1 files changed, 13 insertions, 9 deletions

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 876cada4b2..6242908d6c 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -112,7 +112,7 @@ build_append_namestringv(GArray *array, const char *format, va_list ap)
     switch (seg_count) {
     case 1:
         if (!*s) {
-            build_append_byte(array, 0x0); /* NullName */
+            build_append_byte(array, 0x00); /* NullName */
         } else {
             build_append_nameseg(array, s);
         }
@@ -141,6 +141,7 @@ build_append_namestringv(GArray *array, const char *format, va_list ap)
     g_strfreev(segs);
 }
 
+GCC_FMT_ATTR(2, 3)
 static void build_append_namestring(GArray *array, const char *format, ...)
 {
     va_list ap;
@@ -335,26 +336,29 @@ static void build_buffer(GArray *array, uint8_t op)
 
 void aml_append(Aml *parent_ctx, Aml *child)
 {
+    GArray *buf = build_alloc_array();
+    build_append_array(buf, child->buf);
+
     switch (child->block_flags) {
     case AML_OPCODE:
         build_append_byte(parent_ctx->buf, child->op);
         break;
     case AML_EXT_PACKAGE:
-        build_extop_package(child->buf, child->op);
+        build_extop_package(buf, child->op);
         break;
     case AML_PACKAGE:
-        build_package(child->buf, child->op);
+        build_package(buf, child->op);
         break;
     case AML_RES_TEMPLATE:
-        build_append_byte(child->buf, 0x79); /* EndTag */
+        build_append_byte(buf, 0x79); /* EndTag */
         /*
          * checksum operations are treated as succeeded if checksum
          * field is zero. [ACPI Spec 1.0b, 6.4.2.8 End Tag]
          */
-        build_append_byte(child->buf, 0);
+        build_append_byte(buf, 0);
         /* fall through, to pack resources in buffer */
     case AML_BUFFER:
-        build_buffer(child->buf, child->op);
+        build_buffer(buf, child->op);
         break;
     case AML_NO_OPCODE:
         break;
@@ -362,7 +366,8 @@ void aml_append(Aml *parent_ctx, Aml *child)
         assert(0);
         break;
     }
-    build_append_array(parent_ctx->buf, child->buf);
+    build_append_array(parent_ctx->buf, buf);
+    build_free_array(buf);
 }
 
 /* ACPI 1.0b: 16.2.5.1 Namespace Modifier Objects Encoding: DefScope */
@@ -444,7 +449,7 @@ Aml *aml_and(Aml *arg1, Aml *arg2)
     Aml *var = aml_opcode(0x7B /* AndOp */);
     aml_append(var, arg1);
     aml_append(var, arg2);
-    build_append_int(var->buf, 0x00 /* NullNameOp */);
+    build_append_byte(var->buf, 0x00 /* NullNameOp */);
     return var;
 }
 
@@ -542,7 +547,6 @@ Aml *aml_equal(Aml *arg1, Aml *arg2)
     Aml *var = aml_opcode(0x93 /* LequalOp */);
     aml_append(var, arg1);
     aml_append(var, arg2);
-    build_append_int(var->buf, 0x00); /* NullNameOp */
     return var;
 }