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thirdparty/zstd.git
5 years agoFix 2 bugs in dictionary loading 1864/head
Nick Terrell [Fri, 1 Nov 2019 22:33:39 +0000 (15:33 -0700)] 
Fix 2 bugs in dictionary loading

* Silently skip dictionaries less than 8 bytes, unless using `ZSTD_dct_fullDict`.
  This changes the compressor, which silently skips dictionaries <= 8 bytes.
* Allow repcodes that are equal to the dictionary content size, since it is in bounds.

5 years ago[fuzz] Add dictionary_loader fuzzer
Nick Terrell [Fri, 1 Nov 2019 22:16:24 +0000 (15:16 -0700)] 
[fuzz] Add dictionary_loader fuzzer

* Adds the fuzzer
* Adds an additional `InputType` for the fuzzer

I ran the fuzzer for about 10 minutes and it found 2 bugs:

* Catches the original bug without any help
* Catches an additional bug with 8-byte dictionaries

5 years agofixed zlibwrapper build script 1859/head
Yann Collet [Thu, 31 Oct 2019 17:47:06 +0000 (10:47 -0700)] 
fixed zlibwrapper build script

5 years agoMerge pull request #1860 from senhuang42/streaming_compression_using_cdict
Yann Collet [Wed, 30 Oct 2019 23:27:58 +0000 (16:27 -0700)] 
Merge pull request #1860 from senhuang42/streaming_compression_using_cdict

Disable reloading dictionary when there is no known srcSize

5 years agoMake sure contentsize is known 1860/head
Sen Huang [Wed, 30 Oct 2019 20:03:58 +0000 (16:03 -0400)] 
Make sure contentsize is known

5 years agoMerge pull request #1857 from 0x123456789A/link-shared
Felix Handte [Wed, 30 Oct 2019 19:43:11 +0000 (15:43 -0400)] 
Merge pull request #1857 from 0x123456789A/link-shared

Add CMake flag for linking programs dynamically

5 years agoMerge pull request #1850 from bimbashrestha/named_pipes
Yann Collet [Wed, 30 Oct 2019 19:18:58 +0000 (12:18 -0700)] 
Merge pull request #1850 from bimbashrestha/named_pipes

Gating named pipe support on windows

5 years agoupdated CHANGELOG for v1.4.4
Yann Collet [Wed, 30 Oct 2019 19:16:45 +0000 (12:16 -0700)] 
updated CHANGELOG for v1.4.4

5 years agoMerge pull request #1855 from shashank0791/shtavi-filter-precompressed-files
Yann Collet [Wed, 30 Oct 2019 19:14:41 +0000 (12:14 -0700)] 
Merge pull request #1855 from shashank0791/shtavi-filter-precompressed-files

Added "--exclude-compressed" flag feature

5 years agoRemoved the optimization check 1855/head
Shashank Tavildar [Tue, 29 Oct 2019 22:59:20 +0000 (15:59 -0700)] 
Removed the optimization check

5 years agoChanged extension comparision logic, added new test cases
Shashank Tavildar [Tue, 29 Oct 2019 20:36:09 +0000 (13:36 -0700)] 
Changed extension comparision logic, added new test cases

5 years agoAdded check to perform comparison only if extension is present
Shashank Tavildar [Tue, 29 Oct 2019 19:56:04 +0000 (12:56 -0700)] 
Added check to perform comparison only if extension is present

5 years agoCreated utility function to extract extension from filename, fixed tests
Shashank Tavildar [Tue, 29 Oct 2019 19:27:54 +0000 (12:27 -0700)] 
Created utility function to extract extension from filename, fixed tests

5 years agoDeleting test directory before creation to pass travis-ci test
Shashank Tavildar [Tue, 29 Oct 2019 16:54:54 +0000 (09:54 -0700)] 
Deleting test directory before creation to pass travis-ci test

5 years agoMerge branch 'named_pipes' of https://github.com/bimbashrestha/zstd into named_pipes 1850/head
Bimba Shrestha [Tue, 29 Oct 2019 16:46:28 +0000 (09:46 -0700)] 
Merge branch 'named_pipes' of https://github.com/bimbashrestha/zstd into named_pipes

5 years agoRemoving merge side effect
Bimba Shrestha [Tue, 29 Oct 2019 16:45:28 +0000 (09:45 -0700)] 
Removing merge side effect

