Custom Highlighting. Original patch by Mark Roseman.

Since PGO building doesn't care about test failures, silence them when
running the test suite for performance reasons. Initial patch by
Alecsandru Patrascu of Intel.

Patch by Johannes Niediek.

Patch by Johannes Niediek.

1. Non-ASCII bytes were accepted after shift sequence.
2. A low surrogate could be emitted in case of error in high surrogate.
3. In some circumstances the '\xfd' character was produced instead of the
replacement character '\ufffd' (due to a bug in _PyUnicodeWriter).

1. Non-ASCII bytes were accepted after shift sequence.
2. A low surrogate could be emitted in case of error in high surrogate.

hash only once.

longer formatted twice.

longer formatted twice.

getentropy() is blocking, whereas os.urandom() should not block. getentropy()
is supported since Solaris 11.3.

function instead of the getentropy() function. The getentropy() function is
blocking to generate very good quality entropy, os.urandom() doesn't need such
high-quality entropy.

sys.gettrace() when the test is executed, not when the module is loaded.

sys.settrace() may be after after the test is loaded.

sys.gettrace() when the test is executed, not when the module is loaded.

sys.settrace() may be after after the test is loaded.

Restore also errno value before calling PyErr_SetFromErrno().

imported at startup) now uses the backslashreplace error handler.

imported at startup) now uses the backslashreplace error handler.

now accept the self and the dict keyword arguments.

now accept the self and the dict keyword arguments.

argument.

argument.

unpickler.  Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8
opcodes no longer silently ignored on 32-bit platforms in C implementation.

unpickler.  Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8
opcodes no longer silently ignored on 32-bit platforms in C implementation.