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* bjorn/fix-encoding/OTP-11041:
Encode Erlang source files with non-ascii characters in UTF-8
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To ensure that 'master' compiles when we merge 'maint' to it,
regardless of which encoding is default in 'master', all source
files with non-ascii characters *must* have the encoding specified.
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A new checkbox has been added. When it is checked, the range set by
the 'erl' flag '+pc' is used for determining when to print lists of
integers as strings. When it is unchecked, integer lists are never
printed as strings.
A minor incompatibility: settings saved by Erlang R16B01
or later cannot be read by Erlang R16B or earlier.
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* nox/enable-silent-rules/OTP-10726:
Implement ./otp_build configure --enable-silent-rules
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With silent rules, the output of make is less verbose and compilation
warnings are easier to spot. Silent rules are disabled by default and
can be disabled or enabled at will by make V=0 and make V=1.
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* dgud/debugger/unicode/OTP-10679:
debugger: View terms as unicode-strings
debugger: Fix code viewing on wxWidgets-2.9
debugger: Remove bad gs:call
debugger: Fix user evalution dependent of bindings in trace window
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* dgud/wx/fix-wx-2.9-compat/OTP-10407: (26 commits)
wx: Fix comments
wx: Workaround wx-2.9 bugs
wx: Mac fixes
wx: Fix demo and tests
wx: Allow 64 bits compilation on mac, requires wxWidgets-2.9
appmon: Move runtime part to runtime_tools app
reltool: fix wxWidgets-2.9 compability
debugger: Fix 2.9 compat
observer: Fix check for graphics contexts
Observer: Fix distribution dialog
observer: Fix font sizes
wx: Fix the demo
wx: Fix loading icons and cursors in Windows
wx: Remove unnecessary casts
wx: Fix changed getfunctions
wx: Depricate wxCursor new functions
wx: Fix int to enum
wx: Include correct m4 file in 2.9
wx: Update examples so they work with both wxWidgets 2.8 and 2.9
wx: Modify tests so they work on wxWidgets-2.9
...
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Changed the displayed variables to be printed with ~tp to show default
all lists and utf-8 binaries as unicode strings.
If the user want to see the content without unicode strings he can click
on them to see the content as integers, if not it only contains latin1
because ~p converts that.
There is currently no way to display it as lists with indentation,
so I choose to keep it as it was.
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wxWidgets contains more code format options and if they
are not set it looks really bad.
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A present non working gs call was left in the code
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Bindings in erl_eval is an orddict and must be sorted otherwise
they are not found, depending on creation order
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wxTextCtrl:setFocus selects all input.
wxListBox:insertItems() Asserts for a zero list, sigh..
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OTP-10106
OTP-10107
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Reported by Ricardo Catalinas Jiménez
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* dgud/wx/behaviour-spec:
[wx] Add handle_cast to avoid behaviour warning
[wx] Avoid missing wx_object behaviour warning
[wx] Remove warnings Add an additional cast when casting buffer offsets, to remove warnings "cast to pointer from integer of different size"
[wx] Add callback specs to wx_object
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* rj/fix-debugger-msgs:
Fix "OK" spelling in debugger messages and variables
Fix debugger message with wx
OTP-9699
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Simple code refactor in the debugger: renames all the occurrences of
"Ok" to "OK" in the code, variable names and strings. This improves the
consistency of the code and follows the GTK UI where "OK" is always
used.
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Add missing spaces when using wx UI. The gs UI didn't need them.
Change the exclamation of the message by a dot, more formal style for a
UI message.
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Currently, the external fun syntax "fun M:F/A" only supports
literals. That is, "fun lists:reverse/1" is allowed but not
"fun M:F/A".
In many real-life situations, some or all of M, F, A are
not known until run-time, and one is forced to either use
the undocumented erlang:make_fun/3 BIF or to use a
"tuple fun" (which is deprecated).
EEP-23 suggests that the parser (erl_parse) should immediately
transform "fun M:F/A" to "erlang:make_fun(M, F, A)". We have
not followed that approach in this implementation, because we
want the abstract code to mirror the source code as closely
as possible, and we also consider erlang:make_fun/3 to
be an implementation detail that we might want to remove in
the future.
Instead, we will change the abstract format for "fun M:F/A" (in a way
that is not backwards compatible), and while we are at it, we will
move the translation from "fun M:F/A" to "erlang:make_fun(M, F, A)"
from sys_pre_expand down to the v3_core pass. We will also update
the debugger and xref to use the new format.
We did consider making the abstract format backward compatible if
no variables were used in the fun, but decided against it. Keeping
it backward compatible would mean that there would be different
abstract formats for the no-variable and variable case, and tools
would have to handle both formats, probably forever.
Reference: http://www.erlang.org/eeps/eep-0023.html
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By default, the debugger use to save all calls on its simulated
stack. That could facilitate finding errors, but it could also
mean that the Debugger could become very slow while executing
tail-recursive code.
