diff options
Diffstat (limited to 'Src/utils.c')
| -rw-r--r-- | Src/utils.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Src/utils.c b/Src/utils.c index 1a4f4c14b..0fda92709 100644 --- a/Src/utils.c +++ b/Src/utils.c @@ -2008,6 +2008,28 @@ redup(int x, int y) { int ret = y; +#ifdef HAVE_FPURGE + /* Make sure buffers are cleared when changing descriptor for a + * FILE object. No fflush() here because the only way anything + * can legitimately be left in the buffer is when an error has + * occurred, so attempting flush here would at best error again + * and at worst squirt out something unexpected. + */ + if (stdout && y == fileno(stdout)) + fpurge(stdout); + if (stderr && y == fileno(stderr)) + fpurge(stderr); + if (shout && y == fileno(shout)) + fpurge(shout); + if (xtrerr && y == fileno(xtrerr)) + fpurge(xtrerr); +#ifndef _IONBF + /* See init.c setupshin() -- stdin otherwise unbuffered */ + if (stdin && y == fileno(stdin)) + fpurge(stdin); +#endif +#endif + if(x < 0) zclose(y); else if (x != y) { |