[emscripten] Ignore tests

Most of these rely on spawning processes, which is not possible in
Emscripten.

Based on rust-lang#31623

Author: badboy

src/test/run-pass-fulldeps/linkage-visibility.rs

@@ -12,6 +12,7 @@
 // ignore-android: FIXME(#10356)
 // ignore-windows: std::dynamic_lib does not work on Windows well
 // ignore-musl
+// ignore-emscripten no dynamic linking
 
 extern crate linkage_visibility as foo;
 

src/test/run-pass-fulldeps/logging-enabled.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // exec-env:RUST_LOG=logging_enabled=info
+// ignore-emscripten: FIXME(#31622)
 
 
 #![feature(rustc_private)]

src/test/run-pass-fulldeps/logging-separate-lines.rs

@@ -11,6 +11,7 @@
 // ignore-windows
 // exec-env:RUST_LOG=debug
 // compile-flags:-C debug-assertions=y
+// ignore-emscripten: FIXME(#31622)
 
 #![feature(rustc_private)]
 

src/test/run-pass/backtrace-debuginfo.rs

@@ -17,6 +17,7 @@
 
 // compile-flags:-g -Cllvm-args=-enable-tail-merge=0
 // ignore-pretty as this critically relies on line numbers
+// ignore-emscripten spawning processes is not supported
 
 use std::io;
 use std::io::prelude::*;

src/test/run-pass/backtrace.rs

@@ -10,6 +10,7 @@
 
 // no-pretty-expanded FIXME #15189
 // ignore-android FIXME #17520
+// ignore-emscripten spawning processes is not supported
 // compile-flags:-g
 
 use std::env;

src/test/run-pass/command-before-exec.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // ignore-windows - this is a unix-specific test
+// ignore-emscripten
 
 #![feature(process_exec, libc)]
 

src/test/run-pass/command-exec.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // ignore-windows - this is a unix-specific test
+// ignore-emscripten
 // ignore-pretty
 
 #![feature(process_exec)]

src/test/run-pass/drop-flag-sanity-check.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // compile-flags: -Z force-dropflag-checks=on
+// ignore-emscripten
 
 // Quick-and-dirty test to ensure -Z force-dropflag-checks=on works as
 // expected. Note that the inlined drop-flag is slated for removal

src/test/run-pass/drop-trait-enum.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-emscripten no threads support
+
 #![allow(unknown_features)]
 #![feature(box_syntax)]
 

src/test/run-pass/env-home-dir.rs

@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-emscripten
 
 #![feature(path)]