core.stdc.stdarg: fix va_arg() for x86 platform.

kinke · kinke · commit 78b0712a60a6 · 2015-02-23T21:45:36.000+01:00
LLVM's intrinsic apparently doesn't work for aggregate types.
diff --git a/src/core/stdc/stdarg.d b/src/core/stdc/stdarg.d
@@ -337,6 +337,12 @@ version( LDC )
             ap += size_t.sizeof;
             return arg;
         }
+        else version( X86 )
+        {
+            T arg = *cast(T*)ap;
+            ap += (T.sizeof + size_t.sizeof - 1) & ~(size_t.sizeof - 1);
+            return arg;
+        }
         else version( ARM )
         {
             T arg = *cast(T*)ap;
@@ -361,6 +367,11 @@ version( LDC )
                 parmn = *cast(T*)ap;
             ap += size_t.sizeof;
         }
+        else version( X86 )
+        {
+            parmn = *cast(T*)ap;
+            ap += (T.sizeof + size_t.sizeof - 1) & ~(size_t.sizeof - 1);
+        }
         else version( ARM )
         {
             parmn = *cast(T*)ap;

Original file line number	Diff line number	Diff line change
`@@ -337,6 +337,12 @@ version( LDC )`
`337`	`337`	`ap += size_t.sizeof;`
`338`	`338`	`return arg;`
`339`	`339`	`}`
	`340`	`+ else version( X86 )`
	`341`	`+ {`
	`342`	`+ T arg = cast(T)ap;`
	`343`	`+ ap += (T.sizeof + size_t.sizeof - 1) & ~(size_t.sizeof - 1);`
	`344`	`+ return arg;`
	`345`	`+ }`
`340`	`346`	`else version( ARM )`
`341`	`347`	`{`
`342`	`348`	`T arg = cast(T)ap;`
`@@ -361,6 +367,11 @@ version( LDC )`
`361`	`367`	`parmn = cast(T)ap;`
`362`	`368`	`ap += size_t.sizeof;`
`363`	`369`	`}`
	`370`	`+ else version( X86 )`
	`371`	`+ {`
	`372`	`+ parmn = cast(T)ap;`
	`373`	`+ ap += (T.sizeof + size_t.sizeof - 1) & ~(size_t.sizeof - 1);`
	`374`	`+ }`
`364`	`375`	`else version( ARM )`
`365`	`376`	`{`
`366`	`377`	`parmn = cast(T)ap;`