Emit distinctive GC assert messages on iOS simulator

[shai-almog]

Motivation

• Make GC assertion failures easier to identify in unsymbolicated iOS simulator crash reports by emitting distinctive assertion messages.
• Preserve the defensive, non-crashing behavior on physical devices by keeping log-and-skip semantics there.

Description

• Add the CN1_GC_ASSERT helper macro that on TARGET_OS_SIMULATOR calls __assert_rtn with a custom message, on device becomes a no-op (arguments consumed), and on non-Apple builds falls back to CODENAME_ONE_ASSERT.
• Replace the previous CODENAME_ONE_ASSERT checks in codenameOneGCMark (stack entry validation) and codenameOneGCSweep (object GC mark check) with CN1_GC_ASSERT and add device-side NSLog+continue handling where appropriate.
• Use distinct identifiers for each assertion to aid post-mortem analysis: "CN1_GC_STACK_ENTRY_TYPE" for stack-entry validation and "CN1_GC_INVALID_MARK" for invalid GC marks.

Testing

• No automated tests were run for this change.

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Codex Task

[github-actions]

✅ ByteCodeTranslator Quality Report

Test & Coverage

• ✅ Tests: 171 total, 0 failed, 2 skipped

Benchmark Results

• Execution Time: 9657 ms

• Hotspots (Top 20 sampled methods):

  • 23.51% java.lang.String.indexOf (401 samples)
  • 17.41% com.codename1.tools.translator.Parser.isMethodUsed (297 samples)
  • 14.24% com.codename1.tools.translator.Parser.addToConstantPool (243 samples)
  • 10.08% java.util.ArrayList.indexOf (172 samples)
  • 4.22% java.lang.Object.hashCode (72 samples)
  • 3.46% com.codename1.tools.translator.ByteCodeClass.calcUsedByNative (59 samples)
  • 2.81% com.codename1.tools.translator.ByteCodeClass.fillVirtualMethodTable (48 samples)
  • 2.58% java.lang.System.identityHashCode (44 samples)
  • 1.23% java.lang.StringBuilder.append (21 samples)
  • 1.11% com.codename1.tools.translator.Parser.cullMethods (19 samples)
  • 1.11% com.codename1.tools.translator.BytecodeMethod.optimize (19 samples)
  • 1.11% com.codename1.tools.translator.Parser.generateClassAndMethodIndexHeader (19 samples)
  • 0.94% java.io.FileOutputStream.writeBytes (16 samples)
  • 0.82% java.io.FileOutputStream.open0 (14 samples)
  • 0.82% com.codename1.tools.translator.ByteCodeClass.markDependent (14 samples)
  • 0.76% java.lang.StringCoding$StringEncoder.encode (13 samples)
  • 0.64% com.codename1.tools.translator.BytecodeMethod.equals (11 samples)
  • 0.64% com.codename1.tools.translator.ByteCodeClass.isDefaultInterfaceMethod (11 samples)
  • 0.59% java.io.FileInputStream.open0 (10 samples)
  • 0.53% java.util.ArrayList$Itr.next (9 samples)

• ⚠️ Coverage report not generated.

Static Analysis

• ✅ SpotBugs: no findings (report was not generated by the build).
• ⚠️ PMD report not generated.
• ⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

[github-actions]

✅ Continuous Quality Report

Test & Coverage

• ✅ Tests: 2282 total, 0 failed, 0 skipped
• 📊 Line coverage: 52.81% [HTML preview] [Download]
  • Lowest covered classes
    • com.codename1.io.rest.RequestBuilder$FetchAsPropertyListActionListener – 0.00%
    • com.codename1.io.rest.RequestBuilder$FetchAsPropertiesActionListener – 0.00%
    • com.codename1.ui.Display$EdtException – 0.00%
    • com.codename1.ui.BrowserWindow$BrowserForm – 0.00%
    • com.codename1.ui.plaf.CSSBorder$LinearGradient – 0.00%
    • com.codename1.io.rest.RequestBuilder$GetAsStringAsyncImplActionListener – 0.00%
    • com.codename1.io.rest.RequestBuilder$GetAsJsonMapActionListener – 0.00%
    • com.codename1.payment.Purchase$SynchronizeReceiptsSyncRunnable – 0.00%
    • com.codename1.io.rest.RequestBuilder$GetAsBytesAsyncImplActionListener – 0.00%
    • com.codename1.io.rest.RequestBuilder$FetchAsJsonMapActionListener – 0.00%

