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We can safely tell when a test_arity or is_record instruction is
superflous by keeping track of whether the size is exactly known
or not.
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See also https://bugs.erlang.org/browse/ERL-551.
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The reduction cost of sending messages is now constant and will no
longer scale according to the length of the receiving process'
message queue.
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This suite tests compatibility with different combinations of OpenSSH and OpenSSL. The peer SSH is running in a docker container.
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beam_validator did not verify that the Y registers were initialized
before executing the following instructions that could cause a GC:
bs_append/8
bs_init2/6
bs_init_bits/6
gc_bif1/5
gc_bif2/6
gc_bif3/7
test_heap/2
That means that, for example, an incorrect optimization that replaced
an 'allocate_zero' instruction with an 'allocate' instruction when it
was not safe, would not be rejected by beam_validtor, but would
instead cause a crash or other undefined behavior at runtime.
Also fix a minor bug in beam_type exposed by the stronger checking.
When compiling from .S files, beam_type did not handle the
init/1 instruction and could produce unsafe code.
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Reduce register shuffling in receive clauses
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Stream ciphers are not valid fro DTLS
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Client will retransmit until server becomes responsive
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The Design Principles states that an application can have Erlang
source files one level below the "src" directory, and now
filelib:find_source() by default searches one level below "src".
The same applies to "esrc". That directory is only mentioned in
filename(3).
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into utility functions.
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The type optimizations for is_record and test_arity checked whether
the arity was equal to the size stored in the type information,
which is incorrect since said size is the *minimum* size of the
tuple (as determined by previous instructions) and not its exact
size.
A future patch to the 'master' branch will restore these
optimizations in a safe manner.
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Conflicts:
lib/ssl/src/tls_connection.erl
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* ingela/ssl/error-handling-race/ERL-539/OTP-14852:
ssl: Prevent error handling race condition
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ERL-539
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Before:
1> binary_to_integer(<<":">>, 16).
3
After:
1> binary_to_integer(<<":">>, 16).
** exception error: bad argument
in function binary_to_integer/2
called as binary_to_integer(<<":">>,16)
Prior to this change, both list_to_integer/2 and binary_to_integer/2
would convert strings with values between ASCII '9' up to '0'+base for
base > 10. For example, when converting in base 16, you could pass ':',
';', '<', '=', '>', and '?' without getting an exception. This was due
to a missing check in c2int_is_invalid_char().
This change adds the missing check and a regression test for passing
':'. It also simplifies the code and tightens up an out-of-bounds check
to make it off-by-one rather than off-by-two.
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Fix GC bug for HiPE primop bs_put_utf8
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in order to detect incompatible changes in primop interface
(which we just did for bs_put_utf8) and refuse hipe loading.
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by preventing it from doing GC, which generated code relies on.
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This bug was introduced by commit 3b964e8dbaa0cd73ca7a983b3ce948e0dbd2c35c
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This is *ONLY* relevant for drivers/NIFs, so it's probably counter-
productive to document it elsewhere.
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Previously we accepted trailing NULs, which was backwards compatible
as such usage never resulted in misbehavior in the first place. The
downside is that it prevented erts_native_filename_need from
returning an accurate number of *actual characters*, needlessly
complicating encoding-agnostic code like erts_osenv.
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The standard search order does not include the directory that the
loaded DLL resides in, requiring dirty $PATH hacks to get things
working, which is not an option now that os:putenv/2 is divorced
from the OS environment.
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putenv(3) and friends aren't thread-safe regardless of how you slice
it; a global lock around all environment operations (like before)
keeps things safe as far as our own operations go, but we have
absolutely no control over what libc or a library dragged in by a
driver/NIF does -- they're free to call getenv(3) or putenv(3)
without honoring our lock.
This commit solves this by setting up an "emulated" environment which
can't be touched without going through our interfaces. Third-party
libraries can still shoot themselves in the foot but benign uses of
os:putenv/2 will no longer risk crashing the emulator.
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Fix howto typos
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* maint:
ssh: ssh_dbg updates
ssh: Better reports in some test case failures
ssh: Tests - timeout catches external ssh that does not disconnect
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* hans/ssh/cuddle_ssh_test:
ssh: Better reports in some test case failures
ssh: Tests - timeout catches external ssh that does not disconnect
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* hans/ssh/cuddle_ssh_dbg:
ssh: ssh_dbg updates
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* maint:
tools: Correct a counting bug in Cover
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* hasse/cover/fix_counting/OTP-14817/PR-1641:
tools: Correct a counting bug in Cover
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into maint
* origin/ingela/inets/remove-legacy-test-suite:
inets: Remove old legacy SUITE
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See also PR #1641, https://github.com/erlang/otp/pull/1641.
The bug was introduced in commit ab435488a (Erlang/OTP 18).
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* hasse/stdlib/gen_server_bench:
stdlib: Optimize gen a little
stdlib: Introduce gen_server benchmark
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Fix link to the contribution guide in README.md
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