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* Release notes for 8.6.4wip/ghc-8.6-backportsBen Gamari2019-01-102-0/+65
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* Fix recompilation bug with default class methods (#15970)Simon Marlow2019-01-077-13/+134
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a module uses a class, then it can instantiate the class and thereby use its default methods, so we must include the default methods when calculating the fingerprint for the class. Test Plan: New unit test: driver/T15970 Before: ``` =====> T15970(normal) 1 of 1 [0, 0, 0] cd "T15970.run" && $MAKE -s --no-print-directory T15970 Wrong exit code for T15970()(expected 0 , actual 2 ) Stdout ( T15970 ): Makefile:13: recipe for target 'T15970' failed Stderr ( T15970 ): C.o:function Main_zdfTypeClassMyDataType1_info: error: undefined reference to 'A_toTypedData2_closure' C.o:function Main_main1_info: error: undefined reference to 'A_toTypedData2_closure' C.o(.data+0x298): error: undefined reference to 'A_toTypedData2_closure' C.o(.data+0x480): error: undefined reference to 'A_toTypedData2_closure' collect2: error: ld returned 1 exit status `gcc' failed in phase `Linker'. (Exit code: 1) ``` After: test passes. Reviewers: bgamari, simonpj, erikd, watashi, afarmer Subscribers: rwbarton, carter GHC Trac Issues: #15970 Differential Revision: https://phabricator.haskell.org/D5394 (cherry picked from commit 288f681e06accbae690c46eb8a6e997fa9e5f56a)
* testsuite: Mark objcpp-hi and T13366 as broken on Darwin due to #16083Ben Gamari2018-12-302-1/+5
| | | | (cherry picked from commit 1c0c5e844226f3d77af31d97b21ffb8b14b55740)
* testsuite: Mark heapprof001 as broken in prof_hc_hb way on i386Ben Gamari2018-12-301-1/+3
| | | | | | | | As documented in #15382, this is known to fail in prof_hc_hb on i386. Concerningly, I have also seen this test non-deterministically fail in prof_hc_hb on amd64. We should really investigate this. (cherry picked from commit 8fd3f9a67f9c7b447a5bfcb3aefd8986794918ce)
* gitlab-ci: Allow integer-simple and unregisterised builds to failBen Gamari2018-12-291-0/+3
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* testsuite: Skip ffi018_ghci when unregisterisedBen Gamari2018-12-291-0/+2
| | | | | | As noted in #16085 this test is fragile in unregisterised compilers. (cherry picked from commit 7bfc1e81377d1e37069cf52bd090530124dcd871)
* gitlab-ci: Skip performance testsBen Gamari2018-12-271-1/+1
| | | | These are just too fragile on ghc-8.6 which lacks #12758.
* Grab CI configuration from masterBen Gamari2018-12-2723-109/+1457
| | | | | This is awfully ugly but is nevertheless significantly less error-prone than cherry-picking all of the relevant commits manually.
* Revert "Windows: Use the "big" PE object format on amd64"Ben Gamari2018-12-231-37/+1
| | | | | | This ended up breaking GHCi due to alignment issues. See #16071. This reverts commit ed86e3b531322f74d2c2d00d7ff8662b08fabde6.
