Add tests for some issues

src/test/ui/issues/auxiliary/issue-29265.rs

@@ -0,0 +1,9 @@
+#![crate_type = "lib"]
+
+pub struct SomeType {
+    pub some_member: usize,
+}
+
+pub static SOME_VALUE: SomeType = SomeType {
+    some_member: 1,
+};

src/test/ui/issues/auxiliary/issue-49544.rs

@@ -0,0 +1,7 @@
+#![crate_type = "lib"]
+
+pub fn foo() -> Vec<String> {
+    std::env::args()
+        .skip(1)
+        .collect()
+}

src/test/ui/issues/issue-29265.rs

@@ -0,0 +1,10 @@
+// aux-build:issue-29265.rs
+// check-pass
+
+extern crate issue_29265 as lib;
+
+static _UNUSED: &'static lib::SomeType = &lib::SOME_VALUE;
+
+fn main() {
+    vec![0u8; lib::SOME_VALUE.some_member];
+}

src/test/ui/issues/issue-37433.rs

@@ -0,0 +1,10 @@
+// ignore-emscripten no asm! support
+
+#![feature(asm)]
+
+fn main() {
+    unsafe {
+        asm!("" :: "r"(""));
+        //~^ ERROR: invalid value for constraint in inline assembly
+    }
+}

src/test/ui/issues/issue-37433.stderr

@@ -0,0 +1,8 @@
+error[E0669]: invalid value for constraint in inline assembly
+  --> $DIR/issue-37433.rs:7:24
+   |
+LL |         asm!("" :: "r"(""));
+   |                        ^^
+
+error: aborting due to previous error
+

src/test/ui/issues/issue-49544.rs

@@ -0,0 +1,9 @@
+// aux-build:issue-49544.rs
+// check-pass
+
+extern crate issue_49544;
+use issue_49544::foo;
+
+fn main() {
+    let _ = foo();
+}