cpp: Constify cpp argv passed to cpp_exec

Pass argv as char *const argv[] as execvp expects it.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/bpf_parser.y b/bpf_parser.y
index 2c566a1..6f5f2b0 100644
--- a/bpf_parser.y
+++ b/bpf_parser.y
@@ -28,7 +28,7 @@
 #include "cpp.h"
 
 int compile_filter(char *file, int verbose, int bypass, int format,
-		   bool invoke_cpp, char **cpp_argv);
+		   bool invoke_cpp, char *const cpp_argv[]);
 
 static int curr_instr = 0;
 
@@ -735,7 +735,7 @@ static void pretty_printer(const struct sock_fprog *prog, int format)
 }
 
 int compile_filter(char *file, int verbose, int bypass, int format,
-		   bool invoke_cpp, char **cpp_argv)
+		   bool invoke_cpp, char *const cpp_argv[])
 {
 	int i;
 	struct sock_fprog res;