1 files changed, 7 insertions, 1 deletions
diff --git a/posix.c b/posix.c
index 422d61d..77cfaf4 100644
--- a/posix.c
+++ b/posix.c
@@ -47,11 +47,17 @@
 #include <pwd.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+/* added by Denys Duchier: for kill */
+#include <signal.h>
 
 #ifndef STDC_HEADERS
 	char *ttyname P((int fd));
 	FILE *popen P((const char* command, const char* type));
 	int pclose P((FILE* stream));
+#else /* added by Denys Duchier */
+# ifdef SVR4
+#  include <unistd.h>
+# endif
 #endif
 
      /* Only the superuser can successfully execute this call */
@@ -158,7 +164,7 @@ SCM scm_getgroups()
 					 scm_s_getgroups);
     int val = getgroups(ngroups, groups);
     if (val < 0) {
-      must_free(groups);
+      must_free((char *)groups);
       ALLOW_INTS;
       return BOOL_F;
     }