vnc: Fix compile error on x86_64 with -D_VNC_DEBUG=1

[qemu.git] / qemu-malloc.c

diff --git a/qemu-malloc.c b/qemu-malloc.c
index 16d3c2e1f453884c3184575f5743e675cd574bc9..6cdc5deb788aecf955bd3fdb7806b9ffb95ad1e5 100644 (file)
--- a/qemu-malloc.c
+++ b/qemu-malloc.c
@@ -22,6 +22,15 @@
  * THE SOFTWARE.
  */
 #include "qemu-common.h"
+#include <stdlib.h>
+
+static void *oom_check(void *ptr)
+{
+    if (ptr == NULL) {
+        abort();
+    }
+    return ptr;
+}
 
 void *get_mmap_addr(unsigned long size)
 {
@@ -33,17 +42,35 @@ void qemu_free(void *ptr)
     free(ptr);
 }
 
+static int allow_zero_malloc(void)
+{
+#if defined(CONFIG_ZERO_MALLOC)
+    return 1;
+#else
+    return 0;
+#endif
+}
+
 void *qemu_malloc(size_t size)
 {
-    return malloc(size);
+    if (!size && !allow_zero_malloc()) {
+        abort();
+    }
+    return oom_check(malloc(size ? size : 1));
+}
+
+void *qemu_realloc(void *ptr, size_t size)
+{
+    if (!size && !allow_zero_malloc()) {
+        abort();
+    }
+    return oom_check(realloc(ptr, size ? size : 1));
 }
 
 void *qemu_mallocz(size_t size)
 {
     void *ptr;
     ptr = qemu_malloc(size);
-    if (!ptr)
-        return NULL;
     memset(ptr, 0, size);
     return ptr;
 }
@@ -51,9 +78,23 @@ void *qemu_mallocz(size_t size)
 char *qemu_strdup(const char *str)
 {
     char *ptr;
-    ptr = qemu_malloc(strlen(str) + 1);
-    if (!ptr)
-        return NULL;
-    strcpy(ptr, str);
+    size_t len = strlen(str);
+    ptr = qemu_malloc(len + 1);
+    memcpy(ptr, str, len + 1);
     return ptr;
 }
+
+char *qemu_strndup(const char *str, size_t size)
+{
+    const char *end = memchr(str, 0, size);
+    char *new;
+
+    if (end) {
+        size = end - str;
+    }
+
+    new = qemu_malloc(size + 1);
+    new[size] = 0;
+
+    return memcpy(new, str, size);
+}