[Issue 4089] crash when creating JSON output for incomplete struct

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4089



--- Comment #2 from Rainer Schuetze <r.sagitario at gmx.de> 2010-04-21 11:09:05 PDT ---
An almost identical patch is also needed for incomplete EnumDeclarations:

Index: json.c
===================================================================
--- json.c    (revision 433)
+++ json.c    (working copy)
@@ -386,19 +386,23 @@
     if (memtype)
         JsonProperty(buf, "base", memtype->toChars());

-    JsonString(buf, Pmembers);
-    buf->writestring(" : [\n");
-    size_t offset = buf->offset;
-    for (int i = 0; i < members->dim; i++)
-    {   Dsymbol *s = (Dsymbol *)members->data[i];
-        if (offset != buf->offset)
-        {   buf->writestring(",\n");
-            offset = buf->offset;
+    if(members)
+    {
+        JsonString(buf, Pmembers);
+        buf->writestring(" : [\n");
+        size_t offset = buf->offset;
+        for (int i = 0; i < members->dim; i++)
+        {   Dsymbol *s = (Dsymbol *)members->data[i];
+            if (offset != buf->offset)
+            {   buf->writestring(",\n");
+                offset = buf->offset;
+            }
+            s->toJsonBuffer(buf);
         }
-        s->toJsonBuffer(buf);
+        JsonRemoveComma(buf);
+        buf->writestring("]\n");
     }
     JsonRemoveComma(buf);
-    buf->writestring("]\n");

     buf->writestring("}\n");
 }

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