5 years agoFixed check for building programs statically 1857/head
0x123456789A [Tue, 29 Oct 2019 13:41:32 +0000 (14:41 +0100)] 
Fixed check for building programs statically

5 years agoConsider ZSTD_PROGRAMS_LINK_SHARED
0x123456789A [Tue, 29 Oct 2019 13:33:50 +0000 (14:33 +0100)] 
Consider ZSTD_PROGRAMS_LINK_SHARED

Actually consider ZSTD_PROGRAMS_LINK_SHARED in programs CMakeLists

5 years agoIntroduce ZSTD_PROGRAMS_LINK_SHARED
0x123456789A [Tue, 29 Oct 2019 13:31:02 +0000 (14:31 +0100)] 
Introduce ZSTD_PROGRAMS_LINK_SHARED

The CMake variable ZSTD_PROGRAMS_LINK_SHARED indicactes wether or not to link the zstd programs dynamically or statically.

5 years agoMinor fixes in test
Shashank Tavildar [Tue, 29 Oct 2019 05:24:01 +0000 (22:24 -0700)] 
Minor fixes in test

5 years agoMerge branch 'dev' into named_pipes
Bimba Shrestha [Tue, 29 Oct 2019 05:17:13 +0000 (01:17 -0400)] 
Merge branch 'dev' into named_pipes

5 years agoRemoving Visual08 and Visual10 tests
Bimba Shrestha [Tue, 29 Oct 2019 05:09:34 +0000 (22:09 -0700)] 
Removing Visual08 and Visual10 tests

5 years agoMerge pull request #1856 from terrelln/assert-fix
Nick Terrell [Tue, 29 Oct 2019 04:44:22 +0000 (21:44 -0700)] 
Merge pull request #1856 from terrelln/assert-fix

Fix assert in ZSTD_safecopy

5 years agoAddressing comments, removing cyclic dependency with header file, updating tests
Shashank Tavildar [Tue, 29 Oct 2019 01:21:47 +0000 (18:21 -0700)] 
Addressing comments, removing cyclic dependency with header file, updating tests

5 years agoFix assert in ZSTD_safecopy 1856/head
Nick Terrell [Tue, 29 Oct 2019 00:51:17 +0000 (17:51 -0700)] 
Fix assert in ZSTD_safecopy

In the case that `op >= oend_w` it is possible that `diff < 8` because
the two buffers could be adjacent.

Credit to OSS-Fuzz, which found the bug. It isn't reproducible because
it depends on the memory layout.

5 years agoFixing tests and moving flag to advanced usage 1852/head
Shashank Tavildar [Mon, 28 Oct 2019 22:22:26 +0000 (15:22 -0700)] 
Fixing tests and moving flag to advanced usage

5 years agoResolving local merge conflicts
Shashank Tavildar [Mon, 28 Oct 2019 22:15:13 +0000 (15:15 -0700)] 
Resolving local merge conflicts

5 years agoAddressing comments: -Created a list of extensions defined in fileio.h, -Updated...
Shashank Tavildar [Mon, 28 Oct 2019 21:54:54 +0000 (14:54 -0700)] 
Addressing comments: -Created a list of extensions defined in fileio.h, -Updated test

5 years agoAdded --exclude-compressed flag feature that skips compression of precompressed files
Shashank Tavildar [Fri, 25 Oct 2019 22:49:11 +0000 (15:49 -0700)] 
Added --exclude-compressed flag feature that skips compression of precompressed files

5 years agoMerge branch 'dev' of github.com:facebook/zstd into dev
Yann Collet [Mon, 28 Oct 2019 19:57:23 +0000 (12:57 -0700)] 
Merge branch 'dev' of github.com:facebook/zstd into dev

5 years agoupdated CHANGELOG for v1.4.4
Yann Collet [Mon, 28 Oct 2019 19:57:05 +0000 (12:57 -0700)] 
updated CHANGELOG for v1.4.4

5 years agoMerge pull request #1851 from felixhandte/pkg-config-prefix-fix
Felix Handte [Mon, 28 Oct 2019 18:24:56 +0000 (14:24 -0400)] 
Merge pull request #1851 from felixhandte/pkg-config-prefix-fix

In pkg-config File, Derive Lib and Include Dir from Prefix at Use-Time

5 years agoupdated API inline doc and manual
Yann Collet [Mon, 28 Oct 2019 18:15:41 +0000 (11:15 -0700)] 
updated API inline doc and manual

regarding ZSTD_CDict created without a dictBuffer.

