Closed
Description
Vague title because I am not really sure what is going on.
Slightly reduced from https://s3.amazonaws.com/julialang-reports/nanosoldier/pkgeval/by_hash/c356e60_vs_bd47eca/LasIO.primary.log
Pasting the following into the REPL segfaults:
using LasIO
using Mmap
using Downloads
testfile = Downloads.download("https://github.com/visr/LasIO.jl/raw/d39266994f60213ce373ed7d30b449d5400dc6c5/test/libLAS_1.2.las")
io = open(testfile)
header, pointdata = try
read(io, UInt32)
header = read(io, LasHeader)
n = header.records_count
pointtype = LasIO.pointformat(header)
pointsize = Int(header.data_record_length)
pointbytes = Mmap.mmap(io, Vector{UInt8}, n*pointsize, position(io))
pointdata = LasIO.PointVector{pointtype}(pointbytes, pointsize)
header, pointdata
finally
close(io)
end
pointdata[41248] signal 11 (2): Segmentation fault: 11
in expression starting at none:0
unsafe_load at ./pointer.jl:153 [inlined]
unsafe_load at ./pointer.jl:153 [inlined]
peek at ./iobuffer.jl:205 [inlined]
read at ./iobuffer.jl:211 [inlined]
read at ./none:0 [inlined]
getindex at /Users/kristoffercarlsson/PkgEvalAnalysis/dev/LasIO.jl/src/point.jl:37
isassigned at ./multidimensional.jl:1601 [inlined]
isassigned at ./multidimensional.jl:1596
unknown function (ip: 0x11150c153)
alignment at ./arrayshow.jl:68
_print_matrix at ./arrayshow.jl:207
print_matrix at ./arrayshow.jl:171
print_matrix at ./arrayshow.jl:171 [inlined]
print_array at ./arrayshow.jl:358 [inlined]
show at ./arrayshow.jl:399
unknown function (ip: 0x11145c6ab)Note that pointdata contains an IOBuffer wrapping the input pointbytes (https://github.com/visr/LasIO.jl/blob/0a9f58d78c5a68da42b467275cdeca83cc0c7450/src/point.jl#L15-L20)
Things that make it "work":
- adding a
error()call above thepointdataprinting - Calling the
close(io)outside thefinally - Not using
mmapand instead usingpointbytes = read(io, n*pointsize)
Any idea @vtjnash?
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