crond: do not assume setenv() does not leak

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/scripts/test_setenv_leak.c b/scripts/test_setenv_leak.c
new file mode 100644
index 000000000..e51722ca7
--- /dev/null
+++ b/scripts/test_setenv_leak.c
@@ -0,0 +1,18 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+int main(int argc, char **argv)
+{
+        char buf[256];
+
+        int i = argv[1] ? atoi(argv[1]) : 999999;
+        while (--i > 0) {
+                sprintf(buf, "%d", i);
+                setenv("VAR", buf, 1);
+        }
+        printf("Check size of [heap] mapping:\n");
+        freopen("/proc/self/maps", "r", stdin);
+        while (fgets(buf, sizeof(buf), stdin))
+                fputs(buf, stdout);
+        return 0;
+}