5 years agoMerge pull request #1848 from felixhandte/tzst-ext-tmp
Yann Collet [Mon, 28 Oct 2019 17:08:20 +0000 (10:08 -0700)] 
Merge pull request #1848 from felixhandte/tzst-ext-tmp

Support Decompressing Short Tar Extensions

5 years agoMerge pull request #1847 from facebook/zlibwrap_visual
Yann Collet [Sat, 26 Oct 2019 00:42:42 +0000 (17:42 -0700)] 
Merge pull request #1847 from facebook/zlibwrap_visual

fix zlibWrapper for Visual Studio

5 years agoAdded --exclude-compressed flag feature that skips compression of precompressed files
Shashank Tavildar [Fri, 25 Oct 2019 22:49:11 +0000 (15:49 -0700)] 
Added --exclude-compressed flag feature that skips compression of precompressed files

5 years agoMerge branch 'master' of https://github.com/bimbashrestha/zstd into named_pipes
Bimba Shrestha [Fri, 25 Oct 2019 22:43:41 +0000 (15:43 -0700)] 
Merge branch 'master' of https://github.com/bimbashrestha/zstd into named_pipes

5 years agoGating named pipe support in hedaer file
Bimba Shrestha [Fri, 25 Oct 2019 22:15:28 +0000 (15:15 -0700)] 
Gating named pipe support in hedaer file

5 years agoCleaning up gate and adding comment to flag
Bimba Shrestha [Fri, 25 Oct 2019 21:06:50 +0000 (14:06 -0700)] 
Cleaning up gate and adding comment to flag

5 years agoIn pkg-config File, Derive Lib and Include Dir from Prefix at Use-Time 1851/head
W. Felix Handte [Fri, 25 Oct 2019 19:05:20 +0000 (15:05 -0400)] 
In pkg-config File, Derive Lib and Include Dir from Prefix at Use-Time

Addresses #1794. Instead of deriving the lib dir and include dir at
build-time, let's do it like everyone else does at pkg-config run-time.

This has the disadvantage that we can no longer override LIBDIR and
INCLUDEDIR in the Makefile and have that reflected in the .pc file.

5 years agoMerge pull request #8 from bimbashrestha/appveyorTest
Bimba Shrestha [Fri, 25 Oct 2019 19:07:05 +0000 (12:07 -0700)] 
Merge pull request #8 from bimbashrestha/appveyorTest

Appveyor test

5 years agoRunning playtests.sh on PRs too
Bimba Shrestha [Fri, 25 Oct 2019 19:04:54 +0000 (12:04 -0700)] 
Running playtests.sh on PRs too

5 years agoGating named file support on windows
Bimba Shrestha [Fri, 25 Oct 2019 18:32:38 +0000 (11:32 -0700)] 
Gating named file support on windows

5 years agoMinor Fixes 1848/head
W. Felix Handte [Fri, 25 Oct 2019 17:58:58 +0000 (13:58 -0400)] 
Minor Fixes

5 years agoMerge pull request #1845 from facebook/zbuff
Yann Collet [Fri, 25 Oct 2019 16:59:00 +0000 (09:59 -0700)] 
Merge pull request #1845 from facebook/zbuff

improve deprecation warning macro

5 years agoAdd Tests
W. Felix Handte [Fri, 25 Oct 2019 00:19:10 +0000 (20:19 -0400)] 
Add Tests

5 years agoFix Build; Refactor
W. Felix Handte [Fri, 25 Oct 2019 00:18:57 +0000 (20:18 -0400)] 
Fix Build; Refactor

5 years agofix zlibWrapper for Visual Studio 1847/head
Yann Collet [Thu, 24 Oct 2019 22:19:05 +0000 (15:19 -0700)] 
fix zlibWrapper for Visual Studio

As per https://github.com/facebook/zstd/issues/1800#issuecomment-545945050,
Visual does not support `ssize_t` type,
which is an issue for `gzread.c`.

Added a work around, suggested by @bluenlive

Note : I have not been able to confirm the problem,
so this is a blind fix.
This seems safe outside of Visual, since it is gated by _MSC_VER macro.

