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When defining macros the closing right parenthesis before the dot is now
mandatory.
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Unfortunately, commit 1e2ecf8c492b6d499880b8676e3c1fe0c5793103
removed all cond support except for two lines.
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"Lose" means not "not win", but "loose" means "not tight".
Change "loose" to "lose" where appropriate.
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The Erlang parser no longer duplicates the singleton type undefined in the
type of record fields without initial value.
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* hawk/escript-add-create-and-extract:
Add type info for record fields
Remove the undocumented function escript:foldl/3
Make reltool independent of the function escript:foldl/3
Add functions to create and extract escripts
Add function zip:foldl/3 to iterate over zip archives
OTP-8521 hawk/escript-add-create-and-extract
Added function zip:foldl/3 to iterate over zip archives.
Added functions to create and extract escripts. See escript:create/2 and
escript:extract/2.
The undocumented function escript:foldl/3 has been removed. The same
functionality can be achieved with the more flexible functions
escript:extract/2 and zip:foldl/3.
Record fields has been annotated with type info. Source files as been
adapted to fit within 80 chars and trailing whitespace hasd been removed.
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It is possible to obtain the same effect with the
functions escript:extract/2 and zip:fold/3. See
escript_SUITE:escript_foldl/3 for a complete
emulation of the old escript:foldl/3 function.
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Both reltool and rebar needs to parse escripts. They are currently
using an undocumented function called escript:foldl/3. It folds a
function over all files in the body of an escript. If the body
contains source code the function compiles it and the gives debug
compiled beam code to the fold fun. If the body is an archive the fun
is applied for all files in the archive.
Instead of making the undocumented function public, the new functions
escript:create/2 and escript:extract/2 has been introduced. Together
with the new zip:foldl/3 function they have the same functionality as
escript:foldl/3 in a more flexible and generic way.
escript:foldl/3 should be removed as soon as reltool and rebar has
been adopted to use the new functions. The simplest way for reltool
and rebar to do this is to just copy the code from
escript_SUITE:escript_foldl/3, which happens to provide a future
compatible implementation of an emulated escript:foldl/3 function.
I was quite hesitant when I introduced the compile_source option. It
feels that it does not belong there but the alternative felt worse.
The rationale for the compile_source option is that it is a bit
cumbersome to compile the source code, as the source in most cases is
partial. In order to do compile the source you need to know about some
internals in escript. Without compile_source I think that these
internals should be documented. Further you need to duplicate parts of
the code.
Without the compile_source option you need to first parse the source
to forms, using an undocumented function in epp with an extended
format of predefined macros which also is undocumented. Then you need
to investigate the forms to see if you need to add an export form for
main. When that is done you can run the rest of the compiler passes as
usual. It is not so much code (60 lines or so) to write, but I do not
want to urge people to write it. I actually wrote the code (see
escript_SUITE:escript_foldl/3) before I decided to introduce the
compile_source option.
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This is the public interface of prim_zip:open/3,
which has been used in earlier releases by both
erl_prim_loader and escript. The new function
can be used as a replacement for the undocumented
function escript:foldl/3 that is likely to be
removed without further notice.
The error handling of prim_zip:open/3 (and
prim_zip:foldl/3) has been improved in order to
better suite a public interface. For example it
could happen that a file or a zlib port could be
left open in some errors cases.
The documentation of the FileSpec parameter to
zip:create/3 has been updated to show that
file info can be explicitly specified. A FileSpec
may contain {Filename, binary(), #file_info{}}
elements. The function zip:create/3 was already
prepared to partly support this, but now after
a few minor fixes it is fully supported.
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* ml/documentation_apostrophe_fix:
Correct grammatical problems in conjunction with 'its'
Change all incorrect occurrences of it's to its
OTP-8523 ml/documentation_apostrophe_fix
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The documentation (*.xml) in the otp tree has a common grammatical
problem, "it's" and "its" are often interchanged. That is annoying
for some readers.
This commit consists entirely of "it's" -> "its" changes. I went
through every .xml file in the tree. If there are any remaining
bugs of this type, it's because I missed them, not because I
didn't look.
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'cond' is an experimental feature that was never completed.
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The guard test constant/1 was removed in R13B.
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The empty record (no fields) is now considered typed.
It is more consistent than before; the base case is
the logical one.
A record is typed iff all its fields are typed.
A record is tagged 'typed' iff it is typed.
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The erlang pretty printer (erl_pp) no longer quotes atoms in types.
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* ks/types:
file.hrl: Move out type declarations
kernel: Add types and specs
OTP-8494 ks/types
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Having various type declarations in the file.hrl file was once upon a time
necessary since the system could not really handle remote types. Now it can
and these declarations should not be there but appear in file.erl instead.
This means that files that need to use these types can refer to them using
a remote type reference, and not having to include file.hrl - at least not
for this reason.
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The abstract type 'fun' could not be printed. This bug has been fixed.
