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-rw-r--r--sysdeps/generic/pty.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sysdeps/generic/pty.c b/sysdeps/generic/pty.c
index 8df8aba4ba..660602b25a 100644
--- a/sysdeps/generic/pty.c
+++ b/sysdeps/generic/pty.c
@@ -59,9 +59,12 @@ openpty(amaster, aslave, name, termp, winp)
static char line[] = "/dev/ptyXX";
register const char *cp1, *cp2;
register int master, slave, ttygid;
+ size_t buflen = sysconf (_SC_GETGR_R_SIZE_MAX);
+ char buffer[buflen];
+ struct group grbuffer;
struct group *gr;
- if ((gr = getgrnam("tty")) != NULL)
+ if (getgrnam_r("tty", &grbuffer, buffer, buflen, &gr) >= 0)
ttygid = gr->gr_gid;
else
ttygid = -1;