ere-risc0: allocator alignments test (#120)

Signed-off-by: Ignacio Hagopian <jsign.uy@gmail.com>

tests/risc0/allocs_alignment/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "ere-test-risc0-allocs-alignment"
+version = "0.1.0"
+edition = "2021"
+
+[workspace]
+
+[dependencies]
+risc0-zkvm = { version = "3.0.1", default-features = false, features = [
+    "std",
+    "unstable",
+] }
+risc0-zkvm-platform = { version = "=2.0.4" }

tests/risc0/allocs_alignment/src/main.rs

@@ -0,0 +1,11 @@
+use risc0_zkvm::guest::env;
+
+fn main() {
+    let alignment = env::read::<usize>();
+
+    let layout = std::alloc::Layout::from_size_align(1, alignment).unwrap();
+    let ptr = unsafe { std::alloc::alloc(layout) };
+    if ptr.is_null() {
+        panic!("allocation failed");
+    }
+}