Closed
Description
Describe the Issue
GraalVM for JDK 24 ignores manifest entry Enable-Native-Access when compiling to native image, resulting in warnings. According to JEP 472:
You can add
Enable-Native-Access: ALL-UNNAMEDto the manifest of an executable JAR file, i.e., a JAR file that is launched via java -jar. (The only supported value for the Enable-Native-Access manifest entry isALL-UNNAMED; other values cause an exception to be thrown.)
I would expect native-image to detect this entry and not throw warnings.
Using the latest version of GraalVM can resolve many issues.
- I tried with the latest version of GraalVM.
GraalVM Version
native-image 24 2025-03-18
GraalVM Runtime Environment GraalVM CE 24-dev+21.1 (build 24+21-jvmci-b01)
Substrate VM GraalVM CE 24-dev+21.1 (build 24+21, serial gc)
Operating System and Version
Linux fedora 6.11.5-300.fc41.x86_64
Build Command
$JAVA_HOME/bin/native-image --initialize-at-build-time=. -jar target/reproducer-1.0-SNAPSHOT.jar
Expected Behavior
Native build should build without any warnings.
Actual Behavior
Native build prints warnings:
WARNING: A restricted method in java.lang.System has been called
WARNING: java.lang.System::loadLibrary has been called by com.aayushatharva.brotli4j.Brotli4jLoader in an unnamed module (file:/home/zakkak/code/issue-reproducers/target/reproducer-1.0-SNAPSHOT.jar)
WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
WARNING: Restricted methods will be blocked in a future release unless native access is enabled
Steps to Reproduce
cd /tmp
git clone --branch 2024-11-01-jep472-manifest-ignored https://github.com/zakkak/issue-reproducers reproducers
cd reproducers
mvn package
# run in JVM (with no warnings)
$JAVA_HOME/bin/java \
-jar target/reproducer-1.0-SNAPSHOT.jar
# generate native-image
$JAVA_HOME/bin/native-image \
--no-fallback \
--initialize-at-build-time=. \
-jar target/reproducer-1.0-SNAPSHOT.jar
# Build prints warning about native access
Additional Context
No response
Build Log Output and Error Messages
Build Log:
========================================================================================================================
GraalVM Native Image: Generating 'reproducer-1.0-SNAPSHOT' (executable)...
========================================================================================================================
[1/8] Initializing... (1.5s @ 0.14GB)
Java version: 24+21, vendor version: GraalVM CE 24-dev+21.1
Graal compiler: optimization level: 2, target machine: x86-64-v3
C compiler: gcc (redhat, x86_64, 14.2.1)
Garbage collector: Serial GC (max heap size: 80% of RAM)
1 user-specific feature(s):
- com.oracle.svm.thirdparty.gson.GsonFeature
------------------------------------------------------------------------------------------------------------------------
Build resources:
- 26.49GB of memory (42.8% of 61.93GB system memory, determined at start)
- 32 thread(s) (100.0% of 32 available processor(s), determined at start)
[2/8] Performing analysis... [WARNING: A restricted method in java.lang.System has been called
WARNING: java.lang.System::loadLibrary has been called by com.aayushatharva.brotli4j.Brotli4jLoader in an unnamed module (file:/home/zakkak/code/issue-reproducers/target/reproducer-1.0-SNAPSHOT.jar)
WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
WARNING: Restricted methods will be blocked in a future release unless native access is enabled
****] (2.1s @ 0.45GB)
3,342 reachable types (70.1% of 4,765 total)
3,836 reachable fields (42.9% of 8,952 total)
15,604 reachable methods (44.1% of 35,401 total)
1,034 types, 7 fields, and 140 methods registered for reflection
57 types, 58 fields, and 52 methods registered for JNI access
4 native libraries: dl, pthread, rt, z
[3/8] Building universe... (0.6s @ 0.45GB)
[4/8] Parsing methods... [*] (0.4s @ 0.47GB)
[5/8] Inlining methods... [***] (0.2s @ 0.41GB)
[6/8] Compiling methods... [**] (2.5s @ 0.43GB)
[7/8] Laying out methods... [*] (0.7s @ 0.50GB)
[8/8] Creating image... [*] (0.7s @ 0.55GB)
5.24MB (38.34%) for code area: 8,925 compilation units
7.25MB (53.00%) for image heap: 95,542 objects and 55 resources
1.19MB ( 8.67%) for other data
13.68MB in total
------------------------------------------------------------------------------------------------------------------------
Top 10 origins of code area: Top 10 object types in image heap:
3.91MB java.base 1.39MB byte[] for code metadata
960.09kB svm.jar (Native Image) 1.28MB byte[] for java.lang.String
112.12kB java.logging 937.41kB java.lang.String
75.44kB org.graalvm.nativeimage.base 794.47kB java.lang.Class
48.63kB jdk.proxy2 287.20kB com.oracle.svm.core.hub.DynamicHubCompanion
38.81kB jdk.proxy1 275.33kB byte[] for general heap data
26.34kB jdk.internal.vm.ci 261.28kB java.util.HashMap$Node
20.08kB org.graalvm.collections 208.43kB java.lang.Object[]
11.92kB jdk.proxy3 186.57kB java.lang.String[]
9.29kB jdk.graal.compiler 154.36kB byte[] for embedded resources
2.31kB for 4 more packages 1.55MB for 953 more object types
------------------------------------------------------------------------------------------------------------------------
Recommendations:
HEAP: Set max heap for improved and more predictable memory usage.
CPU: Enable more CPU features with '-march=native' for improved performance.
------------------------------------------------------------------------------------------------------------------------
0.4s (4.3% of total time) in 99 GCs | Peak RSS: 1.19GB | CPU load: 18.62
------------------------------------------------------------------------------------------------------------------------
Build artifacts:
/home/zakkak/code/issue-reproducers/reproducer-1.0-SNAPSHOT (executable)
========================================================================================================================
Finished generating 'reproducer-1.0-SNAPSHOT' in 9.2s.