From c6605cba8375871a145896f9cf1090e9c823214a Mon Sep 17 00:00:00 2001
From: Josh Wolfe <thejoshwolfe@gmail.com>
Date: Sun, 23 Apr 2017 16:59:55 -0700
Subject: blocks check that their statements are void

closes #291

This changes the error message "return value ignored" to "expression value is ignored".
This is because this error also applies to {1;}, which has no function calls.

Also fix ignored expression values in std and test.
This caught a bug in debug.readAllocBytes where an early Eof error would have been missed.
See #219.
---
 std/debug.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'std/debug.zig')

diff --git a/std/debug.zig b/std/debug.zig
index a37f8749cf..45f7dcf091 100644
--- a/std/debug.zig
+++ b/std/debug.zig
@@ -217,7 +217,7 @@ fn getString(st: &ElfStackTrace, offset: u64) -> %[]u8 {
 fn readAllocBytes(in_stream: &io.InStream, size: usize) -> %[]u8 {
     const buf = %return global_allocator.alloc(u8, size);
     %defer global_allocator.free(buf);
-    %return in_stream.read(buf);
+    if (size < %return in_stream.read(buf)) return error.Eof;
     return buf;
 }
 
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