X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;f=src%2Fcoloredstderr.c;h=b2ef2975ef8d6e5ffae8625e925ae5caf46e3523;hb=f369605227fb876e2edb0957a7c6ace98c49f7d3;hp=32b1dd8f106f570535f614c4b410fdcc2f7ffd7e;hpb=abc3d7889f3774717baf5795ffab2efb396d2570;p=coloredstderr%2Fcoloredstderr.git

diff --git a/src/coloredstderr.c b/src/coloredstderr.c
index 32b1dd8..b2ef297 100644
--- a/src/coloredstderr.c
+++ b/src/coloredstderr.c
@@ -49,7 +49,7 @@ static size_t (*real_fwrite)(const void *, size_t, size_t, FILE *);
 # include "debug.h"
 #endif
 
-#include "macros.h"
+#include "hookmacros.h"
 #include "trackfds.h"
 
 
@@ -280,7 +280,7 @@ int fcntl(int fd, int cmd, int arg) {
 
     result = real_fcntl(fd, cmd, arg);
     /* We only care about duping fds. */
-    if (cmd == F_DUPFD) {
+    if (cmd == F_DUPFD && result != -1) {
         int saved_errno = errno;
         dup_fd(fd, result);
         errno = saved_errno;