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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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Since the run-time system cannot load those BEAM files, it was
not possible to debug them anyway.
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The stacktrace in debugger-generated exceptions should be
as similar to stacktraces in BEAM-generated exceptions as
possible.
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The 'no_tail' option was broken and would work almost as the
'all' option, because it would use #ieval.top (formerly
known as #ieval.last_call) as the basis for its decision
to push or not.
Fix it by including a boolean in each call/apply instruction
indicating whether the call is tail-recursive and pass
that boolean to the dbg_istk:push() function.
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An exception from eval_bits:expr_grp/5 (for constructing binaries)
was not caught and handled by exception/4; thus exit_info and
and stacktrace for the process was not set.
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'eval_bits' is a common utility module used for evaluting binary
construction and matching. The functions that do matching
(match_bits/{6,7} and bin_gen/6) are supposed to treat the bindings as
an abstract data type, but they assume that the bindings have the same
representation as in the erl_eval module. That may cause binary
matching to fail in the debugger, because the debugger represents the
bindings as an unordered list of two-tuples, while the erl_eval
modules uses an ordered list of two-tuple (an ordset).
One way to fix the problem would be to let the debugger to use ordered
lists to represent the bindings. Unfortunately, that would also change
how the bindings are presented in the user interface. Currently, the
variable have most been recently assigned is shown first, which is
convenient.
Fix the matching problem by mending the leaky abstraction in
eval_bits. The matching functions needs to be passed two additional
operations: one for looking up a variable in the bindings and one for
adding a binding. Those operations could be passed as two more funs
(in addition to the evaluation and match fun already passed), but the
functions already have too many arguments. Therefore, change the
meaning of the match fun, so that the first argument is the operation
to perform ('match', 'binding', or 'add_binding') and second argument
is a tuple with arguments for the operation.
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When an exception occurs, the entire stack will be converted to
the external term format and kept in the exit_info variable in
the process dictionary. But the exit_info variable will only be
needed if the exception causes the process to terminate (not if
it is caught).
Delay the conversion of the stack to external format. That can
save significant amounts of time (e.g. in bs_construct:mem_leak/1).
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In a list comprehension, a failing call to a guard BIF means
false (rather than an exception).
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Expressions in guards such as:
f() when [1,2,3] ->
ok.
would cause the debugger to crash when attempting to interpret the
module containing the expressions. Other kind of constants such as:
f() when 42 ->
ok.
were converted to an invalid internal format ({integer,Line,42}
instead of {value,Line,42}), but that happened to work because
because anything not equal to 'true' (even a crash) was interpreted
as 'false'.
Make sure to handle all possible expressions and convert them
directly to {value,Line,false}. Remove the special handling of
the atom 'true' in and_guard/1 since it is no longer needed.
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erlang:raise/3 was evaluated in the real process, which produced
a correct stacktrace, but did not set emulated stacktrace for the
process. Thus, a subsequent call to erlang:get_stacktrace/0 would
retrieve the previous stacktrace for the process.
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When an exception was generated from interpreted code, the stacktrace
would not look exactly like BEAM's stacktraces. There would generally
be fewer entries (never more than three), and the top entry would
always have MFAs with the actual arguments (rather than the arity).
There are two good reasons for making the stacktraces as similar
as possible:
* Code that examines a stacktrace can behave differently in the
interpreted and BEAM code if the stacktraces are different.
* It is easier to test the debugger if test suites for other
applications (such as the emulator) can be run with the debugger
with as few modifications as possible.
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Currently, dbg_istk:exception_stacktrace/2 does not do a very good job
imitating BEAM's stacktrace. The reason is that it need to be
relatively fast since a simulated stacktrace is constructed not only
when an exception oocurs, but also before every call to
non-interpreted code.
To prepare for a future more thorough (and slower) stacktrace
construction, refactor the building of the stacktrace so that
it only is done when erlang:get_stacktrace/0 is called.
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Problems with the current stack implementation:
* The GUI assumes that the stack frame pushed on the stack
is level 2. If the 'no_tail' option is set for the process,
there may not be an entry for level 2.
* In each stack entry, the line number is the line number of
the caller, not the line number for the function in the 'mfa'
field as might be expected. That complicates generation of
a stacktrace with line number information.
Change the implementation as follows:
* Keep the information for the current function (its MFA and
current line number) in the #ieval{} record. Don't push it
onto the stack. Only push the information when another function
is called. That will ensure that the MFA and the line number
is found in the same stack entry. That also has the advantage
that if the 'no_tail' option is set, the stack not need to
be modified for tail-recursive calls.
* Make sure that there always is an entry for level two.
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There is no need to set #ieval.top to false in every
iteration of eval_list/1.
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The 'last_call' is badly named. What is means is that the
next call will leave intepreted code.
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