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* hb/hipe/unify_optimization/OTP-9768:
Optimize erl_types:t_unify()
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* egil/file-info-opt-utc/OTP-7687: (39 commits)
Remove time_t specific test in prim_file_SUITE
Update prim_file.beam and prim_zip.beam
Add types for posixtime_to_universaltime and the reverse
Set BASEYEAR to 1902
Set lower limit of years handled to 1601
Emulate localtime, gmtime and mktime to enable negative time_t
Document file:*_file_info/2
Fix compiler warning in unix_efile.c
Change name of bif universaltime_to_seconds/1
Change options to prim_file:*_file_info/*
Remove dead code
Catch errors from prim_file:*_file_info
Testcase for utc <-> seconds conversion
Fix negative time in seconds_to_universaltime/1
Remove OS taint from datetime conversion
Add utc <-> seconds conversions bifs
Let prim_file validate ctime in file_info
Teach #file_info spec unix epochs for file times
Add file_info_opt tests in prim_file_SUITE
unix_efile: Zero is a valid number in utime
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Conflicts:
erts/emulator/beam/erl_time_sup.c
erts/emulator/sys/win32/erl_win_sys.h
erts/emulator/sys/win32/sys_time.c
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Using a list rather than a dict() for unified variables saves quite
some time. In particular Dialyzer is a heavy user of t_unify().
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* sa/dialyzer-fixes:
Correct callback spec in application module
Refine warning about callback specs with extra ranges
Cleanup autoimport compiler directives
Fix Dialyzer's warnings in typer
Fix Dialyzer's warning for its own code
Fix bug in Dialyzer's behaviours analysis
Fix crash in Dialyzer
OTP-9776
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Variable substitution was not generalizing any unknown variables.
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* sa/dialyzer-bug-fixes:
Fix typer's crash for nonexisting files
Remove unused macro
Decrease tuple arity limit
Fix bug in dataflow
OTP-9597
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This fixes a memory related crash.
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* ta/typer-quote-atoms:
Update Dialyzer's reference results
Quote atoms if necessary in types
OTP-9560
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* dev:
erl_bif_types: Fix types for lists:key{search,find,member}/3
Fix build problems on MacOS 10.7 (Lion)
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The types for lists:key{search,find,member}/3 was computed under the
assumption that the key should be matched (=:=) to the keys in the
list, while the actual implementation uses comparison (==).
Thus erl_bif_types:types/4 would wrongly report that
lists:keyfind(42, 1, [{42.0,a}])
would always return 'false'.
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* dev:
Cleanup ETS bif's in hipe:erl_bif_types.erl (for dialyzer)
Conflicts:
erts/emulator/beam/erl_db.c
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Atoms in some occurrences were not correctly quoted when formatted to
strings, for instance by the typer program. Example:
-module(tb).
-export(['UPPERCASE-FUNCTION-NAME'/0, f1/0, f2/0, f3/0]).
-record('UPPERCASE-RECORD-NAME', {x}).
-record(r2, {'UPPERCASE-FIELD-NAME'}).
-type 'UPPERCASE-TYPE-NAME'() :: integer().
'UPPERCASE-FUNCTION-NAME'() -> ok.
f1() -> #'UPPERCASE-RECORD-NAME'{x=1}.
f2() -> #r2{'UPPERCASE-FIELD-NAME'=1}.
-spec f3() -> 'UPPERCASE-TYPE-NAME'().
f3() -> 1.
Given the program above, the output from typer --plt some.plt tb.erl
resulted in the following specs being printed:
-spec UPPERCASE-FUNCTION-NAME() -> 'ok'.
-spec f1() -> #UPPERCASE-RECORD-NAME{x::1}.
-spec f2() -> #r2{UPPERCASE-FIELD-NAME::1}.
-spec f3() -> UPPERCASE-TYPE-NAME().
This commit changes the output to become the following:
-spec 'UPPERCASE-FUNCTION-NAME'() -> 'ok'.
-spec f1() -> #'UPPERCASE-RECORD-NAME'{x::1}.
-spec f2() -> #r2{'UPPERCASE-FIELD-NAME'::1}.
-spec f3() -> 'UPPERCASE-TYPE-NAME'().
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* sa/dialyzer-dev:
Add origin information to #fun_var closures
Suppress some warnings about generation of non-returning funs
Enhance Dialyzer's inference on comparisons
Fix infinite loop in dataflow
Minor fix in dead code
Update r9c/{inets,mnesia} results in dialyzer's test suite
OTP-9529
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This patch makes Dialyzer aware of Erlang's total ordering of terms,
enabling discrepancy detection in cases where e.g. integer() < tuple()
is treated as a comparison that might also return false (when it is
certain to always return true).
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This BIF's second parameter is a list of options.
Currently the only allowed option is {minor_version, Version}
where version is either 0 (default) or 1.
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* dev:
code: Optimize purge/1 and soft_purge/1 using check_old_code/1
Add erlang:check_old_code/1
check_process_code/2: Quickly return 'false' if there is no old code
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Add erlang:check_old_code/1 to quickly check whether a module
has old code. If there is no old code, there is no need to call
erlang:check_process_code/2 for all processes, which will save
some time if there are many processes.
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This commit is a preparation for introducing location information
(filename/line number) in stacktraces in exceptions. Currently
a stack trace looks like:
[{Mod1,Function1,Arity1},
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{ModN,FunctionN,ArityN}]
Add a forth element to each tuple that can be used indication
the filename and line number of the source file:
[{Mod1,Function1,Arity1,Location1},
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{ModN,FunctionN,ArityN,LocationN}]
In this commit, the fourth element will just be an empty list,
and we will change all code that look at or manipulate stacktraces.
