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Export of internal Abseil changes

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5315e7b98905922e779798f3168d98343438c134 by Derek Mauro <dmauro@google.com>:

Fix absl::string_view::copy to throw std::out_of_range when pos > size().

Fixes https://github.com/abseil/abseil-cpp/issues/362

PiperOrigin-RevId: 261907364
GitOrigin-RevId: 5315e7b98905922e779798f3168d98343438c134
Change-Id: Ia8ab971c54f287411f6ea4b99f9c666c989c33fd
This commit is contained in:
Abseil Team 2019-08-06 07:13:35 -07:00 • committed by CJ Johnson
parent c5c4db4f51
commit 67222ffc4c
3 changed files with 17 additions and 13 deletions
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13
absl/strings/string_view.h
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@ -50,6 +50,7 @@ using std::string_view;
#include "absl/base/internal/throw_delegate.h"
#include "absl/base/macros.h"
#include "absl/base/optimization.h"
#include "absl/base/port.h"
namespace absl {
@ -334,7 +335,17 @@ class string_view {
//
// Copies the contents of the `string_view` at offset `pos` and length `n`
// into `buf`.
size_type copy(char* buf, size_type n, size_type pos = 0) const;
size_type copy(char* buf, size_type n, size_type pos = 0) const {
if (ABSL_PREDICT_FALSE(pos > length_)) {
base_internal::ThrowStdOutOfRange("absl::string_view::copy");
}
size_type rlen = (std::min)(length_ - pos, n);
if (rlen > 0) {
const char* start = ptr_ + pos;
std::copy(start, start + rlen, buf);
}
return rlen;
}
// string_view::substr()
//