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2016-01-15Merge branch 'hb/dialyzer/fix_opaque_type_parms/OTP-13237' into maintHans Bolinder
* hb/dialyzer/fix_opaque_type_parms/OTP-13237: dialyzer: Correct handling of parameters of opaque types
2016-01-15dialyzer: Correct handling of parameters of opaque typesHans Bolinder
Correction of commit d57f5e.
2016-01-14Merge branch 'sverk/trace-doc-typo' into maintSverker Eriksson
* sverk/trace-doc-typo: erts: Correct faulty doc for erlang:trace/3
2016-01-14erts: Correct faulty doc for erlang:trace/3Sverker Eriksson
The entire MFA tuple is replaced with 0, not just Arity.
2016-01-14Merge branch 'vinoski/dirty-sched-no-aux-work/OTP-13236' into maintRickard Green
* vinoski/dirty-sched-no-aux-work/OTP-13236: Do not allow aux work on dirty schedulers
2016-01-13Merge branch 'bjorn/compiler/map-bug/OTP-13231' into maintBjörn Gustavsson
* bjorn/compiler/map-bug/OTP-13231: Fix crash when attempting to update a fun as if it were a map
2016-01-13Merge branch 'hb/stdlib/fix_linter_no_module/OTP-13230' into maintHans Bolinder
* hb/stdlib/fix_linter_no_module/OTP-13230: stdlib: Fix linter crash due to missing -module declaration
2016-01-13stdlib: Fix linter crash due to missing -module declarationHans Bolinder
The Erlang Code Linter no longer crashes if there is a -deprecated() attribute but no -module() declaration. See also ERL-62 at bugs.erlang.org.
2016-01-13Merge branch 'hb/stdlib/fix_erl_eval/OTP-13228' into maintHans Bolinder
* hb/stdlib/fix_erl_eval/OTP-13228: stdlib: fix erl_eval not using non-local function handler
2016-01-13stdlib: fix erl_eval not using non-local function handlerHans Bolinder
See also ERL-32 at bugs.erlang.org. Thanks to Ben Paxton.
2016-01-12Fix crash when attempting to update a fun as if it were a mapBjörn Gustavsson
The following example would cause an internal consistency failure in the compiler: f() -> ok. update() -> (fun f/0)#{u => 42}. The reason is that internally, v3_core will (incorrectly) rewrite update/0 to code similar to this: update() -> if is_map(fun f/0) -> maps:update(u, 42, fun f/0) end. Since funs are not allowed to be created in guards, incorrect and unsafe code would be generated. It is easy to fix the bug. There already is a is_valid_map_src/1 function in v3_core that tests whether the argument for the map update operation can possibly be a valid map. A fun is represented as a variable with a special name in Core Erlang, so it would not be recognized as unsafe. All we'll need to do to fix the bug is to look closer at variables to ensure they don't represent funs. That will ensure that the code is rewritten in the correct way: update() -> error({badmap,fun f/0}) end. Reported-by: Thomas Arts
2016-01-11Merge branch 'maint-18' into maintHenrik Nord
2016-01-11Eliminate crash in v3_codegenBjörn Gustavsson
The following code would crash v3_codegen: order(From) -> catch if From#{[] => sufficient} -> saint end. Before explaining the crash, first some background on the stack frame and the Y registers. Certain instructions, most notably the 'call' instructions, clobber all X registers. Before any such instruction, all X registers that have values that will be used after the call must be saved to Y registers (i.e. to the stack frame). adjust_stack/4 will be called when X registers must be saved. There is also another situation when X registers must be saved, namely within a 'catch' if we are about to execute any instruction that may cause an exception. Examples of such instructions are some guard BIFs (such as length/1) and construction of binaries or maps. Within a 'catch', X registers must be be saved because if an exception is thrown and catched all X registers will be destroyed. The same adjust_stack/4 function will be called for those instructions, but only if they occur within a 'catch'. There is actually one more complication. If there is code in a guard within a catch, the X registers should not be saved, because the code in a guard never clobbers any X registers that were alive before the guard code was entered. v3_codegen is written with the implicit assumption that code in guards never cause anything to be saved to Y