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Export of internal Abseil changes.

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--
f9f068aa8a260dc576398e47b8e4540902e41358 by Derek Mauro <dmauro@google.com>:

Fix test string with embedded NUL. Currently parses as octal.

PiperOrigin-RevId: 237088193

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d271ffdd3f450f817f6d30e98ff39d439aaf3a98 by Abseil Team <absl-team@google.com>:

Make symbolizer examine any mapping with read+exec permission regardless of 'w' bit.

PiperOrigin-RevId: 237056461

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af315f8306d36a7367a452fd0b58cafdbf20719d by Abseil Team <absl-team@google.com>:

Switch comments referencing base:: CondVar and Mutex to absl::.

PiperOrigin-RevId: 236917884

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c624d5d1c0bdb917bff5e651ba40599472f84e0e by Gennadiy Rozental <rogeeff@google.com>:

Internal change

PiperOrigin-RevId: 236898300

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3cdc82429af964846d1152f49148abc61d196a4b by Samuel Benzaquen <sbenza@google.com>:

Make the `long double` overload if AbslHashValue a template to avoid invalid
conversions with implicit operators.

This overload was never meant to capture anything other than `long double` and any current caller to it that wasn't a `long double` is potentially a bug.
In particular, any type with an implicit `bool` conversion is calling this
overload instead of trying to find a hash<> specialization, thus causing
pretty bad hash behavior.

PiperOrigin-RevId: 236877073
GitOrigin-RevId: f9f068aa8a260dc576398e47b8e4540902e41358
Change-Id: If9cc008dd814f0ca06ed881f612c06575f1f7137
This commit is contained in:
Abseil Team 2019-03-06 11:36:55 -08:00 • committed by Derek Mauro
parent 9fdf5e5b80
commit febc5ee6a9
70 changed files with 483 additions and 410 deletions
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16
absl/strings/internal/ostringstream.h
View file

@ -25,18 +25,18 @@
namespace absl {
namespace strings_internal {
// The same as std::ostringstream but appends to a user-specified string,
// The same as std::ostringstream but appends to a user-specified std::string,
// and is faster. It is ~70% faster to create, ~50% faster to write to, and
// completely free to extract the result string.
// completely free to extract the result std::string.
//
// string s;
// std::string s;
// OStringStream strm(&s);
// strm << 42 << ' ' << 3.14; // appends to `s`
//
// The stream object doesn't have to be named. Starting from C++11 operator<<
// works with rvalues of std::ostream.
//
// string s;
// std::string s;
// OStringStream(&s) << 42 << ' ' << 3.14; // appends to `s`
//
// OStringStream is faster to create than std::ostringstream but it's still
@ -45,14 +45,14 @@ namespace strings_internal {
//
// Creates unnecessary instances of OStringStream: slow.
//
// string s;
// std::string s;
// OStringStream(&s) << 42;
// OStringStream(&s) << ' ';
// OStringStream(&s) << 3.14;
//
// Creates a single instance of OStringStream and reuses it: fast.
//
// string s;
// std::string s;
// OStringStream strm(&s);
// strm << 42;
// strm << ' ';
@ -64,8 +64,8 @@ class OStringStream : private std::basic_streambuf<char>, public std::ostream {
// The argument can be null, in which case you'll need to call str(p) with a
// non-null argument before you can write to the stream.
//
// The destructor of OStringStream doesn't use the std::string. It's OK to destroy
// the std::string before the stream.
// The destructor of OStringStream doesn't use the std::string. It's OK to
// destroy the std::string before the stream.
explicit OStringStream(std::string* s) : std::ostream(this), s_(s) {}
std::string* str() { return s_; }