Re: Segfault when using \bookpart

[Mats Bengtsson]

I just noticed some more lines in the output of valgrind, that might be 
related (or perhaps not,
since it's within some STL code):

...
Finding the ideal number of pages...
Fitting music on 1 or 2 pages...==5786==
==5786== Source and destination overlap in memcpy(0x7D9A5C8, 0x7D9A5C8, 93)
==5786==    at 0x4006236: memcpy (mac_replace_strmem.c:394)
==5786==    by 0x8168F03: Constrained_breaking::line_details(unsigned, 
unsigned, unsigned) (stl_algobase.h:110)
==5786==    by 0x8263ECC: Page_breaking::cache_line_details(unsigned) 
(page-breaking.cc:570)
==5786==    by 0x826443B: Page_breaking::min_page_count(unsigned, 
unsigned) (page-breaking.cc:641)
==5786==    by 0x8259D84: Optimal_page_breaking::solve() 
(optimal-page-breaking.cc:93)
==5786==    by 0x826206C: ly_optimal_breaking(scm_unused_struct*) 
(page-breaking-scheme.cc:32)
==5786==    by 0x406AEAE: deval (eval.c:4220)
==5786==    by 0x406C5DF: deval (eval.c:3636)
==5786==    by 0x4068A66: scm_dapply (eval.c:4998)
==5786==    by 0x4068C52: scm_apply (eval.c:4797)
==5786==    by 0x406994B: scm_apply_0 (eval.c:4686)
==5786==    by 0x827DB78: Paper_book::pages() (paper-book.cc:591)

Drawing systems...
...

   /Mats

Mats Bengtsson wrote:
> Patrick McCarty wrote:
> > Can anyone reproduce this with the latest git?
> >   
> Yes, I get a SIGSEGV with todays GIT. I attach the last lines output 
> by valgrind, in case it
> can provide some hint on the problem:
>
>
> Drawing systems...
> Layout output to `s.ps'...
> Calculating line breaks...
> Drawing systems... ==5786==
> ==5786== Invalid read of size 4
> ==5786==    at 0x82EA775: get_column_description(std::vector<Grob*, 
> std::allocator<Grob*> > const&, unsigned, bool) (simple-spacer.cc:345)
> ==5786==    by 0x82EBD75: get_line_forces(std::vector<Grob*, 
> std::allocator<Grob*> > const&, double, double, bool) 
> (simple-spacer.cc:408)
> ==5786==    by 0x81694E9: Constrained_breaking::initialize() 
> (constrained-breaking.cc:351)
> ==5786==    by 0x816A4BF: 
> Constrained_breaking::Constrained_breaking(Paper_score*, 
> std::vector<unsigned, std::allocator<unsigned> > const&) 
> (constrained-breaking.cc:310)
> ==5786==    by 0x8264F92: Page_breaking::find_chunks_and_breaks(bool 
> (*)(Grob*)) (page-breaking.cc:374)
> ==5786==    by 0x826694D: Page_breaking::Page_breaking(Paper_book*, 
> bool (*)(Grob*)) (page-breaking.cc:106)
> ==5786==    by 0x8259790: 
> Optimal_page_breaking::Optimal_page_breaking(Paper_book*) 
> (optimal-page-breaking.cc:28)
> ==5786==    by 0x8262064: ly_optimal_breaking(scm_unused_struct*) 
> (page-breaking-scheme.cc:31)
> ==5786==    by 0x406AEAE: deval (eval.c:4220)
> ==5786==    by 0x406C5DF: deval (eval.c:3636)
> ==5786==    by 0x4068A66: scm_dapply (eval.c:4998)
> ==5786==    by 0x4068C52: scm_apply (eval.c:4797)
> ==5786==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
> ==5786==
> ==5786== Process terminating with default action of signal 11 (SIGSEGV)
> ==5786==  Access not within mapped region at address 0x0
> ==5786==    at 0x82EA775: get_column_description(std::vector<Grob*, 
> std::allocator<Grob*> > const&, unsigned, bool) (simple-spacer.cc:345)
> ==5786==    by 0x82EBD75: get_line_forces(std::vector<Grob*, 
> std::allocator<Grob*> > const&, double, double, bool) 
> (simple-spacer.cc:408)
> ==5786==    by 0x81694E9: Constrained_breaking::initialize() 
> (constrained-breaking.cc:351)
> ==5786==    by 0x816A4BF: 
> Constrained_breaking::Constrained_breaking(Paper_score*, 
> std::vector<unsigned, std::allocator<unsigned> > const&) 
> (constrained-breaking.cc:310)
> ==5786==    by 0x8264F92: Page_breaking::find_chunks_and_breaks(bool 
> (*)(Grob*)) (page-breaking.cc:374)
> ==5786==    by 0x826694D: Page_breaking::Page_breaking(Paper_book*, 
> bool (*)(Grob*)) (page-breaking.cc:106)
> ==5786==    by 0x8259790: 
> Optimal_page_breaking::Optimal_page_breaking(Paper_book*) 
> (optimal-page-breaking.cc:28)
> ==5786==    by 0x8262064: ly_optimal_breaking(scm_unused_struct*) 
> (page-breaking-scheme.cc:31)
> ==5786==    by 0x406AEAE: deval (eval.c:4220)
> ==5786==    by 0x406C5DF: deval (eval.c:3636)
> ==5786==    by 0x4068A66: scm_dapply (eval.c:4998)
> ==5786==    by 0x4068C52: scm_apply (eval.c:4797)
> ==5786==
> ==5786== ERROR SUMMARY: 88182 errors from 88 contexts (suppressed: 41 
> from 2)
> ==5786== malloc/free: in use at exit: 90,572,019 bytes in 177,183 blocks.
> ==5786== malloc/free: 2,600,832 allocs, 2,423,649 frees, 493,393,725 
> bytes allocated.
> ==5786== For counts of detected errors, rerun with: -v
> ==5786== searching for pointers to 177,183 not-freed blocks.
> ==5786== checked 90,609,632 bytes.
> ==5786==
> ==5786== LEAK SUMMARY:
> ==5786==    definitely lost: 103,234 bytes in 3,616 blocks.
> ==5786==      possibly lost: 139,613 bytes in 237 blocks.
> ==5786==    still reachable: 90,329,172 bytes in 173,330 blocks.
> ==5786==         suppressed: 0 bytes in 0 blocks.
> ==5786== Use --leak-check=full to see details of leaked memory.
>
>
>   /Mats
>
>
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--
=============================================
        Mats Bengtsson
        Signal Processing
        School of Electrical Engineering
        Royal Institute of Technology (KTH)
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe
=============================================