1 files changed, 75 insertions, 0 deletions
diff --git a/externals/mysql/mysys/my_realloc.c b/externals/mysql/mysys/my_realloc.c
new file mode 100644
index 00000000000..d686f4cfb17
--- /dev/null
+++ b/externals/mysql/mysys/my_realloc.c
@@ -0,0 +1,75 @@
+/* Copyright (C) 2000 MySQL AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#ifdef SAFEMALLOC			/* We don't need SAFEMALLOC here */
+#undef SAFEMALLOC
+#endif
+
+#include "mysys_priv.h"
+#include "mysys_err.h"
+
+	/* My memory re allocator */
+
+/**
+   @brief wrapper around realloc()
+
+   @param  oldpoint        pointer to currently allocated area
+   @param  size            new size requested, must be >0
+   @param  my_flags        flags
+
+   @note if size==0 realloc() may return NULL; my_realloc() treats this as an
+   error which is not the intention of realloc()
+*/
+void* my_realloc(void* oldpoint, size_t size, myf my_flags)
+{
+  void *point;
+  DBUG_ENTER("my_realloc");
+  DBUG_PRINT("my",("ptr: %p  size: %lu  my_flags: %d", oldpoint,
+                   (ulong) size, my_flags));
+
+  DBUG_ASSERT(size > 0);
+  if (!oldpoint && (my_flags & MY_ALLOW_ZERO_PTR))
+    DBUG_RETURN(my_malloc(size,my_flags));
+#ifdef USE_HALLOC
+  if (!(point = malloc(size)))
+  {
+    if (my_flags & MY_FREE_ON_ERROR)
+      my_free(oldpoint,my_flags);
+    if (my_flags & MY_HOLD_ON_ERROR)
+      DBUG_RETURN(oldpoint);
+    my_errno=errno;
+    if (my_flags & MY_FAE+MY_WME)
+      my_error(EE_OUTOFMEMORY, MYF(ME_BELL+ME_WAITTANG),size);
+  }
+  else
+  {
+    memcpy(point,oldpoint,size);
+    free(oldpoint);
+  }
+#else
+  if ((point= (uchar*) realloc(oldpoint,size)) == NULL)
+  {
+    if (my_flags & MY_FREE_ON_ERROR)
+      my_free(oldpoint, my_flags);
+    if (my_flags & MY_HOLD_ON_ERROR)
+      DBUG_RETURN(oldpoint);
+    my_errno=errno;
+    if (my_flags & (MY_FAE+MY_WME))
+      my_error(EE_OUTOFMEMORY, MYF(ME_BELL+ME_WAITTANG), size);
+  }
+#endif
+  DBUG_PRINT("exit",("ptr: %p", point));
+  DBUG_RETURN(point);
+} /* my_realloc */