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<discocaml>
<romain.beauxis> Hi again! I have a segfault most likely due to a faulty C binding. The stack trace seems to be a corruption of the `bf_large_tree`:
<discocaml>
<romain.beauxis> ```
<discocaml>
<romain.beauxis> Program terminated with signal SIGSEGV, Segmentation fault.
<discocaml>
<romain.beauxis> #0 bf_large_wosize (n=0xffffffffffffffff) at freelist.c:847
<discocaml>
<romain.beauxis> #1 bf_search (wosz=220) at freelist.c:1022
<discocaml>
<romain.beauxis> #2 bf_insert_block (n=0x7fc655814f18) at freelist.c:1209
<discocaml>
<romain.beauxis> #3 0x000055b59a5524f6 in bf_insert_remnant (v=140489814789912) at freelist.c:1315
<discocaml>
<romain.beauxis> #5 bf_allocate_from_tree (wosz=<optimized out>, set_least=0) at freelist.c:1501
<discocaml>
<romain.beauxis> #6 0x000055b59a5371e9 in caml_fl_allocate (wo_sz=1024) at caml/freelist.h:40
<discocaml>
<romain.beauxis> #7 caml_alloc_shr_aux (profinfo=0, track=1, tag=254, wosize=1024) at memory.c:471
<discocaml>
<romain.beauxis> #8 caml_alloc_shr_with_profinfo (profinfo=0, tag=254, wosize=1024) at memory.c:526
<discocaml>
<romain.beauxis> #9 caml_alloc_shr (wosize=1024, tag=254) at memory.c:537
<discocaml>
<romain.beauxis> #10 0x000055b59a5378ad in caml_alloc (wosize=wosize@entry=1024, tag=tag@entry=254) at alloc.c:52
<discocaml>
<romain.beauxis> #11 0x000055b59a4ea35d in convert_to_planar_float_array (swr=0x7fc68405aaf0, in_nb_samples=<optimized out>, out_nb_samples=<optimized out>, out_vect=0x7fc69d7f8c08) at swresample_stubs.c:381
<discocaml>
<romain.beauxis> ```
<discocaml>
<romain.beauxis> Does anyone have a suggestion as to how to approach debugging this? This seems pretty daunting. Compiler is OCaml 4.14
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<Guest10>
what package in the opam-repository contains the opam binary? `opam install opam-client` is apparently not the one I was looking for. None of `opam search opam` gives a hint what package it might be.
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<Guest10>
ah, it is opam-devel ...
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<rustyne>
romain.beauxis: is it recordable with rr?
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<discocaml>
<romain.beauxis> rustyne: what is rr? 🙂
<discocaml>
<romain.beauxis> Unfortunately it doesn't look like it rustyne, the machine is on a cloud platform and does not have the featue enabled in the kernel.