* utils/gen-dll: Bump containers upper boundBen Gamari2018-12-151-1/+1
| | | | | | Fixes #16023. (cherry picked from commit e709c8f8d45c699840f5bab7c9ff71373a53b8b0)
* Release 8.6.3ghc-8.6.3-releaseBen Gamari2018-12-061-2/+2
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* users guide: Add release notes for 8.6.3Ben Gamari2018-12-062-0/+72
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* Windows: Use the "big" PE object format on amd64Ben Gamari2018-12-061-1/+37
| | | | | | | | | | | | | | | | Test Plan: Do full build on Windows. Reviewers: AndreasK, Phyx Reviewed By: AndreasK Subscribers: rwbarton, erikd, carter GHC Trac Issues: #15934 Differential Revision: https://phabricator.haskell.org/D5383 (cherry picked from commit 1ef90f990da90036d481c830d8832e21b8f1571b)
* linker: store entire link map and use it.Tamar Christina2018-12-0610-21/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This fixes a corner case in which we have seen the symbol multiple times in different static libraries, but due to a depencency we end up loading the symbol from a library other than the first one. Previously the runtime linker would only track symbols from the first library and did not store the full link map. In this case it was unable to find the address for the symbols in the second library during delay loading. This change stores the address of all symbols seen so a full link map is generated, such that when we make a different decision later than what was expected we're able to still correctly load the library. Test Plan: ./validate, new testcase T15894 Reviewers: angerman, bgamari, erikd, simonmar Reviewed By: bgamari Subscribers: rwbarton, carter GHC Trac Issues: #15894 Differential Revision: https://phabricator.haskell.org/D5353 (cherry picked from commit a8b7cef4d45a5003bf7584e06912f0f632116c71)
* Bump iserv versionsBen Gamari2018-12-062-2/+2
| | | | | This fixes #15866, the original fix for which didn't merge cleanly to the stable branch.
* Remove explicit recursion in retainer profiling (fixes #14758)Alexander Vershilov2018-12-061-77/+146
| | | | | | | | | | | | | | | | | | | | | | | | | Retainer profiling contained a recursion that under certain circumstances could lead to the stack overflow in C code. The idea of the improvement is to keep an explicit stack for the object, more precise to reuse existing stack, but allow new type of objects to be stored there. There is no reliable reproducer that is not a big program but in some cases foldr (+) 0 [1..10000000] can work. Reviewers: bgamari, simonmar, erikd, osa1 Reviewed By: bgamari, osa1 Subscribers: osa1, rwbarton, carter GHC Trac Issues: #14758 Differential Revision: https://phabricator.haskell.org/D5351 (cherry picked from commit 5f1d949ab9e09b8d95319633854b7959df06eb58)
* Fix #15859 by checking, not assuming, an ArgFlagRichard Eisenberg2018-11-224-6/+24
| | | | | | | | | | | | We thought that visible dependent quantification was impossible in terms, but Iceland Jack discovered otherwise in #15859. This fixes an ASSERT failure that arose. test case: dependent/should_fail/T15859 (cherry picked from commit 72b82343b79365dc74ffafb345dd33499a7fd394) (cherry picked from commit 5693ddd071033516a1804420a903cb7e3677682b)
* base: Mention openFile throwing does-not-exist-errors on FIFOsBen Gamari2018-11-221-2/+4
| | | | | | | | | | | | | | | | | | | | As discussed in #15715, the POSIX specification specifies that attempting to open a FIFO in write-only mode when the FIFO has no readers will fail with -ENOENT. [skip ci] Test Plan: Read it Reviewers: hvr Subscribers: rwbarton, carter GHC Trac Issues: #15715 Differential Revision: https://phabricator.haskell.org/D5295 (cherry picked from commit 4ba3fa31ddfa12b428bd67216a2d4118dc9e8311)
* Revert "libiserv: Generate cabal file with autoconf"Ben Gamari2018-11-222-2/+2
| | | | This reverts commit cbde2726f10b8f4c19483bbb755ad42356098c51.
