auto merge of #6081 : brson/rust/out-of-stack, r=thestinger

People hit the recursion depth limit too often, it's not possible
to unwind reliably from out-of-stack.

Issues #3555, #3695

src/rt/rust_env.cpp

@@ -97,7 +97,7 @@ get_max_stk_size() {
         return strtol(maxsz, NULL, 0);
     }
     else {
-        return 1024*1024*8;
+        return 1024*1024*1024;
     }
 }
 

src/rt/rust_task.cpp

@@ -530,11 +530,11 @@ rust_task::new_stack(size_t requested_sz) {
     // arbitrarily selected as 2x the maximum stack size.
     if (!unwinding && used_stack > max_stack) {
         LOG_ERR(this, task, "task %" PRIxPTR " ran out of stack", this);
-        fail();
+        abort();
     } else if (unwinding && used_stack > max_stack * 2) {
         LOG_ERR(this, task,
                 "task %" PRIxPTR " ran out of stack during unwinding", this);
-        fail();
+        abort();
     }
 
     size_t sz = rust_stk_sz + RED_ZONE_SIZE;

src/test/run-fail/issue-2144.rs

@@ -1,19 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// error-pattern:ran out of stack
-
-// Don't leak when the landing pads need to request more stack
-// than is allowed during normal execution
-
-fn useBlock(f: ~fn() -> uint) { useBlock(|| 22u ) }
-fn main() {
-    useBlock(|| 22u );
-}

src/test/run-fail/out-of-stack-managed-box.rs

@@ -1,25 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// xfail-test iloops with optimizations on
-
-// NB: Not sure why this works. I expect the box argument to leak when
-// we run out of stack. Maybe the box annihilator works it out?
-
-// error-pattern:ran out of stack
-fn main() {
-    eat(@0);
-}
-
-fn eat(
-    +a: @int
-) {
-    eat(a)
-}

src/test/run-fail/out-of-stack-owned-box.rs

@@ -1,21 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// xfail-test
-// error-pattern:ran out of stack
-fn main() {
-    eat(~0);
-}
-
-fn eat(
-    +a: ~int
-) {
-    eat(a)
-}

src/test/run-fail/too-much-recursion.rs

@@ -1,18 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// error-pattern:ran out of stack
-
-// Test that the task fails after hiting the recursion limit
-
-fn main() {
-    debug!(~"don't optimize me out");
-    main();
-}