travis: Get an emscripten builder online

This commit adds a new entry to the Travis matrix which will execute emscripten
test suites. Along the way it updates a few bits of the test suite to continue
passing on emscripten, such as:

* Ignoring i128/u128 tests as they're presumably just not working (didn't
  investigate as to why)
* Disabling a few process tests (not working on emscripten)
* Ignore some num tests in libstd (#39119)
* Fix some warnings when compiling

20 files changed, 29 insertions, 0 deletions

diff --git a/src/test/codegen/fastcall-inreg.rs b/src/test/codegen/fastcall-inreg.rs
index e1dda4d2be0..1cbde9b1a7c 100644
--- a/src/test/codegen/fastcall-inreg.rs
+++ b/src/test/codegen/fastcall-inreg.rs
@@ -53,6 +53,7 @@
 // ignore-shave
 // ignore-wasm32
 // ignore-wasm64
+// ignore-emscripten
 
 // compile-flags: -C no-prepopulate-passes
 
diff --git a/src/test/compile-fail/asm-bad-clobber.rs b/src/test/compile-fail/asm-bad-clobber.rs
index 85832ddefe2..cb931329051 100644
--- a/src/test/compile-fail/asm-bad-clobber.rs
+++ b/src/test/compile-fail/asm-bad-clobber.rs
@@ -12,6 +12,7 @@
 // ignore-arm
 // ignore-aarch64
 // ignore-s390x
+// ignore-emscripten
 
 #![feature(asm, rustc_attrs)]
 
diff --git a/src/test/compile-fail/asm-in-bad-modifier.rs b/src/test/compile-fail/asm-in-bad-modifier.rs
index a4d076fc90d..7ba5beac213 100644
--- a/src/test/compile-fail/asm-in-bad-modifier.rs
+++ b/src/test/compile-fail/asm-in-bad-modifier.rs
@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // ignore-s390x
+// ignore-emscripten
 
 #![feature(asm)]
 
diff --git a/src/test/compile-fail/asm-misplaced-option.rs b/src/test/compile-fail/asm-misplaced-option.rs
index fbfc20f8d04..bafbf625e35 100644
--- a/src/test/compile-fail/asm-misplaced-option.rs
+++ b/src/test/compile-fail/asm-misplaced-option.rs
@@ -12,6 +12,7 @@
 // ignore-arm
 // ignore-aarch64
 // ignore-s390x
+// ignore-emscripten
 
 #![feature(asm, rustc_attrs)]
 
diff --git a/src/test/compile-fail/asm-out-assign-imm.rs b/src/test/compile-fail/asm-out-assign-imm.rs
index 1329959fe49..161c0b977ff 100644
--- a/src/test/compile-fail/asm-out-assign-imm.rs
+++ b/src/test/compile-fail/asm-out-assign-imm.rs
@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // ignore-s390x
+// ignore-emscripten
 
 #![feature(asm)]
 
diff --git a/src/test/compile-fail/asm-out-no-modifier.rs b/src/test/compile-fail/asm-out-no-modifier.rs
index d610f9e3440..cb8fb19a7c7 100644
--- a/src/test/compile-fail/asm-out-no-modifier.rs
+++ b/src/test/compile-fail/asm-out-no-modifier.rs
@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // ignore-s390x
+// ignore-emscripten
 
 #![feature(asm)]
 
diff --git a/src/test/compile-fail/asm-out-read-uninit.rs b/src/test/compile-fail/asm-out-read-uninit.rs
index 360f89dda9c..42bff4c633a 100644
--- a/src/test/compile-fail/asm-out-read-uninit.rs
+++ b/src/test/compile-fail/asm-out-read-uninit.rs
@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // ignore-s390x
+// ignore-emscripten
 
 #![feature(asm)]
 
diff --git a/src/test/compile-fail/asm-src-loc-codegen-units.rs b/src/test/compile-fail/asm-src-loc-codegen-units.rs
index 79f0c436759..df1a6d52f57 100644
--- a/src/test/compile-fail/asm-src-loc-codegen-units.rs
+++ b/src/test/compile-fail/asm-src-loc-codegen-units.rs
@@ -12,6 +12,7 @@
 // ignore-stage1
 // compile-flags: -C codegen-units=2
 // error-pattern: build without -C codegen-units for more exact errors
+// ignore-emscripten
 
 #![feature(asm)]
 
diff --git a/src/test/compile-fail/asm-src-loc.rs b/src/test/compile-fail/asm-src-loc.rs
index e3cece7c8f0..59b47c2408d 100644
--- a/src/test/compile-fail/asm-src-loc.rs
+++ b/src/test/compile-fail/asm-src-loc.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-emscripten
+
 #![feature(asm)]
 
 fn main() {
diff --git a/src/test/compile-fail/cdylib-deps-must-be-static.rs b/src/test/compile-fail/cdylib-deps-must-be-static.rs
index 4b160f26e92..853507cbc6d 100644
--- a/src/test/compile-fail/cdylib-deps-must-be-static.rs
+++ b/src/test/compile-fail/cdylib-deps-must-be-static.rs
@@ -11,6 +11,7 @@
 // error-pattern: dependency `cdylib_dep` not found in rlib format
 // aux-build:cdylib-dep.rs
 // ignore-musl
+// ignore-emscripten
 
