[PATCH] Cygwin: pipe: Avoid false EOF while reading output of C# programs.
Takashi Yano
takashi.yano@nifty.ne.jp
Sun Nov 7 03:47:18 GMT 2021
- If output of C# program is redirected to pipe, pipe reader falsely
detects EOF. This happens after overhaul of pipe implementation.
This patch fixes the issue.
Addresses:
https://cygwin.com/pipermail/cygwin/2021-November/249777.html
---
winsup/cygwin/fhandler_pipe.cc | 3 ++-
winsup/cygwin/release/3.3.2 | 4 ++++
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/winsup/cygwin/fhandler_pipe.cc b/winsup/cygwin/fhandler_pipe.cc
index 43771e8f7..bc06d157c 100644
--- a/winsup/cygwin/fhandler_pipe.cc
+++ b/winsup/cygwin/fhandler_pipe.cc
@@ -393,7 +393,8 @@ fhandler_pipe::raw_read (void *ptr, size_t& len)
}
}
- if (nbytes_now == 0 || status == STATUS_BUFFER_OVERFLOW)
+ if ((nbytes_now == 0 && !NT_SUCCESS (status))
+ || status == STATUS_BUFFER_OVERFLOW)
break;
}
ReleaseMutex (read_mtx);
diff --git a/winsup/cygwin/release/3.3.2 b/winsup/cygwin/release/3.3.2
index 263c3efe6..2e48e39be 100644
--- a/winsup/cygwin/release/3.3.2
+++ b/winsup/cygwin/release/3.3.2
@@ -8,3 +8,7 @@ Bug Fixes
Addresses: https://sourceware.org/pipermail/newlib/2021/018626.html
- Fix a permission problem when writing ACLs on Samba.
+
+- Fix the issue that pipe reader falsely detects EOF if the output of
+ the C# program is redirected to the pipe.
+ Addresses: https://cygwin.com/pipermail/cygwin/2021-November/249777.html
--
2.33.0
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