Disallow --initialize-at-build-time without arguments

Author: Christian Wimmer

substratevm/CHANGELOG.md

@@ -5,6 +5,7 @@ This changelog summarizes major changes to GraalVM Native Image.
 ## Version 23.0.0
 * (GR-40187) Report invalid use of SVM specific classes on image class- or module-path as error. As a temporary workaround, -H:+TolerateBuilderClassesOnImageClasspath allows turning the error into a warning.
 * (GR-41196) Provide `.debug.svm.imagebuild.*` sections that contain build options and properties used in the build of the image.
+* (GR-41978) Disallow `--initialize-at-build-time` without arguments. As a temporary workaround, `-H:+TolerateInitializeAllClassesAtBuildTime` allows turning this error into a warning.
 
 ## Version 22.3.0
 * (GR-35721) Remove old build output style and the `-H:±BuildOutputUseNewStyle` option.

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/classinitialization/ClassInitializationOptions.java

@@ -91,6 +91,9 @@ private static class InitializationValueEager extends InitializationValueTransfo
     @Option(help = "A comma-separated list of classes appended with their initialization strategy (':build_time', ':rerun', or ':run_time')", type = OptionType.User)//
     public static final HostedOptionKey<LocatableMultiOptionValue.Strings> ClassInitialization = new HostedOptionKey<>(new LocatableMultiOptionValue.Strings());
 
+    @Option(help = "Instead of abort, only warn if --initialize-at-build-time= is used.", type = OptionType.Debug)//
+    public static final HostedOptionKey<Boolean> TolerateInitializeAllClassesAtBuildTime = new HostedOptionKey<>(false);
+
     @Option(help = "Prints class initialization info for all classes detected by analysis.", type = OptionType.Debug)//
     public static final HostedOptionKey<Boolean> PrintClassInitialization = new HostedOptionKey<>(false);
 

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/classinitialization/InitKind.java

@@ -24,15 +24,15 @@
  */
 package com.oracle.svm.hosted.classinitialization;
 
-import static com.oracle.svm.hosted.NativeImageOptions.DiagnosticsMode;
-
 import java.util.Arrays;
 import java.util.Optional;
 import java.util.function.Consumer;
 
 import org.graalvm.collections.Pair;
 
 import com.oracle.svm.core.option.OptionOrigin;
+import com.oracle.svm.core.option.SubstrateOptionsParser;
+import com.oracle.svm.core.util.UserError;
 
 /**
  * The initialization kind for a class. The order of the enum values matters, {@link #max} depends
@@ -71,12 +71,17 @@ Consumer<String> stringConsumer(ClassInitializationSupport support, OptionOrigin
             return name -> support.rerunInitialization(name, reason(origin, name));
         } else {
             return name -> {
-                if (name.equals("") && !DiagnosticsMode.getValue()) {
-                    System.err.println(
-                                    "--initialize-at-build-time without arguments has been deprecated when not using --diagnostics-mode. With GraalVM 22.0.0" +
-                                                    " --initialize-at-build-time will only work with --diagnostics-mode for debugging purposes.\n" +
-                                                    "The reason for deprecation is that --initalize-at-build-time does not compose, i.e., a single library can make assumptions that the whole classpath can be safely initialized at build time;" +
-                                                    " that assumption is often incorrect.");
+                if (name.equals("") && !origin.commandLineLike()) {
+                    String msg = "--initialize-at-build-time without arguments is not allowed." + System.lineSeparator() +
+                                    "Origin of the option: " + origin + System.lineSeparator() +
+                                    "The reason for deprecation is that --initalize-at-build-time does not compose, i.e., a single library can make assumptions that the whole classpath can be safely initialized at build time;" +
+                                    " that assumption is often incorrect.";
+                    if (ClassInitializationOptions.TolerateInitializeAllClassesAtBuildTime.getValue()) {
+                        System.out.println("Warning: " + msg);
+                    } else {
+                        throw UserError.abort("%s%nAs a temporary workaround, %s allows turning this error into a warning.", msg,
+                                        SubstrateOptionsParser.commandArgument(ClassInitializationOptions.TolerateInitializeAllClassesAtBuildTime, "+"));
+                    }
                 }
                 support.initializeAtBuildTime(name, reason(origin, name));
             };