Teach sema and codegen about the difference between address of labels,
which is a common idiom to improve PIC'ness of code using the addr of
label extension. This implementation is a gross hack, but the only other
alternative would be to teach evalutate about this horrid combination.
While GCC allows things like "&&foo - &&bar + 1", people don't use this
in practice. This implements PR5131.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83957 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/statements.c b/test/CodeGen/statements.c
index c50d1d5..45bbd9a 100644
--- a/test/CodeGen/statements.c
+++ b/test/CodeGen/statements.c
@@ -18,7 +18,9 @@
blong:
bing:
;
-static long x = &&bar; // - &&baz;
+
+// PR5131
+static long x = &&bar - &&baz;
static long y = &&baz;
&&bing;
&&blong;