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The clause does not server any useful purpose, since it does the
same as the default clause at the end.
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The is_simple/1 function does not need to handle #c_binary{},
since it will never be called with a #c_binary{} argument.
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The state record #core{} has a "es" field that can be used for
causing a compilation error. Since incorrect programs have been
rejected much earlier by erl_lint, no errors were actually stored
in the "es" fields. Therefore, get rid of the "es" field and
the support for generating a compilation error in the v3_core
module.
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put_literal/2 was an experimental instruction added in R11 to
support literals, but before the R12 release support for literals
was implemented for all instruction, making the put_literal/2
instruction redundant. Although the beam_disasm module supports
dissambley of instructions in older releases, there is
no reason to have it support experimental instructions.
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bs_bits_to_bytes2/2 was an experimental instruction added in R11,
but was removed in R12. Although the beam_disasm and beam_validator
modules do support instructions in older releases, there is
no reason to have them support experimental instructions.
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The last compiler to generate code that uses the bs_bits_to_bytes/3
instruction was the R11 compiler. Since we don't support loading
R11 *.beam files in R14, removing the remaining support for the
instruction.
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Extend float_SUITE to cover the handling of all BIFs in
the 'math' module. This change will increase test coverage
of erl_bifs and erl_type.
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live_regs/1 folds over a list of tuples, so a clause matching
an element being an empty list can never match.
If the list for some unfathomable reason would contain an empty
list, there will be an internal compiler error and no *.beam file
will be created. Thus this change is safe.
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Add a test case (derived from dets_v9:scan_skip/8), to cover the
clause in initialized_regs/2 that handles bs_context_to_binary.
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When scanning a reversed instruction sequence for a function,
it is impossible to reach the end of the list, because each function
must have a fun_info/4 instruction followed by a label/1 instruction
at the beginning, and there is a clause that will handle those
instructions.
If for some unfathomable reason the end of the list would be
reached, with this change there will be an internal compiler error
and no *.beam file will be created. Thus this change is safe.
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Since the introduction of literals in R12B, empty tuples
are literals. Thus the put_tuple/2 instruction is always
followed by at least one put/1 instruction. Therefore
the alloc_may_pass/1 function in beam_block no longer needs
a clause for for "put_tuple", because the clause for "put"
will always be reached first (since the instruction stream
is scanned in reverse execution order).
Note that if the compiler would generate a "put_tuple 0 Dst"
instruction for some unfathomable reason, we should still be
because the run-time system will now refuse to load a module
containing such an instruction.
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Since R12B, empty tuples are literals. Thus the compiler will no
longer generate the instruction:
put_tuple 0 Destination
for creating an empty tuple. It is now time to stop supporting
that instruction in the run-time system.
While we are at it, correct a typo.
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On Solaris only, the 'time' option would include the process
size for the Erlang virtual machine in its output. Since few
compiler developers use Solaris nowadays, remove the code.
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Compiling from *.core files is not a supported feature, and writing
test cases to improve the coverage of core_scan will not help
us to find more bugs in the compiler.
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* pan/otp_8217_binary:
Add documentation for binary module
Add more tests and make some go easier on small systems
Correct Boyer More and trapping for longest_common_suffix
Add longer timetrap to testcases and add binary to app file
Add guard BIFs binary_part/2,3
Add binary:{encode,decode}_unsigned({1,2}
Add referenced_byte_size/1
Add binary:list_to_bin/1 and binary:copy/1,2
Add bin_to_list/{1,2,3}
Add binary:longest_common_prefix/longest_common_suffix
Add binary:part to erl_bif_binary.c
Move binary module bif's to erl_bif_binary.c
Count reductions for process even when not trapping
Add random compare testcase
Teach BIF's binary:match/matches interrupting/restarting
Teach binary.c the semantics to take longest instead of shortest match
Initial commit of the binary EEP
OTP-8217 Implement EEP31
The module binary from EEP31 (and EEP9) is implemented.
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* dp/shell-line-editing:
Readline-style line edit history
OTP-8635 dp/shell-line-editing
The shell's line editing has been improved to more resemble the behaviour
of readline and other shells. (Thanks to Dave Peticolas)
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future.
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Correct behaviour of copy/2 witn 0 copies.
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Even more tests added to cover more error cases, some tests
made easier on systems with small memories and timeouts made longer
due to timetraps on solaris daily builds.
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Add testcases and clean up to get better code coverage.
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Add the gc_bif's to the VM.
Add infrastructure for gc_bif's (guard bifs that can gc) with two and.
three arguments in VM (loader and VM).
Add compiler support for gc_bif with three arguments.
Add compiler (and interpreter) support for new guard BIFs.
Add testcases for new guard BIFs in compiler and emulator.
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Add testcases for encode/decode_unsigned/1,2.
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Add testcases for referenced_byte_size/1.
Add failure tests for referenced_byte_size.
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Add testcases for binary:list_to_bin/1 and binary:copy/1,2.
Add reference implementation of list_to_bin/1.
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Add testcases for bin_to_list.
Teach binref.erl bin_to_list.
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Add allcoator parameter to erts_get_aligned_binary_bytes_extra.
Add testcases for the functions above.
Add reference implementation for the functions above.
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Change name of the 'scope' option for binary:match/matches.
Add split and replace to binary.erl.
Cleanup comments etc in binary.erl and atom.names
Add testcases for part, split, replace and scopes.
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Set loop factors to 10.
Teach erts_debug:set_internal_state to limit loop factor for binary.
Add random tests for matches and match with multiple searchstrings.
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Fix heap-hole when trapping in binary.c
Fix boyer more segfaulting when searchstring is longer than haystack
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Add Boyer More implementation of binary:matches.
Cleanup and removed unused code.
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Add testcase embryos and reference implementation.
Change name of compile function according to EEP31.
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Reported by Uwe Dauernheim.
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* mp/fix-erts_poll_info_kp-livelock:
fix livelock in erts_poll_info_kp()
OTP-8632 mp/fix-erts_poll_info_kp-livelock
When kernel poll has been enabled, a livelock could in rare circumstances
occur. Problem reported by Chetan Ahuja, fix by Mikael Pettersson.
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erts_poll_info_kp() [defined in erts/emulator/sys/common/erl_poll.c
via some name-mangling trickery] contains a code path that can end
up in an infinite loop, causing a livelock. There is a block of code
inside #if ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE that is supposed to
iterate over a linked list of ErtsPollSetUpdateRequestsBlocks and
update two variables based on the sizes of these blocks. The bug is
that the loop forgets to advance the list pointer to the next element,
so if the loop is entered at all (the initial list pointer is non-NULL),
the thread falls into an infinite loop.
This patch, against R13B03 but applies fine to today's git, fixes the
bug by adding a statement to advance the list pointer in the loop.
All other loops over this list appear to be correct.
Thanks to Chetan Ahuja for the original report of a livelock problem
in erts_poll_info_kp().
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* bg/compiler-attributes:
Remove opaque declarations from the attributes
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The bug was introduced in d60f055697cfe8e7f94be4d291d49bb00a66bc52.
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The documentation of lists:keysort/2 states that the sort is stable.
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