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concat_binary/1 was deprecated in R13B04, but already in
the R10B-2 release, the documentation recommends using
list_to_binary/1 instead.
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An incorrect spec, rpc:yield/1, has been fixed.
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While at it:
1. Moved types in their proper place
2. Did minor cleanups and
3. Took out an unused function
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Same functionality provided by string:join/2.
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* ks/process_status:
Document exiting and garbage_collecting process statuses
OTP-9102
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After the addition of unicode_binary() to the file:filename() type,
dialyzer started complaining about erroneous or incomplete specs in some
functions of the 'code' module. The culprit was hard-coded information
in erl_bif_types for functions of this module, which were not updated.
Since these functions have proper specs these days and code duplication
(pun intended) is never a good idea, their type information was removed
from erl_bif_types.
While doing this, some erroneous comments were fixed in the code module
and also made sure that the code now runs without dialyzer warnings even
when the -Wunmatched_returns option is used.
Some cleanups were applied to erl_bif_types too.
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* bjorn/beam-loader/OTP-9030: (43 commits)
c: Reduce memory footprint
erl_posix_msg: Reduce memory footprint
Introduce a few more variations of the move instructions
Combine a move + jump sequence into the move_jump instruction
Optimize and clean-up the exact equality/non-equality instructions
Optimize addition of a small integer to a variable
Introduce a special instruction for select_val with two values
Introduce a few more specialized put_list instructions
Eliminate the "put_list c n Dst" instructions
Eliminate the specific move_sd instruction
Eliminate use of GetArg1() in the badmatch and case_end instructions
Eliminate use of GetArg2() in the i_element instruction
Eliminate use of GetArg1() in the fast_element instruction
Eliminate use of GetArg1() in the jump_on_val* instructions
Eliminate use of GetArg1() in the select_val instruction
beam_emu: Eliminate sloppy use of tmp_arg1 and tmp_arg2
beam_emu: Don't inline helper functions into process_main()
beam_emu: Clean up calling of the error_handler module
Simplify a select_val instruction that selects only one value
Optimize creation of tuples
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erts_debug:instructions/0 is useful for finding which specific
instructions that are not used at all.
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The options for the ets:new/2 call has changed recently. There are
read_concurrency hints as well as compressed tables. The hipe/dialyzer
did not take this into account. This patch corrects the problem by
going through the documentation and altering the type specification.
The error fixed is with the dialyzer. When constructing an ETS table
with, e.g., {read_concurrency, true}, the dialyzer will report that the
caller of ets:new/2 will not return.
; First, we update the documentation from the ets man page.
; Second, we reorder the type specification of keypos so they appear
in the same order as in the documentation.
; Finally, we add the missing read_concurrency and compressed Tweak
options.
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The introduction of filenames being unicode binaries revealed a problem
in the type analysis of the native code compiler which resulted in an
infinite loop when compiling the 'filename' module.
In addition, the hard-coded type information for the built-in functions
of the 're' module was out-of-date, which resulted in erroneous type
information for 'filelib' functions being stored in the PLT.
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* ks/erl_bif_types-cleanup/OTP-8961:
Fix type information of 'file' and 'code' modules
Conflicts:
lib/hipe/cerl/erl_bif_types.erl
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* pan/unicode-filenames/OTP-8887: (27 commits)
Test and correct filelib and filename
Add documentation to erlang.xml and slight correction to unicode_usage.xml
Add section about Unicode file names to stdlib users guide
Correct bug in file_name_SUITE making it fail on Unix instead of Windows7
Add documentation about raw filenames and Unicode file name translation mode
Make filelib not crash on re codepoints beyond 255 in re when filename is raw
Mend on_load_embedded testcase which did not handle windows links
Correct testcase regarding windows versions supporting soft links.
Teach filelib to use re in unicode mode when filenames are not raw
Treat soft links on Windows correctly in file_name_SUITE
Adapt new soft and hard link routines on Windos to Unicode
Corrected testcases broken by unicode filenames
Update preloaded prim_file
Teach prim_file not to accept atoms and not to throw exceptions
Adapt inet_drv to Visual Studio 2008
Teach spawn_executable about Unicode
Convert filenames read on MacOSX to canonical form
Teach file to accept codepoints beyond 255.
Add testcases
Correct shell utilities to handle unicode and possibly binaries
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* lukas/hipe/decode_packet_type:
Update httppacket type to return both strings and binaries
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Also corrected type-info for bifs
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Dialyzer for a long time now has had hard-coded type information about
key functions of the 'file' and 'code' modules in 'erl_bif_types'.
Some of this information was not up-to-date according to the published
Erlang/OTP documentation, while some other part contained small errors.
Now that specs are available, this information should be moved to the
corresponding files, not be hard-coded in erl_bif_types.
This change takes out all information for the 'file' module and fixes
some small errors in type information for the 'code' module.
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* ks/file_open-mode:
Add the {encoding, _} options to file:open/2's modes
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- Fixed pretty rare crash when taking the infimum of two tuple_sets
(initial fix by Kostis Sagonas but then a better fix was provided
by Stavros Aronis and this is the one adopted).
- Fixed pretty rare crash when using parameterized types containing unbound
variables (thanks to Nicolas Trangez for reporting it).
- Fixed pretty rare infinite loop when refining the types of an SCC whose
functions all returned none() (thanks to Stavros Aronis).
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The change of taking out some hard-coded information about the file module
uncovered that the unfolding of recursive types was probably too shallow.
This has been fixed by unfolding it until a deeper limit (REC_TYPE_LIMIT).
While at erl_types.erl also did some cleanup changes and fixed an erroneous
io:format message.
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