload_memcheck-amd64-linux.so)
 ==17782==    by 0x4E47502: mem_alloc_n (memory.c:66)
 ==17782==    by 0x4E6BD25: make_split (put.c:158)
 ==17782==    by 0x4E6CB22: put_subtree (put.c:448)
 ==17782==    by 0x4E6D6AC: create_subtree (put.c:659)
 ==17782==    by 0x4E6DC06: create_lens (put.c:768)
 ==17782==    by 0x4E6D236: put_quant_star (put.c:557)
 ==17782==    by 0x4E6D622: put_lens (put.c:641)
 ==17782==    by 0x4E6CFE1: put_concat (put.c:511)
 ==17782==    by 0x4E6D5DD: put_lens (put.c:632)
 ==17782==    by 0x4E6D516: put_square (put.c:603)
 ==17782==    by 0x4E6D661: put_lens (put.c:650)
 }}}

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Ticket URL: <https://fedorahosted.org/augeas/ticket/294>
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