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| author | David Majnemer <david.majnemer@gmail.com> | 2013-10-07 21:57:07 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2013-10-07 21:57:07 +0000 |
| commit | 34e1444ebde9516422f08d8ddb4358b11b7e50c1 (patch) | |
| tree | 979e432f6b66f32ee31a2947acad1040b61dad6f /lib/Support | |
| parent | d56cba0b4bc3854e7ed825adbde3ffa8ee9937cb (diff) | |
| download | external_llvm-34e1444ebde9516422f08d8ddb4358b11b7e50c1.zip external_llvm-34e1444ebde9516422f08d8ddb4358b11b7e50c1.tar.gz external_llvm-34e1444ebde9516422f08d8ddb4358b11b7e50c1.tar.bz2 | |
Windows: Avoiding resizing, use uninitialized data() instead
This is ever-so faster but more importantly matches what we have elsewhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192137 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support')
| -rw-r--r-- | lib/Support/Windows/Process.inc | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/Support/Windows/Process.inc b/lib/Support/Windows/Process.inc index 50a204f..f9a3db9 100644 --- a/lib/Support/Windows/Process.inc +++ b/lib/Support/Windows/Process.inc @@ -161,8 +161,9 @@ Optional<std::string> Process::GetEnv(StringRef Name) { SmallVector<wchar_t, MAX_PATH> Buf; size_t Size = MAX_PATH; do { - Buf.resize(Size); - Size = GetEnvironmentVariableW(&NameUTF16[0], &Buf[0], Buf.capacity()); + Buf.reserve(Size); + Size = + GetEnvironmentVariableW(NameUTF16.data(), Buf.data(), Buf.capacity()); if (Size == 0) return None; @@ -172,9 +173,9 @@ Optional<std::string> Process::GetEnv(StringRef Name) { // Convert the result from UTF-16 to UTF-8. SmallVector<char, MAX_PATH> Res; - if (error_code ec = windows::UTF16ToUTF8(&Buf[0], Size, Res)) + if (error_code ec = windows::UTF16ToUTF8(Buf.data(), Size, Res)) return None; - return std::string(&Res[0]); + return std::string(Res.data()); } error_code |