* rts/MachO: Iterate through N (all) symbols, not M external symbolsDario Bertini2018-11-221-1/+1
| | | | | | Fixes #15105 (cherry picked from commit 254890855ee04762cc0392da19e0c42fc039a718)
* rts/MachO: A bit of refactoring in ocGetNamesDario Bertini2018-11-221-8/+7
| | | | | | Eliminates a bit of repetition. (cherry picked from commit b2f6f896a0bae0e68ec629bd6817a2cb2533a12c)
* rts/MachO: Add a bit more debugging output to getNamesDario Bertini2018-11-221-4/+7
| | | | (cherry picked from commit 9e0a23b95c285c4019fd2d36102374ee582f1dcb)
* circleci: Actually build with in-tree GMP on DarwinDario Bertini2018-11-222-3/+2
| | | | | | Fixes #15404. (cherry picked from commit 3584bd4255eb59be043252c9b4ef16bcbd835c9b)
* Fix a bug in SRT generation (#15892)Simon Marlow2018-11-223-1/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: The logic in `Note [recursive SRTs]` was correct. However, my implementation of it wasn't: I got the associativity of `Set.difference` wrong, which led to an extremely subtle and difficult to find bug. Fortunately now we have a test case. I was able to cut down the code to something manageable, and I've added it to the test suite. Test Plan: Before (using my stage 1 compiler without the fix): ``` ====> T15892(normal) 1 of 1 [0, 0, 0] cd "T15892.run" && "/home/smarlow/ghc/inplace/bin/ghc-stage1" -o T15892 T15892.hs -dcore-lint -dcmm-lint -no-user-package-db -rtsopts -fno-warn-missed-specialisations -fshow-warning-groups -fdiagnostics-color=never -fno-diagnostics-show-caret -Werror=compat -dno-debug-output -O cd "T15892.run" && ./T15892 +RTS -G1 -A32k -RTS Wrong exit code for T15892(normal)(expected 0 , actual 134 ) Stderr ( T15892 ): T15892: internal error: evacuate: strange closure type 0 (GHC version 8.7.20181113 for x86_64_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Aborted (core dumped) *** unexpected failure for T15892(normal) =====> T15892(g1) 1 of 1 [0, 1, 0] cd "T15892.run" && "/home/smarlow/ghc/inplace/bin/ghc-stage1" -o T15892 T15892.hs -dcore-lint -dcmm-lint -no-user-package-db -rtsopts -fno-warn-missed-specialisations -fshow-warning-groups -fdiagnostics-color=never -fno-diagnostics-show-caret -Werror=compat -dno-debug-output -O cd "T15892.run" && ./T15892 +RTS -G1 -RTS +RTS -G1 -A32k -RTS Wrong exit code for T15892(g1)(expected 0 , actual 134 ) Stderr ( T15892 ): T15892: internal error: evacuate: strange closure type 0 (GHC version 8.7.20181113 for x86_64_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Aborted (core dumped) ``` After (using my stage 2 compiler with the fix): ``` =====> T15892(normal) 1 of 1 [0, 0, 0] cd "T15892.run" && "/home/smarlow/ghc/inplace/test spaces/ghc-stage2" -o T15892 T15892.hs -dcore-lint -dcmm-lint -no-user-package-db -rtsopts -fno-warn-missed-specialisations -fshow-warning-groups -fdiagnostics-color=never -fno-diagnostics-show-caret -Werror=compat -dno-debug-output cd "T15892.run" && ./T15892 +RTS -G1 -A32k -RTS =====> T15892(g1) 1 of 1 [0, 0, 0] cd "T15892.run" && "/home/smarlow/ghc/inplace/test spaces/ghc-stage2" -o T15892 T15892.hs -dcore-lint -dcmm-lint -no-user-package-db -rtsopts -fno-warn-missed-specialisations -fshow-warning-groups -fdiagnostics-color=never -fno-diagnostics-show-caret -Werror=compat -dno-debug-output cd "T15892.run" && ./T15892 +RTS -G1 -RTS +RTS -G1 -A32k -RTS ``` Reviewers: bgamari, osa1, erikd Reviewed By: osa1 Subscribers: rwbarton, carter GHC Trac Issues: #15892 Differential Revision: https://phabricator.haskell.org/D5334
* Load plugins in interactive sessionChristiaan Baaij2018-11-2214-6/+112
| | | | | | | | | | | | | | Reviewers: bgamari, tdammers Reviewed By: tdammers Subscribers: monoidal, rwbarton, carter GHC Trac Issues: #15633 Differential Revision: https://phabricator.haskell.org/D5348 (cherry picked from commit 599eaada382d04722219bfc319bde94591be3fb1)
* rts/M32Alloc: Abort if m32 linker mmap failsBen Gamari2018-11-221-0/+3
| | | | | | Previously we should just blinding dereference a NULL pointer. (cherry picked from commit 86f6890e3689f2f75ecca8172eda0338fe3e9769)
* users guide: We no longer build libraries with -split-objsBen Gamari2018-11-221-1/+1
| | | | | | We now generally use split-sections instead. (cherry picked from commit f5fbecc85967218fd8ba6512f10eea2daf2812ac)
* Fix heap corruption during stable name allocationÖmer Sinan Ağacan2018-11-221-2/+13
| | | | | | | | | | | | | | | | | | | | | | | See #15906 for the problem. To fix we simply call `allocate()` instead of `ALLOC_PRIM()`. `allocate()` does not trigger GC when the nursery is full, instead it extends it. Test Plan: This validates. memo001 now passes with `-debug` compile parameter. I'll add another test that runs memo001 with `-debug` once I figure out how to use stdout files for multiple tests. Reviewers: simonmar, bgamari, erikd Reviewed By: simonmar Subscribers: rwbarton, carter GHC Trac Issues: #15906 Differential Revision: https://phabricator.haskell.org/D5342 (cherry picked from commit 691aa715cf43bf9d88ee32bca37e471bae35adfb)
* distrib/configure: Set RanlibCmdBen Gamari2018-11-071-0/+2
| | | | This fixes #15875.
