Fixed segfault when passing malformed command arguments to solve

1 files changed, 4 insertions, 4 deletions

diff --git a/src/commands.c b/src/commands.c
index 287ee67..b90a7f5 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -130,7 +130,7 @@ solve_parse_args(int c, char **v)
         a->opts->print_number  = true;
 
         for (i = 0; i < c; i++) {
-                if (!strcmp(v[i], "-m")) {
+                if (!strcmp(v[i], "-m") && i+1 < c) {
                         val = strtol(v[++i], NULL, 10);
                         if (val < 0 || val > 100) {
                                 fprintf(stderr,
@@ -139,7 +139,7 @@ solve_parse_args(int c, char **v)
                                 return a;
                         }
                         a->opts->min_moves = val;
-                } else if (!strcmp(v[i], "-M")) {
+                } else if (!strcmp(v[i], "-M") && i+1 < c) {
                         val = strtol(v[++i], NULL, 10);
                         if (val < 0 || val > 100) {
                                 fprintf(stderr,
@@ -148,7 +148,7 @@ solve_parse_args(int c, char **v)
                                 return a;
                         }
                         a->opts->max_moves = val;
-                } else if (!strcmp(v[i], "-t")) {
+                } else if (!strcmp(v[i], "-t") && i+1 < c) {
                         val = strtol(v[++i], NULL, 10);
                         if (val < 1 || val > 64) {
                                 fprintf(stderr,
@@ -157,7 +157,7 @@ solve_parse_args(int c, char **v)
                                 return a;
                         }
                         a->opts->nthreads = val;
-                } else if (!strcmp(v[i], "-s")) {
+                } else if (!strcmp(v[i], "-s") && i+1 < c) {
                         val = strtol(v[++i], NULL, 10);
                         if (val < 1 || val > 1000000) {
                                 fprintf(stderr,