5 years agoMerge pull request #1790 from stokito/tzst-ext
Felix Handte [Thu, 24 Oct 2019 21:50:22 +0000 (17:50 -0400)] 
Merge pull request #1790 from stokito/tzst-ext

Add short tar's extensions .tgz (.tar.gz), .txz (.tar.xz), .tzst (.tar.zst)

5 years agoMerge branch 'tzst-ext-tmp' into tzst-ext 1790/head
Felix Handte [Thu, 24 Oct 2019 21:49:34 +0000 (17:49 -0400)] 
Merge branch 'tzst-ext-tmp' into tzst-ext

5 years agoMerge pull request #1841 from bimbashrestha/travis
Yann Collet [Thu, 24 Oct 2019 19:58:50 +0000 (12:58 -0700)] 
Merge pull request #1841 from bimbashrestha/travis

Adding arm64 make check to travis.ci

5 years agoMerge pull request #1839 from bimbashrestha/named_pipes
Yann Collet [Thu, 24 Oct 2019 17:53:12 +0000 (10:53 -0700)] 
Merge pull request #1839 from bimbashrestha/named_pipes

Allowing named pipes to go through in zstdcli

5 years agoMerge pull request #1824 from senhuang42/new_path_for_cdict
Yann Collet [Wed, 23 Oct 2019 19:04:40 +0000 (12:04 -0700)] 
Merge pull request #1824 from senhuang42/new_path_for_cdict

Avoid using CDict params when input is large.

5 years agoimprove deprecation warning macro 1845/head
Yann Collet [Wed, 23 Oct 2019 18:59:32 +0000 (11:59 -0700)] 
improve deprecation warning macro

fix #1488

although, curiously enough, I was never able to reproduce the issue
(according to the bug report, it should be present while using gcc 4.8).

5 years agoMoving arm64 test outside the meson scope 1841/head
Bimba Shrestha [Wed, 23 Oct 2019 17:43:20 +0000 (10:43 -0700)] 
Moving arm64 test outside the meson scope

5 years agoMerge pull request #1840 from terrelln/regression-fix
Nick Terrell [Wed, 23 Oct 2019 00:58:31 +0000 (17:58 -0700)] 
Merge pull request #1840 from terrelln/regression-fix

[regression] Fix the old streaming regression test

5 years agoAdding arm64 make check
Bimba Shrestha [Wed, 23 Oct 2019 00:43:29 +0000 (17:43 -0700)] 
Adding arm64 make check

5 years agoadded documentation on DYNAMIC_BMI2 build macro
Yann Collet [Wed, 23 Oct 2019 00:43:09 +0000 (17:43 -0700)] 
added documentation on DYNAMIC_BMI2 build macro

5 years agoMerge pull request #4 from facebook/dev
Bimba Shrestha [Wed, 23 Oct 2019 00:33:12 +0000 (17:33 -0700)] 
Merge pull request #4 from facebook/dev

Merging dev

5 years agoAdding shell test and removing bash test file 1839/head
Bimba Shrestha [Wed, 23 Oct 2019 00:09:44 +0000 (17:09 -0700)] 
Adding shell test and removing bash test file

5 years agoMerge pull request #1838 from facebook/fixAdvanced
Yann Collet [Tue, 22 Oct 2019 23:22:55 +0000 (16:22 -0700)] 
Merge pull request #1838 from facebook/fixAdvanced

fix initCStream_advanced() for fast strategies

5 years agoAdding bash test for named pipes
Bimba Shrestha [Tue, 22 Oct 2019 23:15:59 +0000 (16:15 -0700)] 
Adding bash test for named pipes

5 years ago[regression] Fix the old streaming regression test 1840/head
Nick Terrell [Tue, 22 Oct 2019 22:29:48 +0000 (15:29 -0700)] 
[regression] Fix the old streaming regression test

* A copy-paste error made it so we weren't running the advanced/cdict
  streaming tests with the old API.
* Clean up the old streaming tests to skip incompatible configs.
* Update `results.csv`.

The tests now catch the bug in #1787.