* libiserv: Generate cabal file with autoconfBen Gamari2018-11-062-2/+2
| | | | | Previously the version number was set by hand. This seems like unnecessary busywork for what is mostly an internal library.
* Set RELEASE=NOBen Gamari2018-11-051-1/+1
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* integer-gmp: Fix TBA in changelogBen Gamari2018-11-021-1/+1
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* Don't lint erroneous programs.ghc-8.6.2-releaseRichard Eisenberg2018-11-024-2/+20
| | | | | | | | | | | | newFamInst lints its types. This is good. But it's not so good when there have been errors and thus recovery tycons are about. So we now don't. Fixes #15796. Test case: typecheck/should_fail/T15796 (cherry picked from commit 1f72a1c81368e34387aac38c0b1c59521cec58ec)
* Fix #15787 by squashing a coercion hole.Richard Eisenberg2018-11-024-1/+29
| | | | | | | | | | | | | | | In type-incorrect code, we can sometimes let a coercion hole make it through the zonker. If this coercion hole then ends up in the environment (e.g., in the type of a data constructor), then it causes trouble later. This patch avoids trouble by substituting the coercion hole for its representative CoVar. Really, any coercion would do, but the CoVar was very handy. test case: polykinds/T15787 (cherry picked from commit 4427315a65b25db22e1754d41b43dd4b782b022f)
* users-guide: Fix version numberBen Gamari2018-10-311-1/+1
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* users-guide: Note existence of #14251Ben Gamari2018-10-301-0/+10
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* Fix #15815 by parenthesizing the arguments to infix ~Ryan Scott2018-10-304-1/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An unfortunate consequence of commit b9483981d128f55d8dae3f434f49fa6b5b30c779 (`Remove HsEqTy and XEqTy`) is infix uses of `~` in TH quotes now desugar differently than before. In particular, we have that: ```haskell a ~ (Int -> Int) ``` Now desugars to: ```haskell HsOpTy a (~) (HsOpTy Int (->) Int) ``` Which GHC interprets as being: ```haskell a ~ Int -> Int ``` Or, equivalently: ```haskell (a ~ Int) -> Int ``` Which is different than what was intended! This is the cause of #15815. All of this has revealed that we likely need to renovate the way we desugar infix type operators to be more consistent with the treatment for infix expressions (see https://ghc.haskell.org/trac/ghc/ticket/15815#comment:5 for more on this.) Doing so would constitute a breaking change, however, so we will likely want to wait until another major GHC release to do this. In the meantime, this patch offers a non-invasive change to the way that infix uses of `~` are desugared. This makes the program in #15815 compile again by inserting extra `HsParTy`s around the arguments to `~` if they are lacking them. Test Plan: make test TEST=T15815 Reviewers: int-index, goldfire, bgamari Reviewed By: int-index Subscribers: int-e, rwbarton, carter GHC Trac Issues: #15815 Differential Revision: https://phabricator.haskell.org/D5274 (cherry picked from commit b8a797ecc34a309bd78f5a290e3554642a3a478a)
* Revert "Multiple fixes / improvements for LLVM backend"Ben Gamari2018-10-305-67/+61
| | | | | | | This reverts commit 73273be476a8cc6c13368660b042b3b0614fd928. Unfortunately we were unable to come to a fix that didn't sacrifice the ability to bootstrap GHC using the LLVM backend. Reverting for 8.6.2.
