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2019-02-13Make dialyzer faster for left-associative andalso/orelse expressionsBjörn Gustavsson
https://bugs.erlang.org/browse/ERL-851
2019-01-30Eliminate bogus warning when using tuple callsBjörn Gustavsson
There would be a bogus warning when compiling the following function with the `tuple_calls` option: dispatch(X) -> (list_to_atom("prefix_" ++ atom_to_list(suffix))):doit(X). The warning would look like this: no_file: this expression will fail with a 'badarg' exception https://bugs.erlang.org/browse/ERL-838
2019-01-16Merge branch 'bjorn/compiler/beam_type/ERL_829/OTP-15518' into maintBjörn Gustavsson
* bjorn/compiler/beam_type/ERL_829/OTP-15518: beam_type: Eliminate compiler crash when arithmetic expression fails
2019-01-16Merge branch 'maint-21' into maintRickard Green
* maint-21: Updated OTP version Prepare release
2019-01-15Prepare releaseErlang/OTP
2019-01-14beam_type: Eliminate compiler crash when arithmetic expression failsBjörn Gustavsson
The compiler would crash when compiling code such as: (A / B) band 16#ff The type for the expression would be 'none', but beam_type:verified_type/1 did not handle 'none'. https://bugs.erlang.org/browse/ERL-829
2019-01-07Merge branch 'bjorn/compiler/interim-tuple-bug/OTP-15501/ERL-807' into maintBjörn Gustavsson
* bjorn/compiler/interim-tuple-bug/OTP-15501/ERL-807: Remove unsafe optimization for delaying creation of stackframe
2019-01-07Remove unsafe optimization for delaying creation of stackframeBjörn Gustavsson
b89044a800c4 introduced an optimization that tries to delay creation of stack frames. It turns out that this optimization is not always safe. (See the new test case for an example.) Since the code generator is completely rewritten in the `master` branch for the upcoming OTP 22 release, it does not make sense trying to mend this optimization. It is better to remove it. Out of a sample of about 1000 modules in OTP, about 50 of them are changed as a result of removing this optimization. The compiler in OTP 22 will do the same optimization in a cleaner, safer, and more effective way. https://bugs.erlang.org/browse/ERL-807
2018-12-12Add empty 'since' attribute for old modules and functionsSverker Eriksson
2018-12-11Add "since" attributes in xml for new functions and modulesSverker Eriksson
introduced after OTP_R13B03.
2018-12-10Prepare releaseErlang/OTP
2018-12-05Fix unsafe optimization of stack trace buildingBjörn Gustavsson
The `sys_core_fold` pass of the compiler would optimize away the building of the stacktrace in code such as: try ... catch C:R:Stk -> erlang:raise(C, {R,Stk}, Stk) end That optimization is unsafe and would cause a crash in a later compiler pass.
2018-11-20Fix internal consistency failure for is_function/2Björn Gustavsson
There could be an internal consistency failure when using is_function/2, because an optimization did not take into account that is_function/2 can fail. https://bugs.erlang.org/browse/ERL-778
2018-11-16Merge branch 'maint-21' into maintJohn Högberg
* maint-21: Updated OTP version Prepare release
2018-11-15Prepare releaseErlang/OTP
2018-10-31Fix bug when beam_jump removes put_tuple instructionsBjörn Gustavsson
`beam_jump` could remove a `put_tuple` instruction when the tuple would not be used, but it would leave the following `put` instructions. Make sure they are removed. https://bugs.erlang.org/browse/ERL-759
2018-10-16Merge branch 'john/compiler/bs_match-anno-liveness-fix/OTP-15353/ERL-753' ↵John Högberg
into maint * john/compiler/bs_match-anno-liveness-fix/OTP-15353/ERL-753: beam_utils: Handle bs_start_match2 in anno_defs
2018-10-15beam_utils: Handle bs_start_match2 in anno_defsJohn Högberg
2018-10-12Merge branch 'maint-21' into maintRickard Green
* maint-21: Updated OTP version Prepare release erts: Fix UNC path handling on Windows erts: Fix a compiler warning eldap: Fix race at socket close Fix bug for sockopt pktoptions on BSD erts: Fix memory leak on file read errors
2018-10-12Prepare releaseErlang/OTP
2018-10-05compiler: Forward +source flag to epp and fix bug in +deterministicJohn Högberg
The source file path as given to `erlc` was included in an implicit file attribute inserted by epp, even when the +source flag was set to something else which was a bit surprising. It was also included when +deterministic was specified, breaking the flag's promise. This commit forwards the +source flag to epp so it inserts the right information, and if +deterministic is given it will be shaved to just the base name of the file, guaranteeing the same result regardless of how the input is reached.
2018-09-28Fix rare bug in binary matching (again)Björn Gustavsson
2e40d8d1c51a attempted fix a bug in binary matching, but it only fixed the bug for the minimized test case. This commit removes the previous fix and fixes the bug in a more effective way. See the comments in the new code in `sys_core_bsm` for an explanation. This commit restores the optimizations in string.erl and dets_v9.erl that the previous fix disabled. I have not found any code where this commit will disable optimizations when they are actually safe. There are some changes to the code in ssl_cipher.erl in that some bs_start_match2 instruction did not reuse the binary register for the match context, but the delayed sub binary optimizations was never applied to the code in the first place. https://bugs.erlang.org/browse/ERL-689
2018-09-24Prepare releaseErlang/OTP
2018-09-21Update copyright yearHenrik Nord
2018-09-18Merge branch 'maint-20' into maintJohn Högberg
* maint-20: Updated OTP version Update release notes Update version numbers Fix include-path regression caused by dd0a39c
2018-09-12Merge branch 'maint-21' into maintRickard Green
* maint-21: Updated OTP version Update release notes Update version numbers erts: Fix "Prevent inconsistent node lists" fix Fix include-path regression caused by dd0a39c Restore default SIGTERM behaviour for port programs
2018-09-11Update release notesErlang/OTP
2018-09-11Update version numbersErlang/OTP
2018-09-11Update release notesErlang/OTP
2018-09-11Update version numbersErlang/OTP
2018-09-10Fix include-path regression caused by dd0a39cJohn Högberg
Include paths don't actually affect code generation in any way, but it's reasonable for a build tool like rebar3 to recompile when the include paths change. This commit restores the old behavior without the +deterministic flag.
