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# XPTC_InvokeByIndex crashes
# Bug 339782  [ARM] XPTC_InvokeByIndex crashes when cross-compiled under GCC 3.4.x with EABI (CodeSourcery)
Index: mozilla/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_arm.cpp
===================================================================
--- mozilla.orig/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_arm.cpp
+++ mozilla/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_arm.cpp
@@ -51,22 +51,32 @@
 #ifdef __ARM_EABI__
 #define DOUBLEWORD_ALIGN(p) ((PRUint32 *)((((PRUint32)(p)) + 7) & 0xfffffff8))
 #define VAR_STACK_SIZE_64 3
 #else
 #define DOUBLEWORD_ALIGN(p) (p)
 #define VAR_STACK_SIZE_64 2
 #endif
 
+#ifdef __ARM_EABI__
+#define DOUBLEWORD_ALIGN(p) ((PRUint32 *)((((PRUint32)(p)) + 7) & 0xfffffff8))
+#else
+#define DOUBLEWORD_ALIGN(p) (p)
+#endif
+
 // Remember that these 'words' are 32bit DWORDS
 
 static PRUint32
 invoke_count_words(PRUint32 paramCount, nsXPTCVariant* s)
 {
     PRUint32 result = 0;
+
+    /* Note that we give a "worst case" estimate of how much stack _might_ be
+     * needed, rather than the real count - this should be safe */
+
     for(PRUint32 i = 0; i < paramCount; i++, s++)
     {
         if(s->IsPtrData())
         {
             result++;
             continue;
         }
         switch(s->type)