From 3468762d7a830bd68dafdc4c8d489f965fd48b42 Mon Sep 17 00:00:00 2001
From: "Rafael G. Martins" <rafael@rafaelmartins.eng.br>
Date: Sun, 19 Jul 2015 21:54:57 -0300
Subject: utils/mem: added safe realloc

---
 src/utils/mem.c     | 14 ++++++++++++++
 src/utils/strings.c |  8 ++++----
 src/utils/utils.h   |  1 +
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/utils/mem.c b/src/utils/mem.c
index 7befc73..7c5e0a2 100644
--- a/src/utils/mem.c
+++ b/src/utils/mem.c
@@ -26,3 +26,17 @@ b_malloc(size_t size)
     }
     return rv;
 }
+
+
+void*
+b_realloc(void *ptr, size_t size)
+{
+    // simple things even simpler :P
+    void *rv = realloc(ptr, size);
+    if (rv == NULL && size != 0) {
+        fprintf(stderr, "fatal error: Failed to reallocate memory!\n");
+        free(ptr);
+        exit(1);
+    }
+    return rv;
+}
diff --git a/src/utils/strings.c b/src/utils/strings.c
index 502cfd4..40174a1 100644
--- a/src/utils/strings.c
+++ b/src/utils/strings.c
@@ -137,14 +137,14 @@ b_str_split(const char *str, char c, unsigned int max_pieces)
         if (str[0] == '\0')
             break;
         if ((str[i] == c && (!max_pieces || count + 1 < max_pieces)) || str[i] == '\0') {
-            rv = realloc(rv, (count + 1) * sizeof(char*));
+            rv = b_realloc(rv, (count + 1) * sizeof(char*));
             rv[count] = b_malloc(i - start + 1);
             memcpy(rv[count], str + start, i - start);
             rv[count++][i - start] = '\0';
             start = i + 1;
         }
     }
-    rv = realloc(rv, (count + 1) * sizeof(char*));
+    rv = b_realloc(rv, (count + 1) * sizeof(char*));
     rv[count] = NULL;
     return rv;
 }
@@ -238,7 +238,7 @@ b_string_append_len(b_string_t *str, const char *suffix, size_t len)
     str->len += len;
     if (str->len + 1 > str->allocated_len) {
         str->allocated_len = (((str->len + 1) / B_STRING_CHUNK_SIZE) + 1) * B_STRING_CHUNK_SIZE;
-        str->str = realloc(str->str, str->allocated_len);
+        str->str = b_realloc(str->str, str->allocated_len);
     }
     memcpy(str->str + old_len, suffix, len);
     str->str[str->len] = '\0';
@@ -262,7 +262,7 @@ b_string_append_c(b_string_t *str, char c)
     str->len += 1;
     if (str->len + 1 > str->allocated_len) {
         str->allocated_len = (((str->len + 1) / B_STRING_CHUNK_SIZE) + 1) * B_STRING_CHUNK_SIZE;
-        str->str = realloc(str->str, str->allocated_len);
+        str->str = b_realloc(str->str, str->allocated_len);
     }
     str->str[old_len] = c;
     str->str[str->len] = '\0';
diff --git a/src/utils/utils.h b/src/utils/utils.h
index 8029a6c..5a1505b 100644
--- a/src/utils/utils.h
+++ b/src/utils/utils.h
@@ -72,5 +72,6 @@ unsigned int b_trie_size(b_trie_t *trie);
 void b_trie_foreach(b_trie_t *trie, void (*func)(const char *key, void *data));
 
 void* b_malloc(size_t size);
+void* b_realloc(void *ptr, size_t size);
 
 #endif /* _UTILS_UTILS_H */
-- 
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