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| author | Aditya Mandaleeka <adityam@microsoft.com> | 2017-04-04 10:31:46 -0700 |
|---|---|---|
| committer | Aditya Mandaleeka <adityam@microsoft.com> | 2017-04-04 10:49:23 -0700 |
| commit | 443f2e5d907d16aba7a25d11ea418afc6ac69336 (patch) | |
| tree | 3ab7673185fcbcb0bf89593c34a34218e1c100d3 /src/pal | |
| parent | 14b09e8777615f57fc1e78c0c7775962ee5b44a0 (diff) | |
| download | coreclr-443f2e5d907d16aba7a25d11ea418afc6ac69336.tar.gz coreclr-443f2e5d907d16aba7a25d11ea418afc6ac69336.tar.bz2 coreclr-443f2e5d907d16aba7a25d11ea418afc6ac69336.zip | |
Fix handling of empty environment variables in PAL.
Diffstat (limited to 'src/pal')
| -rw-r--r-- | src/pal/src/misc/environ.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/pal/src/misc/environ.cpp b/src/pal/src/misc/environ.cpp index fed7b69f38..9fc13467c5 100644 --- a/src/pal/src/misc/environ.cpp +++ b/src/pal/src/misc/environ.cpp @@ -218,7 +218,13 @@ GetEnvironmentVariableW( } else if (size == 0) { - // handle error in GetEnvironmentVariableA + // If size is 0, it either means GetEnvironmentVariableA failed, or that + // it succeeded and the value of the variable is empty. Check GetLastError + // to determine which. If the call failed, we won't touch the buffer. + if (GetLastError() == ERROR_SUCCESS) + { + *lpBuffer = '\0'; + } } else { |