Some more typestate tests.

src/Makefile

@@ -451,6 +451,7 @@ TEST_XFAILS_LLVM := $(addprefix test/run-pass/, \
                       u8-incr.rs \
                       unit.rs \
                       user.rs \
+                      use-uninit.rs \
                       utf8.rs \
                       vec-append.rs \
                       vec-concat.rs \

src/test/compile-fail/use-uninit-2.rs

@@ -0,0 +1,13 @@
+// error-pattern:Unsatisfied precondition
+
+fn foo(int x) {
+  log x;
+}
+
+fn main() {
+  let int x;
+  if (1 > 2) {
+    x = 10;
+  }
+  foo(x);
+}

src/test/compile-fail/use-uninit-3.rs

@@ -0,0 +1,15 @@
+// error-pattern:Unsatisfied precondition
+
+fn foo(int x) {
+  log x;
+}
+
+fn main() {
+  let int x;
+  if (1 > 2) {
+    log "whoops";
+  } else {
+    x = 10;
+  }
+  foo(x);
+}

src/test/compile-fail/use-uninit.rs

@@ -6,9 +6,5 @@ fn foo(int x) {
 
 fn main() {
   let int x;
-  if (1 > 2) {
-    x = 10;
-  } else {
-  }
   foo(x);
 }

src/test/run-pass/lazy-init.rs

@@ -0,0 +1,13 @@
+fn foo(int x) {
+  log x;
+}
+
+fn main() {
+  let int x;
+  if (1 > 2) {
+    x = 12;
+  } else {
+    x = 10;
+  }
+  foo(x);
+}