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common-main.c: fflush stdout buffer upon exit

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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 <chengzhuo5@qq.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
MinarKotonoha 2024-04-08 16:41:10 +08:00 committed by Johannes Schindelin
parent b4f0424fce
commit 503d48a907
1 changed files with 7 additions and 0 deletions
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7
common-exit.c
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@ -11,6 +11,13 @@ 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