Try again if write(2) reports an recoverable error.
This should fix mysteriously crashing boost regression tests when stderr is
managed by bjam (PR7043).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103085 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index 0b05c54..f8ac65d 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -21,6 +21,7 @@
#include "llvm/Support/ErrorHandling.h"
#include "llvm/ADT/STLExtras.h"
#include <cctype>
+#include <cerrno>
#include <sys/stat.h>
#include <sys/types.h>
@@ -420,7 +421,11 @@
void raw_fd_ostream::write_impl(const char *Ptr, size_t Size) {
assert(FD >= 0 && "File already closed.");
pos += Size;
- if (::write(FD, Ptr, Size) != (ssize_t) Size)
+ ssize_t ret;
+ do {
+ ret = ::write(FD, Ptr, Size);
+ } while (ret < 0 && (errno == EAGAIN || errno == EINTR));
+ if (ret != (ssize_t) Size)
error_detected();
}