5 years agoAllowing named pipes to go through zstdcli
Bimba Shrestha [Tue, 22 Oct 2019 22:23:22 +0000 (15:23 -0700)] 
Allowing named pipes to go through zstdcli

5 years agoMerge pull request #1836 from facebook/dirFlat2
Yann Collet [Tue, 22 Oct 2019 22:19:04 +0000 (15:19 -0700)] 
Merge pull request #1836 from facebook/dirFlat2

Added --output-dir-flat=

5 years agofix initCStream_advanced() for fast strategies 1838/head
Yann Collet [Tue, 22 Oct 2019 21:57:15 +0000 (14:57 -0700)] 
fix initCStream_advanced() for fast strategies

Compression ratio of fast strategies (levels 1 & 2)
was seriously reduced, due to accidental disabling of Literals compression.

Credit to @QrczakMK, which perfectly described the issue, and implementation details,
making the fix straightforward.

Example : initCStream with level 1 on synthetic sample P50 :
Before : 5,273,976 bytes
After  : 3,154,678 bytes
ZSTD_compress (for comparison) : 3,154,550

Fix #1787.

To follow : refactor the test which was supposed to catch this issue (and failed)

5 years agoupdate documentation on deprecated functions
Yann Collet [Tue, 22 Oct 2019 20:51:18 +0000 (13:51 -0700)] 
update documentation on deprecated functions

mostly : note that these functions will soon generate deprecation warnings

5 years agoMerge pull request #1837 from terrelln/magic-isnt-real
Nick Terrell [Tue, 22 Oct 2019 17:50:14 +0000 (10:50 -0700)] 
Merge pull request #1837 from terrelln/magic-isnt-real

Fix ZSTD_f_zstd1_magicless for small data

5 years agoFix ZSTD_f_zstd1_magicless for small data 1837/head
Nick Terrell [Tue, 22 Oct 2019 02:42:14 +0000 (19:42 -0700)] 
Fix ZSTD_f_zstd1_magicless for small data

* Fix `ZSTD_FRAMEHEADERSIZE_PREFIX` and `ZSTD_FRAMEHEADERSIZE_MIN` to
  take a `format` parameter, so it is impossible to get the wrong size.
* Fix the places that called `ZSTD_FRAMEHEADERSIZE_PREFIX` without
  taking the format into account, which is now impossible by design.
* Call `ZSTD_frameHeaderSize_internal()` with `dctx->format`.
* The added tests catch both bugs in `ZSTD_decompressFrame()`.

Fixes #1813.

5 years ago((x or y) or z) == (x or y or z), remove brackets 1824/head
Sen Huang [Mon, 21 Oct 2019 23:16:50 +0000 (19:16 -0400)] 
((x or y) or z) == (x or y or z), remove brackets

5 years agoLine up comments :)
Sen Huang [Mon, 21 Oct 2019 23:12:15 +0000 (19:12 -0400)] 
Line up comments :)

5 years agoTrailing comma
Sen Huang [Mon, 21 Oct 2019 23:10:13 +0000 (19:10 -0400)] 
Trailing comma

5 years agoMerge branch 'dev' of github.com:senhuang42/zstd into new_path_for_cdict
Sen Huang [Mon, 21 Oct 2019 23:06:51 +0000 (19:06 -0400)] 
Merge branch 'dev' of github.com:senhuang42/zstd into new_path_for_cdict

5 years agomerge
Sen Huang [Mon, 21 Oct 2019 23:02:52 +0000 (19:02 -0400)] 
merge

5 years agoFix bad merge
Sen Huang [Mon, 21 Oct 2019 22:55:17 +0000 (18:55 -0400)] 
Fix bad merge

5 years agoMerge pull request #1831 from terrelln/zstdmt-bad-memset
Nick Terrell [Mon, 21 Oct 2019 22:53:57 +0000 (15:53 -0700)] 
Merge pull request #1831 from terrelln/zstdmt-bad-memset

[zstdmt] Don't memset the jobDescription

5 years agomerge
Sen Huang [Mon, 21 Oct 2019 22:46:17 +0000 (18:46 -0400)] 
merge

5 years agoAdded --output-dir-flat= 1836/head
Yann Collet [Mon, 21 Oct 2019 21:33:50 +0000 (14:33 -0700)] 
Added --output-dir-flat=

which is a preferred construction when applicable.

Also, added --output-dir-flat into man page.

