Compile warning on linux since 0a08ac2528 #94992

New Issue

Martijn Versteegh · 2022-01-17T23:50:26+01:00

Martijn Versteegh commented

2022-01-17 23:50:26 +01:00

System Information
Operating system:
Graphics card:

Blender Version
Broken: 0a08ac2528
Worked: Before that commit

Short description of error
When compiling I get the following compiler warning:

[1388/1553] Building CXX object intern/cycles/blender/CMakeFiles/bf_intern_cycles.dir/object.cpp.o
In file included from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node_type.h:20,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node.h:21,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/scene/geometry.h:20,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/id_map.h:22,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/sync.h:25,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object_cull.h:20,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object.cpp:17:
/home/martijn/progs/blender-git/blender/intern/cycles/util/array.h: In instantiation of ‘void ccl::array<T, alignment>::reserve(size_t) [with T = OpenImageIO_v2_2::ustring; long unsigned int alignment = 16; size_t = long unsigned int]’:
/home/martijn/progs/blender-git/blender/intern/cycles/util/array.h:266:7:   required from ‘void ccl::array<T, alignment>::push_back_slow(const T&) [with T = OpenImageIO_v2_2::ustring; long unsigned int alignment = 16]’
/home/martijn/progs/blender-git/blender/intern/cycles/blender/object.cpp:539:49:   required from here
/home/martijn/progs/blender-git/blender/intern/cycles/util/array.h:249:15: warning: ‘void* memcpy(void*, const void*, size_t)’ writing to an object of type ‘class OpenImageIO_v2_2::ustring’ with no trivial copy-assignment; use copy-assignment or copy-initialization instead [-Wclass-memaccess]
  249 |         memcpy(newdata, data_, ((datasize_ < newcapacity) ? datasize_ : newcapacity) * sizeof(T));
      |         ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/martijn/progs/blender-git/lib/linux_centos7_x86_64/openimageio/include/OpenImageIO/attrdelegate.h:14,
                 from /home/martijn/progs/blender-git/lib/linux_centos7_x86_64/openimageio/include/OpenImageIO/paramlist.h:17,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/util/param.h:23,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node_enum.h:20,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node_type.h:19,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node.h:21,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/scene/geometry.h:20,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/id_map.h:22,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/sync.h:25,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object_cull.h:20,
                 from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object.cpp:17:
/home/martijn/progs/blender-git/lib/linux_centos7_x86_64/openimageio/include/OpenImageIO/ustring.h:108:16: note: ‘class OpenImageIO_v2_2::ustring’ declared here
  108 | class OIIO_API ustring {

While it's just a warning, it does look a bit scary. Maybe have a l,ook at it?