* Revert "Fix for T14251 on ARM"Ben Gamari2018-10-302-90/+39
| | | | This reverts commit 2e23e1c7de01c92b038e55ce53d11bf9db993dd4.
* users-guide: Fix typoBen Gamari2018-10-301-1/+1
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* Report a Wanted error even if there are Given onesSimon Peyton Jones2018-10-309-17/+85
| | | | | | | | | | | | | | | | | | | | | | We suppress some Given errors; see Note [Given errors] in TcErrors. But we must be careful not to suppress Wanted errors because of the presence of these Given errors -- else we might allow compilation to bogusly proceed The rubber hits the road in TcRnTypes.insolubleCt, where we don't want to treat Givens as insoluble, nor (and this is the new bit) Deriveds that arise from Givens. See Note [Given insolubles] in TcRnTypes. This fixes #15767. (cherry picked from commit 6b1102e2cfcffb265fd33cf8a99ab5e6b3f14906) Ben notes: I have folded some test output changes in `TEST="T12529 T12921 mc13 mc14"` into this patch that were not in the original.
* Fix TcType.anyRewritableTyVarNingning Xie2018-10-281-15/+11
| | | | | | | | | | | | | | | | | | | | | | | | | Summary: This patch fixes #15805, where we found that `TcType.anyRewritableTyVar` has one wrong case. Besides the fix, it also: - removed some unnecessary `ASSERT2(tcIsTcTyVar...)` in `TcType`, as now we have `tcIsTcTyVar = isTyVar`. - fixed some comments Test Plan: ./validate Reviewers: goldfire, simonpj, bgamari Reviewed By: simonpj Subscribers: rwbarton, carter GHC Trac Issues: #15805 Differential Revision: https://phabricator.haskell.org/D5263 (cherry picked from commit a7f64c6cbfc5562adff207945576d1c9db2a58d9)
* users-guide: Add release notes for 8.6.2Ben Gamari2018-10-282-0/+71
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* plugins: search for .a files if necessarysheaf2018-10-281-40/+38
| | | | | | | | | | | | | | | | | | | | Summary: on windows, plugins are loaded via .a files, but those paths were not being searched when loading plugins Test Plan: ./validate Reviewers: Phyx, bgamari Reviewed By: Phyx Subscribers: RyanGlScott, rwbarton, carter GHC Trac Issues: #15700 Differential Revision: https://phabricator.haskell.org/D5253 (cherry picked from commit 70298db16c3f0ea4adb603ccb2b5e93eb9c7a556)
* Comment out CONSTANT_FOLDED in GHC.NaturalChristiaan Baaij2018-10-282-30/+40
| | | | | | | | | | | | | | | | | | | | | | Summary: Although these functions were marked as CONSTANT_FOLDED, they did not have a corresponding builtinRule in PrelRules. The idea was probably to add them eventually, but this hasn't manifested so far. The plan is to eventually add builtin rules for these functions over Natural, so as a reminder we simply comment out the CONSTANT_FOLDED annotation instead of removing it completely. Reviewers: hvr, bgamari Reviewed By: bgamari Subscribers: rwbarton, carter Differential Revision: https://phabricator.haskell.org/D5267 (cherry picked from commit 3ec6fe8827956cc36b58cdf0bb1f5752eaa2a8ea)
* Fix integer overflow when encoding doubles (Trac #15271)Fangyi Zhou2018-10-283-4/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Ticket #15271 reports a case where 1e1000000000 is incorrectly converted to 0.0. After some investigation, I discovered the number is converted to rational correctly, but converting the ratio into a double introduced an error. Tracking down to how the conversion is done, I found the rts float implementation uses `ldexp`, whose signature is `double ldexp (double x, int exp);` The callsite passes an `I_` to the second argument, which is platform-dependent. On machines where `I_` is 64 bits and `int` is 32 bits, we observe integer overflow behaviour. Here is a mapping from rational to exponent with observations 1e646457008 -> 2147483645 (result = infinity, positive in int32) 1e646457009 -> 2147483648 (result = 0.0, overflow to negative in int32) 1e1000000000 -> 3321928042 (result = infinity, overflow to positive in int32) 1e1555550000 -> 5167425196 (result = 0.0, overflow to negative in int32) We fix this issue by comparing STG_INT_MIN/MAX and INT_MIN/MAX and bound the value appropriately. Test Plan: New test cases Reviewers: bgamari, erikd, simonmar Reviewed By: bgamari Subscribers: rwbarton, carter GHC Trac Issues: #15271 Differential Revision: https://phabricator.haskell.org/D5271 (cherry picked from commit 311a63979cfa2c1e81be54b82205e681f6ec4f14)