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The Erlang code preprocessor (epp) sent extra messages on the form
{eof,Location} to the client when parsing the file attribute. This bug,
introduced in R11B, has been fixed.
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escript:foldl/3 was not completely adapted to the changes introduced
in 6af2ac91005276add18b1c9bbf4c8fe4f8c6e040.
A partial fix has already been applied by Hakan Mattson in
4ec4a06edb5baaa0af2840943230c4a0be3a93cf.
Signed-off-by: Tuncer Ayaz <[email protected]>
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* bd/doc-fixes:
Fix minor documentation errors
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* ms/pcre-security:
Fix CVE-2008-2371 (outer level option with alternatives caused crash).
OTP-8438 The re module: A regular expression with an option change at the
start of a pattern that had top-level alternatives could cause
overwriting and/or a crash. (Thanks to Michael Santos.)
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* jn/supervisor_child_count_only:
Add count_children/1 to supervisor.erl to determine the number of
OTP-8436 Added supervisor:count_children/1 to count the number of children
being managed without the memory impact of which_children/1.
(Thanks to Jay Nelson.)
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* ks/stdlib-cleanups:
stdlib: clean up as suggested by tidier
OTP-8435: ks/stdlib-cleanups
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The patch is from:
http://vcs.pcre.org/viewvc?revision=360&view=revision
Test case:
re:compile(<<"(?i)[\xc3\xa9\xc3\xbd]|[\xc3\xa9\xc3\xbdA]">>, [unicode]).
An option change at the start of a pattern that had top-level
alternatives could cause overwriting and/or a crash.
This potential security problem was recorded as CVE-2008-2371.
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children being managed without the memory impact of which_children/1
The function which_children/1 returns a list of the child processes
currently being supervised, but it has the penalty of creating a new
list thereby consuming more memory. In low memory situations it is
often desirable to know which supervisor may have generated many
processes, but the act of discovering the culprit should not cause the
node to crash (or worse a different node if the kernel kills one
randomly). The new function count_children/1 can give an indication
of which supervisor is taxing resources the most without adding to the
burden. Rather than creating a new list, it walks the supervisor's
internal children structure using an accumulator function so that any
used memory can be incrementally collected yet the resulting count can
still be obtained.
The return result of count_children/1 is a property list of counts
containing:
- {specs, Total_Num_Child_Specs}
- {active, Num_Active_Child_Processes_Of_Supervisor_Or_Worker_Type}
- {supervisors, Num_Supervisor_Type_Children_Including_Dead_Processes}
- {workers, Num_Worker_Type_Children_Including_Dead_Processes}
This patch was made in response to mailing list discussions of the
problem diagnosing heavily taxed production systems. I cannot find
the original request, but http://www.erlang.org/cgi-bin/ezmlm-cgi/4/35060
is my original post of the patch.
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prompt strings (io:get_line/{1,2}). io_lib is also updated to
format prompts with the 't' modifier (i.e. ~ts instead of ~s).
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* ks/erl_lint:
erl_lint_SUITE: adjust failing test case
Allow recursive types and check for undefined types
OTP-8421: ks/erl_lint
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Hans Bolinder (the author/maintainer of qlc) prefers
for readability reasons to use length/1 in a guard
when it is known that the list is guaranteed to be
short, so the change suggested by tidier for line 875
of qlc_pt has not been included.
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Fix three minor typos and reorder one of a pair of lists of functions so that
the ordering is consistent.
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Errors are now reported slightly differently, so we'll
need to adjust the test case.
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Contains four kinds of changes:
* Allows recursive types and type definitions to be in any order.
* Because the checking is not performed from top to bottom, there
is a separate pass which checks for undefined module-local types.
* Behaviour callbacks which allow specs in them.
* Clean up the code as suggested by tidier.
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configuration parameter shell_prompt_func can be used for
customizing the Erlang shell prompt.
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Now, when we have only the constant definition of a macro (without
arguments), we always use it. In all other cases, we try to find the
exact matching definition. We throw an error if we don't find it.
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This feature simplifies the definition of macros by avoiding to have a
different name for each version (with different arities) of the same
macros. New rules:
- can have multiple definitions of the same macro with different arities
- cannot overload macro with the same arity
- the overloading of predefined macros (?MODULE, ?LINE, ...) is forbidden
- the directive '-undef' removes all definitions of a macro
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The dict St#epp.uses that helps to find circular macros was not correctly
updated.
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* bg/hipe-fixes:
compiler: make ignore_native_errors also handle internal hipe errors
re tests: disable native-code compilation for huge modules
Teach the compiler the no_native option
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* bg/cleanup-tests:
file_SUITE: eliminate a warning for an unused variable
kernel tests: modernize guard tests
unicode_SUITE: replace deprecated concat_binary/1 with list_to_binary/1
stdlib tests: modernize guard tests
Test suites: fix creation of Emakefiles
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Two generated modules contains too big functions for the
native-code compiler to handle (even the BEAM compiler
struggles when compiling them).
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