5 years agoMerge pull request #1834 from facebook/winFix
Yann Collet [Mon, 21 Oct 2019 20:45:17 +0000 (13:45 -0700)] 
Merge pull request #1834 from facebook/winFix

Windows fixes

5 years agoturned off zlib tests during msan 1834/head
Yann Collet [Mon, 21 Oct 2019 19:55:39 +0000 (12:55 -0700)] 
turned off zlib tests during msan

since the local zlib library is not msan-instrumented

5 years agoAdded multiplier, renamed new enum to something more useful
Sen Huang [Mon, 21 Oct 2019 19:29:55 +0000 (15:29 -0400)] 
Added multiplier, renamed new enum to something more useful

5 years agoUpdated forceAttachDict param bounds
Sen Huang [Mon, 21 Oct 2019 02:01:08 +0000 (22:01 -0400)] 
Updated forceAttachDict param bounds

5 years agoAdd enum to decision process
Sen Huang [Sun, 20 Oct 2019 23:02:47 +0000 (19:02 -0400)] 
Add enum to decision process

5 years agoAdded support for forcing new CDict behavior and updated enum
Sen Huang [Sun, 20 Oct 2019 18:03:09 +0000 (14:03 -0400)] 
Added support for forcing new CDict behavior and updated enum

5 years agoChanged to int from BYTE
Sen Huang [Wed, 16 Oct 2019 19:06:02 +0000 (15:06 -0400)] 
Changed to int from BYTE

5 years agoChanged to int from BYTE
Sen Huang [Wed, 16 Oct 2019 19:05:29 +0000 (15:05 -0400)] 
Changed to int from BYTE

5 years agoTrailing whitespace
Sen Huang [Wed, 16 Oct 2019 14:31:27 +0000 (10:31 -0400)] 
Trailing whitespace

5 years agoFix test
Sen Huang [Wed, 16 Oct 2019 14:29:31 +0000 (10:29 -0400)] 
Fix test

5 years agoCast to BYTE to appease appveyor
Sen Huang [Tue, 15 Oct 2019 17:58:44 +0000 (13:58 -0400)] 
Cast to BYTE to appease appveyor

5 years agomerge conflicts round 2
Sen Huang [Tue, 15 Oct 2019 17:10:05 +0000 (13:10 -0400)] 
merge conflicts round 2

5 years agoformatting
Sen Huang [Tue, 15 Oct 2019 16:44:48 +0000 (12:44 -0400)] 
formatting

5 years agoFix error
Sen Huang [Tue, 15 Oct 2019 16:28:23 +0000 (12:28 -0400)] 
Fix error

5 years agoAdd compressionlevel to cdict
Sen Huang [Tue, 15 Oct 2019 14:22:06 +0000 (10:22 -0400)] 
Add compressionlevel to cdict

5 years agominor refactor of FIO_compressGzFrame()
Yann Collet [Mon, 21 Oct 2019 19:14:59 +0000 (12:14 -0700)] 
minor refactor of FIO_compressGzFrame()

mostly narrowing variables lifetime and mutability.

5 years agoMerge pull request #1795 from felixhandte/workspace-asan
Felix Handte [Mon, 21 Oct 2019 16:15:17 +0000 (12:15 -0400)] 
Merge pull request #1795 from felixhandte/workspace-asan

Add Poisoned Redzones to the Workspace When Compiling with ASAN

5 years agoUpdated forceAttachDict param bounds
Sen Huang [Mon, 21 Oct 2019 02:01:08 +0000 (22:01 -0400)] 
Updated forceAttachDict param bounds

5 years agoAdd enum to decision process
Sen Huang [Sun, 20 Oct 2019 23:02:47 +0000 (19:02 -0400)] 
Add enum to decision process

5 years agoAdded support for forcing new CDict behavior and updated enum
Sen Huang [Sun, 20 Oct 2019 18:03:09 +0000 (14:03 -0400)] 
Added support for forcing new CDict behavior and updated enum

5 years agoMerge pull request #1835 from facebook/format034
Yann Collet [Sat, 19 Oct 2019 12:24:42 +0000 (05:24 -0700)] 
Merge pull request #1835 from facebook/format034

clarifications for the FSE decoding table

5 years agoclarifications for the FSE decoding table 1835/head
Yann Collet [Sat, 19 Oct 2019 00:48:12 +0000 (17:48 -0700)] 
clarifications for the FSE decoding table

requested in #1782