TP 13 exo1: Only free when needed the array

[TD_C.git] / TP_13 / exo1 / lib / array.c

diff --git a/TP_13/exo1/lib/array.c b/TP_13/exo1/lib/array.c
index db8ab7e408d625d00db9873d5c363d5d22d1e0c8..4445ca81fa00178d9b78d9b07f2656597300aa0a 100644 (file)
--- a/TP_13/exo1/lib/array.c
+++ b/TP_13/exo1/lib/array.c
@@ -15,7 +15,8 @@ int* create_tab(int tab[], unsigned tab_size) {
 }
 
 void free_tab(int tab[]) {
-    free(tab);
+    if (!tab)
+        free(tab);
 }
 
 /* we suppose both tabs are already created */
@@ -43,6 +44,7 @@ int* concat_tab(int tab1[], unsigned tab_size1, int tab2[], unsigned tab_size2)
 
 int* resize_tab(int tab[], unsigned old_tab_size, unsigned new_tab_size) {
     tab = realloc(tab, sizeof(int) * new_tab_size);
+    /* zero by default the added cells */
     if (old_tab_size < new_tab_size) {
         for (unsigned i = old_tab_size; i < new_tab_size; i++) {
             tab[i] = 0;