t/test-lib.sh: Protect ourselves from common misconfiguration

diff --git a/exec_cmd.h b/exec_cmd.h
index 5150ee29f7a2bef5cd446dbb18de36c4ffa7cce8..989621ff4ecea463c340cb05eb035be0f7cb94a5 100644 (file)
--- a/exec_cmd.h
+++ b/exec_cmd.h
@@ -3,8 +3,8 @@
 
 extern void git_set_exec_path(const char *exec_path);
 extern const char* git_exec_path(void);
-extern int execv_git_cmd(char **argv); /* NULL terminated */
-extern int execl_git_cmd(char *cmd, ...);
+extern int execv_git_cmd(const char **argv); /* NULL terminated */
+extern int execl_git_cmd(const char *cmd, ...);
 
 
 #endif /* __GIT_EXEC_CMD_H_ */