Remove #[fixed_stack_segment] and #[rust_stack]

These two attributes are no longer useful now that Rust has decided to leave
segmented stacks behind. It is assumed that the rust task's stack is always
large enough to make an FFI call (due to the stack being very large).

There's always the case of stack overflow, however, to consider. This does not
change the behavior of stack overflow in Rust. This is still normally triggered
by the __morestack function and aborts the whole process.

C stack overflow will continue to corrupt the stack, however (as it did before
this commit as well). The future improvement of a guard page at the end of every
rust stack is still unimplemented and is intended to be the mechanism through
which we attempt to detect C stack overflow.

Closes #8822
Closes #10155

8 files changed, 0 insertions, 12 deletions

diff --git a/src/test/bench/core-map.rs b/src/test/bench/core-map.rs
index f91327b6a65..37efa5768af 100644
--- a/src/test/bench/core-map.rs
+++ b/src/test/bench/core-map.rs
@@ -91,7 +91,6 @@ fn vector<M: MutableMap<uint, uint>>(map: &mut M, n_keys: uint, dist: &[uint]) {
     }
 }
 
-#[fixed_stack_segment]
 fn main() {
     let args = os::args();
     let n_keys = {
diff --git a/src/test/bench/shootout-fannkuch-redux.rs b/src/test/bench/shootout-fannkuch-redux.rs
index f93ce2e93b9..079ec7c50bb 100644
--- a/src/test/bench/shootout-fannkuch-redux.rs
+++ b/src/test/bench/shootout-fannkuch-redux.rs
@@ -91,7 +91,6 @@ fn fannkuch_redux(n: i32) -> i32 {
     }
 }
 
-#[fixed_stack_segment]
 fn main() {
     let n: i32 = FromStr::from_str(os::args()[1]).unwrap();
     println!("Pfannkuchen({}) = {}", n as int, fannkuch_redux(n) as int);
diff --git a/src/test/bench/shootout-fasta-redux.rs b/src/test/bench/shootout-fasta-redux.rs
index 1f1ce86404b..11274905a4e 100644
--- a/src/test/bench/shootout-fasta-redux.rs
+++ b/src/test/bench/shootout-fasta-redux.rs
@@ -184,7 +184,6 @@ impl RandomFasta {
     }
 }
 
-#[fixed_stack_segment]
 fn main() {
     let n: uint = FromStr::from_str(os::args()[1]).unwrap();
 
diff --git a/src/test/bench/shootout-k-nucleotide.rs b/src/test/bench/shootout-k-nucleotide.rs
index 5c2176e30ff..f2ba0d40ebc 100644
--- a/src/test/bench/shootout-k-nucleotide.rs
+++ b/src/test/bench/shootout-k-nucleotide.rs
@@ -243,8 +243,6 @@ fn read_stdin() -> ~[u8] {
     }
 }
 
-#[inline(never)]
-#[fixed_stack_segment]
 fn generate_frequencies(frequencies: &mut Table,
                         mut input: &[u8],
                         frame: i32) {
@@ -264,8 +262,6 @@ fn generate_frequencies(frequencies: &mut Table,
     }
 }
 
-#[inline(never)]
-#[fixed_stack_segment]
 fn print_frequencies(frequencies: &Table, frame: i32) {
     let mut vector = ~[];
     for frequencies.each |entry| {
@@ -289,7 +285,6 @@ fn print_occurrences(frequencies: &mut Table, occurrence: &'static str) {
     frequencies.lookup(Code::pack(occurrence), PrintCallback(occurrence))
 }
 
-#[fixed_stack_segment]
 fn main() {
     let input = read_stdin();
 
diff --git a/src/test/bench/shootout-mandelbrot.rs b/src/test/bench/shootout-mandelbrot.rs
index 83ffa058b32..6af0e04a8dd 100644
--- a/src/test/bench/shootout-mandelbrot.rs
+++ b/src/test/bench/shootout-mandelbrot.rs
@@ -8,7 +8,6 @@ use std::os;
 static ITER: uint = 50;
 static LIMIT: f64 = 2.0;
 
-#[fixed_stack_segment]
 fn main() {
     unsafe {
         let w: i32 = FromStr::from_str(os::args()[1]).unwrap();
diff --git a/src/test/bench/shootout-pidigits.rs b/src/test/bench/shootout-pidigits.rs
index d56fb98cab0..355adc39c71 100644
--- a/src/test/bench/shootout-pidigits.rs
+++ b/src/test/bench/shootout-pidigits.rs
@@ -161,7 +161,6 @@ fn pidigits(n: u32) {
     }
 }
 
-#[fixed_stack_segment]
 fn main() {
     let n: u32 = FromStr::from_str(os::args()[1]).get();
     pidigits(n);
diff --git a/src/test/bench/shootout-reverse-complement.rs b/src/test/bench/shootout-reverse-complement.rs
index d7a7fe00185..d0e13865347 100644
--- a/src/test/bench/shootout-reverse-complement.rs
+++ b/src/test/bench/shootout-reverse-complement.rs
@@ -90,7 +90,6 @@ static COMPLEMENTS: [u8, ..256] = [
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 ];
 
-#[fixed_stack_segment]
 fn main() {
     unsafe {
         let mode = "r";
diff --git a/src/test/bench/shootout-spectralnorm.rs b/src/test/bench/shootout-spectralnorm.rs
index 105972591f3..6a9837fb832 100644
--- a/src/test/bench/shootout-spectralnorm.rs
+++ b/src/test/bench/shootout-spectralnorm.rs
@@ -52,7 +52,6 @@ fn mult_AtAv(v: &mut [f64], out: &mut [f64], tmp: &mut [f64]) {
     mult_Atv(tmp, out);
 }
 
-#[fixed_stack_segment]
 fn main() {
     let n: uint = FromStr::from_str(os::args()[1]).unwrap();
     let mut u = vec::from_elem(n, 1f64);