Vec3fArray memorybuffer.tobytes() crash

[zhuowei]

Description of Issue

Vec3fArray is supposed to conform to the Buffer interface, but calling tobytes() on a memorybuffer object constructed with the Vec3fArray causes the Python interpreter to crash.

Steps to Reproduce

1. run this:

from pxr import Vt

a = Vt.Vec3fArray([(1,1,1)])
b = memoryview(a)
print "calling tobytes"
c = b.tobytes()
print "out of tobytes"

2. Expected result: Python interpreter cleanly exits
3. Actual result: Python interpreter crashes with a segmentation fault

System Information (OS, Hardware)

Ubuntu 16.04, --no-imaging, build script modified to use system Boost (I can try compiling with the bundled copy of Boost if needed)

[spiffmon]

Hi there, I cannot reproduce this! I suspect a build or version problem? --spiff

…

On Fri, Jun 15, 2018 at 8:34 PM zhuowei ***@***.***> wrote: Description of Issue Vec3fArray is supposed to conform to the Buffer interface, but calling tobytes() on a memorybuffer object constructed with the Vec3fArray causes the Python interpreter to crash. Steps to Reproduce 1. run this: from pxr import Vt a = Vt.Vec3fArray([(1,1,1)]) b = memoryview(a) print "calling tobytes" c = b.tobytes() print "out of tobytes" 1. Expected result: Python interpreter cleanly exits 2. Actual result: Python interpreter crashes with a segmentation fault System Information (OS, Hardware) Ubuntu 16.04, --no-imaging, build script modified to use system Boost (I can try compiling with the bundled copy of Boost if needed) — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#533>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AF7qaFhebeVIGrAq7pwMv7EPN_9sHaJ0ks5t9HywgaJpZM4UqVei> .

[zhuowei]

@spiffmon Thanks. I suspect it's the system Boost version that's causing the issue, so I'll try recompiling with the build script's boost.

[jtran56]

Filed as internal issue #162209.

[superfunc]

FWIW, I was able to recreate this on macOS High Sierra with a build generated from build_usd.py