* Fix `:k` command: add validity checkingNingning Xie2018-10-286-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | Summary: This patch fixes #15806, where we found that the `:k` command in GHCi misses a validity checking for the type. Missing validity checking causes `:k` to accept types that are not validated. For example, `:k (Maybe (forall a. a -> a))` (incorrectly) returns `*`, while impredictivity of type instantiation shouldn't be allowed. Test Plan: ./validate Reviewers: simonpj, goldfire, bgamari Reviewed By: bgamari Subscribers: rwbarton, carter GHC Trac Issues: #15806 Differential Revision: https://phabricator.haskell.org/D5265 (cherry picked from commit 12cb5cf50b8b35394e2e2d57e1ac693c76f90833)
* includes: Allow headers to be built with C++11 compilersBen Gamari2018-10-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Summary: Fixes #14784. Note that C++11 is quite conservative; we could likely accept C++03 as well. Test Plan: ``` $ cat >hi.c <<EOF #include <Rts.h> EOF $ g++ -std=c++11 hi.c ``` Reviewers: simonmar, hvr Subscribers: rwbarton, carter GHC Trac Issues: #14784 Differential Revision: https://phabricator.haskell.org/D5244 (cherry picked from commit d3a1022fabb0ad337003fac774c6929f402ecb8b)
* Fix rare undefined asm temp end label error in x86Zejun Wu2018-10-281-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Encountered assembly error due to undefined label `.LcaDcU_info_end` for following code generated by `pprFrameProc`: ``` .Lsat_sa8fp{v}_info_fde_end: .long .Lblock{v caDcU}_info_fde_end-.Lblock{v caDcU}_info_fde .Lblock{v caDcU}_info_fde: .long _nbHlD-.Lsection_frame .quad block{v caDcU}_info-1 .quad .Lblock{v caDcU}_info_end-block{v caDcU}_info+1 .byte 1 ``` This diff fixed the error. Test Plan: ./validate Also the case where we used to have assembly error is now fixed. Unfortunately, I have limited insight here and cannot get a small enough repro or test case for this. Ben says: > I think I see: Previously we only produced end symbols for the info > tables of top-level procedures. However, blocks within a procedure may > also have info tables, we will dutifully generate debug information for > and consequently we get undefined symbols. Reviewers: simonmar, scpmw, last_g, bgamari Reviewed By: bgamari Subscribers: rwbarton, carter Differential Revision: https://phabricator.haskell.org/D5246 (cherry picked from commit cf961dcf5ebc26cbd960196ba387736334088303)
* Fix for T14251 on ARMKavon Farvardin2018-10-282-39/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | We now calculate the SSE register padding needed to fix the calling convention in LLVM in a robust way: grouping them by whether registers in that class overlap (with the same class overlapping itself). My prior patch assumed that no matter the platform, physical register Fx aliases with Dx, etc, for our calling convention. This is unfortunately not the case for any platform except x86-64. Test Plan: Only know how to test on x86-64, but it should be tested on ARM with: `make test WAYS=llvm && make test WAYS=optllvm` Reviewers: bgamari, angerman Reviewed By: bgamari Subscribers: rwbarton, carter GHC Trac Issues: #15780, #14251, #15747 Differential Revision: https://phabricator.haskell.org/D5254 (cherry picked from commit c36a2b596a6ba9d7a0a80df01b3c041720c727ca)
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