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| author | Thomas Schwinge <tschwinge@gnu.org> | 2008-12-17 23:38:33 +0100 |
|---|---|---|
| committer | Thomas Schwinge <tschwinge@gnu.org> | 2008-12-17 23:46:46 +0100 |
| commit | 6abe3c1e8a9e3a58d50d098a6211632d02d9a250 (patch) | |
| tree | 0da9835723634c4f24c75fb885188c118b7d4e2c /hurd/debugging/translator | |
| parent | e81e25b0f95a98da1880fc0dcaebeffa162b3e75 (diff) | |
hurd/debugging/translator/capturing_stdout_and_stderr: Note about line-buffering.
Diffstat (limited to 'hurd/debugging/translator')
| -rw-r--r-- | hurd/debugging/translator/capturing_stdout_and_stderr.mdwn | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hurd/debugging/translator/capturing_stdout_and_stderr.mdwn b/hurd/debugging/translator/capturing_stdout_and_stderr.mdwn index 8430287a..e95d6e12 100644 --- a/hurd/debugging/translator/capturing_stdout_and_stderr.mdwn +++ b/hurd/debugging/translator/capturing_stdout_and_stderr.mdwn @@ -24,3 +24,10 @@ Sometimes it may already be helpful to capture a translator's `stdout` and (Trying to run [[GDB]] in this case was of no help -- due to a bug in GDB (supposedly) it wouldn't catch the fault.) + +Be made aware that both `stdout` and `stderr` will be block bufferend and no +longer line buffered when doing such a redirection, so you'll have to arrange +for appropriate `fflush`es on these, or force them to be line buffered again +using the appropriate glibc magic (`setvbuf`). Otherwise you'll see text in +the output files only if either glibc herself decides to flush (after some KiB +of text) the after translator exits. |