 #![crate_type = "cdylib"]
 
diff --git a/src/test/compile-fail/macro-expanded-include/test.rs b/src/test/compile-fail/macro-expanded-include/test.rs
index e1e85ddb2c1..bcc2c10653f 100644
--- a/src/test/compile-fail/macro-expanded-include/test.rs
+++ b/src/test/compile-fail/macro-expanded-include/test.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-emscripten
+
 #![feature(asm, rustc_attrs)]
 #![allow(unused)]
 
diff --git a/src/test/compile-fail/panic-runtime/abort-link-to-unwind-dylib.rs b/src/test/compile-fail/panic-runtime/abort-link-to-unwind-dylib.rs
index c3242a5082b..1fd60b15a72 100644
--- a/src/test/compile-fail/panic-runtime/abort-link-to-unwind-dylib.rs
+++ b/src/test/compile-fail/panic-runtime/abort-link-to-unwind-dylib.rs
@@ -10,6 +10,7 @@
 
 // compile-flags:-C panic=abort -C prefer-dynamic
 // ignore-musl - no dylibs here
+// ignore-emscripten
 // error-pattern:`panic_unwind` is not compiled with this crate's panic strategy
 
 // This is a test where the local crate, compiled with `panic=abort`, links to
diff --git a/src/test/compile-fail/two-allocators-3.rs b/src/test/compile-fail/two-allocators-3.rs
index 7782d0e338e..965e4e0e2ea 100644
--- a/src/test/compile-fail/two-allocators-3.rs
+++ b/src/test/compile-fail/two-allocators-3.rs
@@ -11,6 +11,7 @@
 // aux-build:allocator1.rs
 // error-pattern: cannot link together two allocators
 // ignore-musl no dylibs on musl yet
+// ignore-emscripten
 
 // We're linking std dynamically (via -C prefer-dynamic for this test) which
 // has an allocator and then we're also linking in a new allocator (allocator1)
diff --git a/src/test/run-pass-valgrind/down-with-thread-dtors.rs b/src/test/run-pass-valgrind/down-with-thread-dtors.rs
index 0bf10c67d9f..90c20444842 100644
--- a/src/test/run-pass-valgrind/down-with-thread-dtors.rs
+++ b/src/test/run-pass-valgrind/down-with-thread-dtors.rs
@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // no-prefer-dynamic
+// ignore-emscripten
 
 thread_local!(static FOO: Foo = Foo);
 thread_local!(static BAR: Bar = Bar(1));
diff --git a/src/test/run-pass-valgrind/exit-flushes.rs b/src/test/run-pass-valgrind/exit-flushes.rs
index 1897b921401..b72d2659967 100644
--- a/src/test/run-pass-valgrind/exit-flushes.rs
+++ b/src/test/run-pass-valgrind/exit-flushes.rs
@@ -11,6 +11,7 @@
 // no-prefer-dynamic
 // ignore-macos this needs valgrind 3.11 or higher; see
 // https://github.com/rust-lang/rust/pull/30365#issuecomment-165763679
+// ignore-emscripten
 
 use std::env;
 use std::process::{exit, Command};
diff --git a/src/test/run-pass/i128-ffi.rs b/src/test/run-pass/i128-ffi.rs
index 3b5f4884d21..222f32754fb 100644
--- a/src/test/run-pass/i128-ffi.rs
+++ b/src/test/run-pass/i128-ffi.rs
@@ -20,6 +20,8 @@
 // Ignore 32 bit targets:
 // ignore-x86, ignore-arm
 
+// ignore-emscripten
+
 #![feature(i128_type)]
 
 #[link(name = "rust_test_helpers", kind = "static")]
diff --git a/src/test/run-pass/i128.rs b/src/test/run-pass/i128.rs
index a4ff36d20e4..3eb1c950502 100644
--- a/src/test/run-pass/i128.rs
+++ b/src/test/run-pass/i128.rs
@@ -10,6 +10,9 @@
 
 // ignore-stage0
 // ignore-stage1
+
+// ignore-emscripten
+
 #![feature(i128_type, test)]
 
 extern crate test;
diff --git a/src/test/run-pass/stdio-is-blocking.rs b/src/test/run-pass/stdio-is-blocking.rs
index 74170ca6506..448bb7de772 100644
--- a/src/test/run-pass/stdio-is-blocking.rs
+++ b/src/test/run-pass/stdio-is-blocking.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-emscripten
+
 use std::env;
 use std::io::prelude::*;
 use std::process::Command;
diff --git a/src/test/run-pass/try-wait.rs b/src/test/run-pass/try-wait.rs
index fdaf0cfd5b0..d9826373cce 100644
--- a/src/test/run-pass/try-wait.rs
+++ b/src/test/run-pass/try-wait.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-emscripten
+
 #![feature(process_try_wait)]
 
 use std::env;
diff --git a/src/test/run-pass/u128.rs b/src/test/run-pass/u128.rs
index 53d726f1f66..139d42e3a35 100644
--- a/src/test/run-pass/u128.rs
+++ b/src/test/run-pass/u128.rs
@@ -10,6 +10,9 @@
 
 // ignore-stage0
 // ignore-stage1
+
+// ignore-emscripten
+
 #![feature(i128_type, test)]
 
 extern crate test;