**System Information** Operating system: Graphics card: **Blender Version** Broken: 0a08ac2528eee972c4dc23554ffd088305e6ae92 Worked: Before that commit **Short description of error** When compiling I get the following compiler warning: ``` [1388/1553] Building CXX object intern/cycles/blender/CMakeFiles/bf_intern_cycles.dir/object.cpp.o In file included from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node_type.h:20, from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node.h:21, from /home/martijn/progs/blender-git/blender/intern/cycles/scene/geometry.h:20, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/id_map.h:22, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/sync.h:25, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object_cull.h:20, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object.cpp:17: /home/martijn/progs/blender-git/blender/intern/cycles/util/array.h: In instantiation of ‘void ccl::array<T, alignment>::reserve(size_t) [with T = OpenImageIO_v2_2::ustring; long unsigned int alignment = 16; size_t = long unsigned int]’: /home/martijn/progs/blender-git/blender/intern/cycles/util/array.h:266:7: required from ‘void ccl::array<T, alignment>::push_back_slow(const T&) [with T = OpenImageIO_v2_2::ustring; long unsigned int alignment = 16]’ /home/martijn/progs/blender-git/blender/intern/cycles/blender/object.cpp:539:49: required from here /home/martijn/progs/blender-git/blender/intern/cycles/util/array.h:249:15: warning: ‘void* memcpy(void*, const void*, size_t)’ writing to an object of type ‘class OpenImageIO_v2_2::ustring’ with no trivial copy-assignment; use copy-assignment or copy-initialization instead [-Wclass-memaccess] 249 | memcpy(newdata, data_, ((datasize_ < newcapacity) ? datasize_ : newcapacity) * sizeof(T)); | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /home/martijn/progs/blender-git/lib/linux_centos7_x86_64/openimageio/include/OpenImageIO/attrdelegate.h:14, from /home/martijn/progs/blender-git/lib/linux_centos7_x86_64/openimageio/include/OpenImageIO/paramlist.h:17, from /home/martijn/progs/blender-git/blender/intern/cycles/util/param.h:23, from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node_enum.h:20, from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node_type.h:19, from /home/martijn/progs/blender-git/blender/intern/cycles/graph/node.h:21, from /home/martijn/progs/blender-git/blender/intern/cycles/scene/geometry.h:20, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/id_map.h:22, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/sync.h:25, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object_cull.h:20, from /home/martijn/progs/blender-git/blender/intern/cycles/blender/object.cpp:17: /home/martijn/progs/blender-git/lib/linux_centos7_x86_64/openimageio/include/OpenImageIO/ustring.h:108:16: note: ‘class OpenImageIO_v2_2::ustring’ declared here 108 | class OIIO_API ustring { ``` While it's just a warning, it *does* look a bit scary. Maybe have a l,ook at it?

Martijn Versteegh commented

2022-01-17 23:50:26 +01:00

Added subscriber: @Baardaap

Julian Eisel was assigned by Martijn Versteegh

2022-01-17 23:51:56 +01:00

Martijn Versteegh commented

2022-01-18 00:06:17 +01:00

Changed status from 'Needs Triage' to: 'Archived'

Martijn Versteegh closed this issue

2022-01-18 00:06:17 +01:00

Martijn Versteegh commented

2022-01-18 00:06:17 +01:00

hm, something went wrong with my bisecting. it appears to be from a different commit. Will look into it later

Julian Eisel was unassigned by Martijn Versteegh

2022-01-18 00:06:37 +01:00

Martijn Versteegh commented

2022-01-18 00:06:37 +01:00

Added subscriber: @JulianEisel

Martijn Versteegh changed title from ~~Compile error on linux since be8f10a4e2172eb686863998d1a8df904463ab21~~ to Compile warning on linux since 0a08ac2528eee972c4dc23554ffd088305e6ae92

2022-01-18 13:35:04 +01:00

Martijn Versteegh commented

2022-01-18 13:35:04 +01:00

Added subscriber: @kevindietrich
Removed subscriber: @JulianEisel

Added subscriber: @kevindietrich Removed subscriber: @JulianEisel

Martijn Versteegh commented

2022-01-18 13:35:15 +01:00

Changed status from 'Archived' to: 'Needs Triage'

Martijn Versteegh reopened this issue

2022-01-18 13:35:15 +01:00

Martijn Versteegh commented

2022-01-18 13:38:12 +01:00

hi Kévin, it turned out to be caused by your commit. Maybe you could decide if it's harmful?

Richard Antalik commented

2022-01-18 17:31:49 +01:00

Added subscriber: @iss

Richard Antalik commented

2022-01-18 17:31:49 +01:00

Changed status from 'Needs Triage' to: 'Archived'

Richard Antalik closed this issue

2022-01-18 17:31:49 +01:00

Richard Antalik commented

2022-01-18 17:31:49 +01:00

I would suggest to handle this on https://blender.chat/channel/blender-coders or comment on commit 0a08ac2528 directly

Closing since this tracker is only for bugs.

I would suggest to handle this on https://blender.chat/channel/blender-coders or comment on commit 0a08ac2528 directly Closing since this tracker is only for bugs.

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Compile warning on linux since 0a08ac2528 #94992

Compile warning on linux since `0a08ac2528` #94992