use a common definition of NULL as 0L for C and C++

[musl] / src / stdio / popen.c

diff --git a/src/stdio/popen.c b/src/stdio/popen.c
index 5a47509..ed20f5a 100644 (file)
--- a/src/stdio/popen.c
+++ b/src/stdio/popen.c
@@ -1,4 +1,7 @@
 #include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
 #include "stdio_impl.h"
 #include "pthread_impl.h"
 #include "syscall.h"
@@ -42,7 +45,7 @@ FILE *popen(const char *cmd, const char *mode)
        if (pid) {
                __release_ptc();
                __syscall(SYS_close, p[1-op]);
-               sigprocmask(SIG_BLOCK, SIGALL_SET, &old);
+               sigprocmask(SIG_SETMASK, &old, 0);
                if (pid < 0) {
                        fclose(f);
                        return 0;