Static Analysis

• ✅ SpotBugs: 0 findings (no issues) [Report archive]
• ❌ PMD: 6369 findings (P1: 186, P2: 42, P3: 5839, P4: 302) [HTML preview] [Download]
  • Top findings
    • P1: CodenameOne/src/com/codename1/components/FileEncodedImage.java:123 – Return an empty collection rather than null. (rule: ReturnEmptyCollectionRatherThanNull)
    • P1: CodenameOne/src/com/codename1/components/FileEncodedImageAsync.java:160 – Return an empty collection rather than null. (rule: ReturnEmptyCollectionRatherThanNull)
    • P1: CodenameOne/src/com/codename1/components/StorageImageAsync.java:95 – Return an empty collection rather than null. (rule: ReturnEmptyCollectionRatherThanNull)
    • P1: CodenameOne/src/com/codename1/components/StorageImageAsync.java:119 – Return an empty collection rather than null. (rule: ReturnEmptyCollectionRatherThanNull)
    • P1: CodenameOne/src/com/codename1/components/Switch.java:868 – The local variable name 'anim_duration' doesn't match '[a-z][a-zA-Z0-9]*' (rule: LocalVariableNamingConventions)
    • …and 6364 more
• ❌ Checkstyle: 220834 findings (Warning: 220834) [HTML preview] [Download]
  • Top findings
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:30:1 – Extra separation in import group before 'java.io.IOException' (rule: CustomImportOrderCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:32 – First sentence of Javadoc is missing an ending period. (rule: SummaryJavadocCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:36 – Line is longer than 100 characters (found 143). (rule: LineLengthCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:39:5 – 'member def modifier' has incorrect indentation level 4, expected level should be 2. (rule: IndentationCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:40:5 – 'member def modifier' has incorrect indentation level 4, expected level should be 2. (rule: IndentationCheck)
    • …and 220829 more

Generated automatically by the PR CI workflow.

[shai-almog]

iOS screenshot updates

Compared 29 screenshots: 22 matched, 6 updated, 1 missing reference.

• BrowserComponent — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

  
  Preview info: Preview provided by instrumentation.
  Full-resolution PNG saved as BrowserComponent.png in workflow artifacts.

• graphics-draw-arc — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

  
  Preview info: JPEG preview quality 20; JPEG preview quality 20; downscaled to 603x1311.
  Full-resolution PNG saved as graphics-draw-arc.png in workflow artifacts.

• graphics-draw-gradient — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

  
  Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 844x1835.
  Full-resolution PNG saved as graphics-draw-gradient.png in workflow artifacts.

• graphics-draw-round-rect — missing reference. Reference screenshot missing at /Users/runner/work/CodenameOne/CodenameOne/scripts/ios/screenshots/graphics-draw-round-rect.png.

  
  Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 844x1835.
  Full-resolution PNG saved as graphics-draw-round-rect.png in workflow artifacts.

• graphics-draw-string — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

  
  Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 422x918.
  Full-resolution PNG saved as graphics-draw-string.png in workflow artifacts.

• graphics-draw-string-decorated — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

  
  Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 603x1311.
  Full-resolution PNG saved as graphics-draw-string-decorated.png in workflow artifacts.

• kotlin — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

  
  Preview info: Preview provided by instrumentation.
  Full-resolution PNG saved as kotlin.png in workflow artifacts.

Benchmark Results

• VM Translation Time: 295 seconds
• Compilation Time: 72 seconds

Detailed Performance Metrics

Metric	Duration
Build Time Statistics
Setup & Unzip	24971 ms
Extract Extensions	21 ms
Google Services Setup	1 ms
Scan Classes	396 ms
Extract Libs	822 ms
Inject Build Hints	36 ms
Generate Unit Tests	5 ms
Generate Stubs	923 ms
Compile Stubs	1896 ms
Generate Icons	794 ms
Prepare ParparVM	116 ms
ParparVM Execution	176031 ms
Post-VM Setup	100 ms
CocoaPods	4087 ms
Finalize	16 ms
Total Time	210216 msMaven Overhead : 85000 ms
CocoaPods Install (Script)	1000 ms
Simulator Boot (Run)	44000 ms
App Install	11000 ms
App Launch	5000 ms
Test Execution	134000 ms