add CBuf to standard library

and fix ability to take address of variables
from other namespaces

1 files changed, 26 insertions, 1 deletions

diff --git a/std/debug.zig b/std/debug.zig
index 1a289b645e..77213b593e 100644
--- a/std/debug.zig
+++ b/std/debug.zig
@@ -1,10 +1,11 @@
+const Allocator = @import("mem.zig").Allocator;
 const io = @import("io.zig");
 
 pub fn assert(b: bool) {
     if (!b) unreachable{}
 }
 
-pub fn print_stack_trace() {
+pub fn printStackTrace() {
     var maybe_fp: ?&const u8 = @frame_address();
     while (true) {
         const fp = maybe_fp ?? break;
@@ -14,3 +15,27 @@ pub fn print_stack_trace() {
         maybe_fp = *(&const ?&const u8)(fp);
     }
 }
+
+pub var global_allocator = Allocator {
+    .alloc_fn = globalAlloc,
+    .realloc_fn = globalRealloc,
+    .free_fn = globalFree,
+    .context = null,
+};
+
+var some_mem: [10 * 1024]u8 = undefined;
+var some_mem_index: usize = 0;
+
+fn globalAlloc(self: &Allocator, n: usize) -> %[]u8 {
+    const result = some_mem[some_mem_index ... some_mem_index + n];
+    some_mem_index += n;
+    return result;
+}
+
+fn globalRealloc(self: &Allocator, old_mem: []u8, new_size: usize) -> %[]u8 {
+    const result = %return globalAlloc(self, new_size);
+    @memcpy(result.ptr, old_mem.ptr, old_mem.len);
+    return result;
+}
+
+fn globalFree(self: &Allocator, old_mem: []u8) { }