Rob Shearman : widl: Increment the buffer offset by 8 for embedded pointers inside varying arrays in varying structures .

[Alexandre Julliard]

Module: wine
Branch: master
Commit: fb224429f7f5bcd66798ceb1709c048789238e41
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=fb224429f7f5bcd66798ceb170...

Author: Rob Shearman 
Date:   Wed Jul  2 00:00:43 2008 +0100

widl: Increment the buffer offset by 8 for embedded pointers inside varying arrays in varying structures.

The 8 bytes are for the variance and offset and are added just before
the array, as seen in the marshalling code in rpcrt4. No offset needs
to be added for non-varying structures since the buffer mark is set
after the conformance in marshalled or unmarshalled.

---

tools/widl/typegen.c |   20 +++++++++++---------
 1 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/tools/widl/typegen.c b/tools/widl/typegen.c
index f7a189a..79ae0f4 100644
--- a/tools/widl/typegen.c
+++ b/tools/widl/typegen.c
@@ -1437,6 +1437,14 @@ static int write_varying_array_pointer_descriptions(
             if (offset_in_memory && offset_in_buffer)
             {
                 size_t padding;
+
+                if (is_array(v->type) && v->type->length_is)
+                {
+                    *offset_in_buffer = ROUND_SIZE(*offset_in_buffer, 4);
+                    /* skip over variance and offset in buffer */
+                    *offset_in_buffer += 8;
+                }
+
                 align = 0;
                 type_memsize(v->type, &align);
                 padding = ROUNDING(*offset_in_memory, align);
@@ -1470,19 +1478,13 @@ static void write_pointer_description(FILE *file, type_t *type,
 {
     size_t offset_in_buffer;
     size_t offset_in_memory;
-    size_t conformance = 0;
-
-    if (type->type == RPC_FC_CVSTRUCT)
-        conformance = 8;
-    else if (type->type == RPC_FC_CSTRUCT || type->type == RPC_FC_CPSTRUCT)
-        conformance = 4;

/* pass 1: search for single instance of a pointer (i.e. don't descend
      * into arrays) */
     if (!is_array(type))
     {
         offset_in_memory = 0;
-        offset_in_buffer = conformance;
+        offset_in_buffer = 0;
         write_no_repeat_pointer_descriptions(
             file, type,
             &offset_in_memory, &offset_in_buffer, typestring_offset);
@@ -1490,7 +1492,7 @@ static void write_pointer_description(FILE *file, type_t *type,

/* pass 2: search for pointers in fixed arrays */
     offset_in_memory = 0;
-    offset_in_buffer = conformance;
+    offset_in_buffer = 0;
     write_fixed_array_pointer_descriptions(
         file, NULL, type,
         &offset_in_memory, &offset_in_buffer, typestring_offset);
@@ -1512,7 +1514,7 @@ static void write_pointer_description(FILE *file, type_t *type,

/* pass 4: search for pointers in varying arrays */
     offset_in_memory = 0;
-    offset_in_buffer = conformance;
+    offset_in_buffer = 0;
     write_varying_array_pointer_descriptions(
             file, NULL, type,
             &offset_in_memory, &offset_in_buffer, typestring_offset);