Run tests on release builds

Run tests on release builds to catch issues such as #447 early on.

Signed-off-by: Daniel Müller <[email protected]>

Author: d-e-s-o

.github/workflows/test.yml

@@ -8,11 +8,16 @@ on:
 
 jobs:
   build:
+    name: Test [${{ matrix.rust }}, ${{ matrix.profile }}]
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         rust: [stable, nightly]
+        profile: [dev]
+        include:
+          - rust: stable
+            profile: release
     steps:
     - name: "Set environmental variables"
       shell: bash
@@ -50,12 +55,12 @@ jobs:
         sudo rm -f /bin/clang && sudo ln -s /usr/bin/clang-14 /bin/clang
     - uses: Swatinem/[email protected]
     - name: Build
-      run: cargo build --locked --verbose --workspace --exclude runqslower
+      run: cargo build --profile=${{ matrix.profile }} --locked --verbose --workspace --exclude runqslower
     - name: Run tests
       # Skip BTF & map tests which require sudo
-      run: cargo test --locked --verbose --workspace --exclude runqslower -- --skip test_object --skip test_tc --skip test_map_info --include-ignored
+      run: cargo test --profile=${{ matrix.profile }} --locked --verbose --workspace --exclude runqslower -- --skip test_object --skip test_tc --skip test_map_info --include-ignored
     - name: Run BTF tests
-      run: cd libbpf-rs && cargo test --locked --verbose -- test_object test_tc
+      run: cd libbpf-rs && cargo test --profile=${{ matrix.profile }} --locked --verbose -- test_object test_tc
 
   build-minimum:
     name: Build using minimum versions of dependencies

libbpf-rs/tests/test.rs

@@ -1,6 +1,7 @@
 use std::collections::HashSet;
 use std::ffi::c_void;
 use std::fs;
+use std::hint;
 use std::io::Read;
 use std::path::Path;
 use std::path::PathBuf;
@@ -1102,7 +1103,8 @@ fn test_object_tracepoint_with_opts() {
 #[inline(never)]
 #[no_mangle]
 extern "C" fn uprobe_target() -> usize {
-    42
+    // Use `black_box` here as an additional barrier to inlining.
+    hint::black_box(42)
 }
 
 /// Check that we can attach a BPF program to a uprobe.