test: Make gccgo believe that the variables can change.

This test is supposed to test runtime behaviour.  However,
gccgo is smart enough to see that the variables are local to
the package and that they never change.  Add a function so
that gccgo thinks that the variables can in fact vary, so that
the test works at runtime as expected.

R=rsc
CC=golang-dev
https://golang.org/cl/2178041

diff --git a/test/zerodivide.go b/test/zerodivide.go
index 224797fcd9dc7707514501c624a3ab9d8b20045e..5fe1eb00d389f64b7ccc108d82da128e38653d83 100644 (file)
--- a/test/zerodivide.go
+++ b/test/zerodivide.go
@@ -46,6 +46,30 @@ var (
        c128, d128, e128 complex128 = 0+0i, 0+0i, 1+1i
 )
 
+// Fool gccgo into thinking that these variables can change.
+func NotCalled() {
+       i++; j++; k++
+       i8++; j8++; k8++
+       i16++; j16++; k16++
+       i32++; j32++; k32++
+       i64++; j64++; k64++
+
+       u++; v++; w++
+       u8++; v8++; w8++
+       u16++; v16++; w16++
+       u32++; v32++; w32++
+       u64++; v64++; w64++
+       up++; vp++; wp++
+
+       f += 1; g += 1; h += 1
+       f32 += 1; g32 += 1; h32 += 1
+       f64 += 1; g64 += 1; h64 += 1
+
+       c += 1+1i; d += 1+1i; e += 1+1i
+       c64 += 1+1i; d64 += 1+1i; e64 += 1+1i
+       c128 += 1+1i; d128 += 1+1i; e128 += 1+1i
+}
+
 var tmp interface{}
 
 // We could assign to _ but the compiler optimizes it too easily.