registers. The code for building maps and binaries would incorrectly save X registers within a guard inside a 'catch'. For construction of binaries, that would mean that a useless but harmelss 'move' instruction was generated. But for construction of maps, the saving of the Y register would not be harmless. There would be a crash when attempting to merge #sr{} records. #sr{} records keeps track of the contents of X and Y registers. When two separate code paths are joined (e.g. at the end of 'case' statement), the register descriptors must be reconciled. Basically, the register descriptors for both paths must be identical. The #sr{} record for one path must not claim that {y,0} contains a certain value, while another path claims that {y,0} is dead. Thus, the crash occurs in sr_merge/2 when failing to reconcile the Y registers. To fix this bug this bug we will introduce a new function called maybe_adjust_stack/5. It will save X registers on the stack only if the code is inside a catch but not inside a guard. We will change all existing code to use this new function when appropriate. Reported-by: Thomas Arts
2016-01-08Updated OTP versionOTP-18.2.2Erlang/OTP
2016-01-08Update release notesErlang/OTP
2016-01-08Merge branch 'hans/ssh/keyboard_interactive0/OTP-13255' into maint-18Erlang/OTP
* hans/ssh/keyboard_interactive0/OTP-13255: ssh: update vsn.mk to 4.2.1 ssh: handle secondary ssh_msg_userauth_info_request message ssh: testcase for abnormal keyboard-interactive authentication
2016-01-08ssh: update vsn.mk to 4.2.1Hans Nilsson
2016-01-08ssh: handle secondary ssh_msg_userauth_info_request messageHans Nilsson
2016-01-08ssh: testcase for abnormal keyboard-interactive authenticationHans Nilsson
2016-01-07Merge branch 'bjorn/compiler/beam_bool/OTP-13208' into maintBjörn Gustavsson
* bjorn/compiler/beam_bool/OTP-13208: beam_bool: Fix unsafe optimization
2016-01-07beam_bool: Fix unsafe optimizationBjörn Gustavsson
beam_bool would make the following code unsafe (which would be reported by beam_validator): scotland(Echo) -> found(case Echo of Echo when true; Echo, Echo, Echo -> Echo; echo -> [] end, Echo = placed). found(_, _) -> million. Basically, beam_bool would see that the 'case' would always return the value of Echo. Thus: scotland(Echo) -> found(Echo, Echo = placed). The only problem is that beam_bool would also remove a 'move' instruction that would save Echo to the stack. Here is the assembly code for part of the function: {allocate_zero,1,1}. {move,{x,0},{y,0}}. %% Save Echo on stack. {bif,'=:=',{f,7},[{x,0},{atom,true}],{x,1}}. {bif,'=:=',{f,7},[{x,0},{atom,true}],{x,2}}. {bif,'=:=',{f,7},[{x,0},{atom,true}],{x,3}}. {bif,'and',{f,7},[{x,2},{x,3}],{x,2}}. {bif,'and',{f,7},[{x,1},{x,2}],{x,1}}. {jump,{f,8}}. {label,7}. {move,{atom,false},{x,1}}. {label,8}. {bif,'or',{f,6},[{atom,true},{x,1}],{x,1}}. {test,is_eq_exact,{f,6},[{x,1},{atom,true}]}. %% Jump never taken. {jump,{f,5}}. {label,6}. {test,is_eq_exact,{f,9},[{x,0},{atom,echo}]}. {move,nil,{x,0}}. {jump,{f,5}}. {label,9}. {test_heap,3,0}. {put_tuple,2,{x,0}}. {put,{atom,case_clause}}. {put,{y,0}}. {line,[{location,"t.erl",5}]}. {call_ext,1,{extfunc,erlang,error,1}}. {jump,{f,5}}. {label,5}. {test,is_eq_exact,{f,12},[{atom,placed},{y,0}]}. beam_bool would see that the is_eq_exact test at label 8 would always succeed. It could therefore remove most of the code before the jump to label 5. Unfortunately it also removed the essential move of Echo to the stack: {allocate_zero,1,1}. %% Instruction incorrectly removed: {move,{x,0},{y,0}}. {jump,{f,5}}. {label,5}. {test,is_eq_exact,{f,12},[{atom,placed},{y,0}]}. The root cause of the problem is that the 'move' instruction is included in the block of 'bif' instructions before label 8. Normally the 'move' instruction would not have been discarded, but because the left operand to the 'or' BIF is 'true', the entire block with 'bif' instructions are dropped. As far as I can see, there is no gain by including 'move' instructions in the first place. There is no way that better code will be produced. In fact, the entire optimization can be given up if 'move' instructions are found in the block. Thus we can fix this bug by never including any 'move' instructions in the block of 'bif' instructions. We can also remove all the code that deals with 'move' instructions within blocks. Reported-by: Thomas Arts