2018-09-10Fix include-path regression caused by dd0a39cJohn Högberg
Include paths don't actually affect code generation in any way, but it's reasonable for a build tool like rebar3 to recompile when the include paths change. This commit restores the old behavior without the +deterministic flag.
2018-08-31Merge branch 'hasse/dialyzer/improve_guards/OTP-15268/ERL-680' into maintHans Bolinder
* hasse/dialyzer/improve_guards/OTP-15268/ERL-680: dialyzer: Improve handling of complex guards
2018-08-28dialyzer: Improve handling of complex guardsHans Bolinder
See also https://bugs.erlang.org/browse/ERL-680. The right associative short circuit expressions 'andalso' and 'orelse' are expanded by the Compiler (see v3_core) into 'case' expressions. If parentheses are used to enforce left associativeness, variables are introduced, and the time needed by Dialyzer increases exponentially. Rather than trying to fix Dialyzer itself, v3_core now rewrites repeated use of 'andalso' ('orelse') into right associative expressions before creating the 'case' expressions.
2018-08-22map_SUITE: Test is_map_key/2 followed by a map updateBjörn Gustavsson
2018-08-22beam_validator: Infer the type of the map argument for is_map_key/2Björn Gustavsson
Make sure that beam_validator considers a call to is_map_key/2 followed by an update of the same map without an is_map/1 test safe. (This situation will probably not be encountered when using the compiler in OTP 21, but better safe than sorry.)
2018-08-22map_SUITE: Cover map_get optimizations in beam_deadBjörn Gustavsson
2018-08-14Fix compiler crash when compiling double receivesBjörn Gustavsson
The compiler would crash when compiling a function with two receive statements. https://bugs.erlang.org/browse/ERL-703
2018-08-13Merge pull request #1919 from bjorng/bjorn/compiler/fix-is_map_key/OTP-15227Björn Gustavsson
Correct error behavior of is_map_key/2 in guards
2018-08-13Correct error behavior of is_map_key/2 in guardsBjörn Gustavsson
Consider the following functions: foo() -> bar(not_a_map). bar(M) when not is_map_key(a, M) -> ok; bar(_) -> error. What will `foo/0` return? It depends. If the module is compiled with the default compiler options, the return value will be `ok`. If the module is compiled with the `inline` option, the return value will be `error`. The correct value is `error`, because the call to `is_map_key/2` when the second argument is not a map should fail the entire guard. That is the way other failing guards BIFs are handled. For example: foo() -> bar(not_a_tuple). bar(T) when not element(1, T) -> ok; bar(_) -> error. `foo/0` always returns `error` (whether the code is inlined or not). This bug can be fixed by changing the classification of `is_map_key/2` in the `erl_internal` module. It is now classified as a type test, which is incorrect because type tests should not fail. Reclassifying it as a plain guard BIF corrects the bug. This correction also fixes the internal consistency check failure which was reported in: https://bugs.erlang.org/browse/ERL-699
2018-08-11Merge branch 'maint-21' into maintRickard Green
* maint-21: Updated OTP version Update release notes Update version numbers
2018-08-10Update release notesErlang/OTP
2018-08-10Update version numbersErlang/OTP
2018-08-10Merge branch ↵Erlang/OTP
'john/compiler/fix-deterministic-include-paths/OTP-15204/ERL-679' into maint-21 * john/compiler/fix-deterministic-include-paths/OTP-15204/ERL-679: Omit include path debug info for +deterministic builds # Conflicts: # lib/compiler/test/compile_SUITE.erl
2018-08-10Merge branch 'maint-20' into maintRickard Green
* maint-20: Updated OTP version Update release notes Update version numbers crypto: Fix crash in compute_key(ecdh, ...) on badarg Relax add_table_copy restriction Fixed #Ref ordering bug Test #Ref ordering in lists and ets Do NOT disc_load from ram_copies when master_node is set ssl: Make sure that a correct cipher suite is selected ssl: Correct handling of empty server SNI extension
2018-08-10Merge pull request #1911 from ↵Björn Gustavsson
bjorng/bjorn/compiler/binary-syntax/ERL-689/OTP-15219 Fix bug in binary matching
2018-08-09Update release notesErlang/OTP
2018-08-09Update version numbersErlang/OTP
2018-08-09Merge branch ↵Rickard Green
'john/compiler/fix-deterministic-include-paths/OTP-15204/ERL-679' into maint * john/compiler/fix-deterministic-include-paths/OTP-15204/ERL-679: Omit include path debug info for +deterministic builds
2018-08-09Omit include path debug info for +deterministic buildsJohn Högberg
Compiling the same file with different include paths resulted in different files with the `+deterministic` flag even if everything but the paths were identical. This was caused by the absolute path of each include directory being unconditionally included in a debug information chunk. This commit fixes this by only including this information in non-deterministic builds.
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