Fix a SIGSEGV in test-ptrace.c

./test-ptrace -v resulted in a SIGSEGV.

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/test-ptrace.c b/tests/test-ptrace.c
index c9f8f2e9..8f2e1cb1 100644
--- a/tests/test-ptrace.c
+++ b/tests/test-ptrace.c
@@ -204,6 +204,8 @@ main (int argc, char **argv)
 	  ++optind, print_names = 0;
 	else
 	  fprintf(stderr, "unrecognized option: %s\n", argv[optind++]);
+        if (optind >= argc)
+          break;
       }
 
   target_pid = fork ();
@@ -221,6 +223,11 @@ main (int argc, char **argv)
 #else
 #error Trace me
 #endif
+
+      if (optind == argc) {
+        fprintf(stderr, "Need to specify a command line for the child\n");
+        exit (-1);
+      }
       execve (argv[optind], argv + optind, environ);
       _exit (-1);
     }