diff --git a/libtcc.c b/libtcc.c
index fc3213b..1c5e619 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -237,6 +237,8 @@ PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
     mem_cur_size -= malloc_usable_size(ptr);
 #endif
     ptr1 = realloc(ptr, size);
+    if (!ptr1 && size)
+        tcc_error("memory full");
 #ifdef MEM_DEBUG
     /* NOTE: count not correct if alloc error, but not critical */
     mem_cur_size += malloc_usable_size(ptr1);
@@ -282,8 +284,6 @@ PUB_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
         else
             nb_alloc = nb * 2;
         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
-        if (!pp)
-            tcc_error("memory full");
         *ptab = pp;
     }
     pp[nb++] = data;
@@ -377,8 +377,6 @@ ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
     while (size < new_size)
         size = size * 2;
     data = tcc_realloc(sec->data, size);
-    if (!data)
-        tcc_error("memory full");
     memset(data + sec->data_allocated, 0, size - sec->data_allocated);
     sec->data = data;
     sec->data_allocated = size;
diff --git a/tccelf.c b/tccelf.c
index 0c764ba..04975d9 100644
--- a/tccelf.c
+++ b/tccelf.c
@@ -836,8 +836,6 @@ static void put_got_offset(TCCState *s1, int index, unsigned long val)
         while (index >= n)
             n *= 2;
         tab = tcc_realloc(s1->got_offsets, n * sizeof(unsigned long));
-        if (!tab)
-            tcc_error("memory full");
         s1->got_offsets = tab;
         memset(s1->got_offsets + s1->nb_got_offsets, 0,
                (n - s1->nb_got_offsets) * sizeof(unsigned long));
diff --git a/tccpp.c b/tccpp.c
index f88c030..913bded 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -112,8 +112,6 @@ static void cstr_realloc(CString *cstr, int new_size)
     while (size < new_size)
         size = size * 2;
     data = tcc_realloc(cstr->data_allocated, size);
-    if (!data)
-        tcc_error("memory full");
     cstr->data_allocated = data;
     cstr->size_allocated = size;
     cstr->data = data;
@@ -200,8 +198,6 @@ static TokenSym *tok_alloc_new(TokenSym **pts, const char *str, int len)
     i = tok_ident - TOK_IDENT;
     if ((i % TOK_ALLOC_INCR) == 0) {
         ptable = tcc_realloc(table_ident, (i + TOK_ALLOC_INCR) * sizeof(TokenSym *));
-        if (!ptable)
-            tcc_error("memory full");
         table_ident = ptable;
     }
 
@@ -844,8 +840,6 @@ static int *tok_str_realloc(TokenString *s)
         len = s->allocated_len * 2;
     }
     str = tcc_realloc(s->str, len * sizeof(int));
-    if (!str)
-        tcc_error("memory full");
     s->allocated_len = len;
     s->str = str;
     return str;