From ff86989d9d4bb0aeabf7d17f601bb07b3e8483e4 Mon Sep 17 00:00:00 2001 From: MinarKotonoha Date: Mon, 8 Apr 2024 16:41:10 +0800 Subject: [PATCH] common-main.c: fflush stdout buffer upon exit By default, the buffer type of Windows' `stdout` is unbuffered (_IONBF), and there is no need to manually fflush `stdout`. But some programs, such as the Windows Filtering Platform driver provided by the security software, may change the buffer type of `stdout` to full buffering. This nees `fflush(stdout)` to be called manually, otherwise there will be no output to `stdout`. Signed-off-by: MinarKotonoha Signed-off-by: Johannes Schindelin --- common-main.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/common-main.c b/common-main.c index 033778b3c56a35..4683e142121ad6 100644 --- a/common-main.c +++ b/common-main.c @@ -75,6 +75,13 @@ static void check_bug_if_BUG(void) /* We wrap exit() to call common_exit() in git-compat-util.h */ int common_exit(const char *file, int line, int code) { + /* + * Windows Filtering Platform driver provided by the security software + * may change buffer type of stdout from _IONBF to _IOFBF. + * It will no output without fflush manually. + */ + fflush(stdout); + /* * For non-POSIX systems: Take the lowest 8 bits of the "code" * to e.g. turn -1 into 255. On a POSIX system this is