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system/FileDescriptor: fix Duplicate result

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dup2 returns new_fd on success, not 0
This commit is contained in:
arcnmx 2020-10-19 12:15:34 -07:00
parent 8348a1ec8f
commit ad585e179f
1 changed files with 1 additions and 1 deletions
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2
src/io/FileDescriptor.hxx
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@ -178,7 +178,7 @@ public:
* Duplicate the file descriptor onto the given file descriptor. * Duplicate the file descriptor onto the given file descriptor.
*/ */
bool Duplicate(FileDescriptor new_fd) const noexcept { bool Duplicate(FileDescriptor new_fd) const noexcept {
return ::dup2(Get(), new_fd.Get()) == 0; return ::dup2(Get(), new_fd.Get()) != -1;
} }
/** /**