NULL check before dereferencing

[fw/openocd] / src / server / gdb_server.c

diff --git a/src/server/gdb_server.c b/src/server/gdb_server.c
index 660e05ef949c3be64c0e38955bfd49ffa921ca22..c578780c8d374cc865c3d2de90a7d2dc95894682 100644 (file)
--- a/src/server/gdb_server.c
+++ b/src/server/gdb_server.c
@@ -104,8 +104,8 @@ static int gdb_breakpoint_override;
 static enum breakpoint_type gdb_breakpoint_override_type;
 
 static int gdb_error(struct connection *connection, int retval);
-static const char *gdb_port;
-static const char *gdb_port_next;
+static char *gdb_port;
+static char *gdb_port_next;
 
 static void gdb_log_callback(void *priv, const char *file, unsigned line,
                const char *function, const char *string);
@@ -1988,7 +1988,8 @@ static int get_reg_features_list(struct target *target, char **feature_list[], i
                if (reg_list[i]->exist == false)
                        continue;
 
-               if ((reg_list[i]->feature->name != NULL)
+               if (reg_list[i]->feature != NULL
+                       && reg_list[i]->feature->name != NULL
                        && (strcmp(reg_list[i]->feature->name, ""))) {
                        /* We found a feature, check if the feature is already in the
                         * table. If not, allocate a new entry for the table and
@@ -2900,7 +2901,7 @@ static int gdb_target_add_one(struct target *target)
                portnumber = strtol(gdb_port_next, &end, 0);
                if (!*end) {
                        if (parse_long(gdb_port_next, &portnumber) == ERROR_OK) {
-                               free((void *)gdb_port_next);
+                               free(gdb_port_next);
                                gdb_port_next = alloc_printf("%d", portnumber+1);
                        }
                }
@@ -2947,7 +2948,7 @@ COMMAND_HANDLER(handle_gdb_port_command)
 {
        int retval = CALL_COMMAND_HANDLER(server_pipe_command, &gdb_port);
        if (ERROR_OK == retval) {
-               free((void *)gdb_port_next);
+               free(gdb_port_next);
                gdb_port_next = strdup(gdb_port);
        }
        return retval;