2015-12-30Merge branch 'rickard/rq-len/OTP-13201' into maintRickard Green
* rickard/rq-len/OTP-13201: Light weight statistics of run queue lengths
2015-12-30Light weight statistics of run queue lengthsRickard Green
- statistics(total_run_queue_lengths) - statistics(run_queue_lengths) - statistics(total_active_tasks) - statistics(active_tasks) Conflicts: erts/emulator/beam/erl_process.c
2015-12-30Merge branch 'rickard/trace_call_time/OTP-13216' into maintRickard Green
* rickard/trace_call_time/OTP-13216: Use monotonic time for call_time trace
2015-12-28Merge branch 'zandra/update-java-versions-doc' into maintZandra
* zandra/update-java-versions-doc: update java version in documentation OTp-13221
2015-12-28Merge branch 'binarin/maint' into maintZandra
* binarin/maint: Don't wait for twice the delay_write timeout OTP-13220
2015-12-28Merge branch 'legoscia/tls_dist_error_reporting' into maintZandra
* legoscia/tls_dist_error_reporting: Report bad options for outgoing TLS distribution Save error reasons for TLS distribution connections Report bad options for TLS distribution connections OTP-13219
2015-12-28Merge branch 'josevalim/jv-map-fun-eval-maint' into maintZandra
* josevalim/jv-map-fun-eval-maint: Use full list of bindings when matching on map keys OTP-13218
2015-12-28Merge branch 'lucafavatella/dialyzer-fun-call' into maintZandra
* lucafavatella/dialyzer-fun-call: Teach Dialyzer call to funs `M:F/A` (literal M, F, A) OTP-13217
2015-12-23Use monotonic time for call_time traceRickard Green
2015-12-22Merge branch 'maint-17' into maintAnders Svensson
2015-12-22Merge branch 'hans/ssh/ssh_benchmark_SUITE' into maintHans Nilsson
* hans/ssh/ssh_benchmark_SUITE: ssh: clean test specs
2015-12-22ssh: clean test specsHans Nilsson
2015-12-22Merge branch 'hans/ssh/cuddle_tests' into maintHans Nilsson
* hans/ssh/cuddle_tests: ssh: add econnaborted to disconnect msgs in test suite ssh: fix the check that open-ssh supports certain pubkeys in a test suite
2015-12-22Merge branch 'hans/ssh/ssh_benchmark_SUITE' into maintHans Nilsson
* hans/ssh/ssh_benchmark_SUITE: ssh: fix error (wrong suite) in test/ssh.spec
2015-12-22ssh: fix error (wrong suite) in test/ssh.specHans Nilsson
2015-12-21Do not allow aux work on dirty schedulersSteve Vinoski
The nature of aux work is such that dirty schedulers should not attempt to perform it. Modify the code to ensure that dirty schedulers avoid aux work. Also fix an incorrect assumption about the size of a Uint in the ErtsDirtySchedId type.
2015-12-21Merge branch 'maint-r16' into maintAnders Svensson
2015-12-21Merge branch 'hans/ssh/ssh_benchmark_SUITE' into maintHans Nilsson
* hans/ssh/ssh_benchmark_SUITE: ssh: benchmark all common kex and cipher algorithms New structure of the report ssh: ssh_benchmark_SUITE re-organized ssh: Add first version of ssh_benchmark_SUITE
2015-12-21ssh: benchmark all common kex and cipher algorithmsHans Nilsson
2015-12-21New structure of the reportHans Nilsson
2015-12-21ssh: ssh_benchmark_SUITE re-organizedHans Nilsson
2015-12-21ssh: Add first version of ssh_benchmark_SUITEHans Nilsson
2015-12-20Updated OTP versionOTP-17.5.6.7Erlang/OTP
2015-12-20Update release notesErlang/OTP
2015-12-20Merge branch 'anders/diameter/17.5.6.7/OTP-13211' into maint-17Erlang/OTP
* anders/diameter/17.5.6.7/OTP-13211: vsn -> 1.9.2.2 Update/fix appup for 17.5.6.7 Be resilient to diameter_service state upgrades
2015-12-20Merge branch 'anders/diameter/request_leak/OTP-13137' into maint-17Erlang/OTP
* anders/diameter/request_leak/OTP-13137: Fix request table leak at retransmission Fix request table leak at exit signal
2015-12-20Merge branch 'anders/diameter/17/watchdog/OTP-12969' into maint-17Erlang/OTP
* anders/diameter/17/watchdog/OTP-12969: Fix watchdog function_clause
2015-12-20Merge branch 'anders/diameter/M-bit/OTP-12947' into maint-17Erlang/OTP
* anders/diameter/M-bit/OTP-12947: Add service_opt() strict_mbit
2015-12-20vsn -> 1.9.2.2Anders Svensson
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