Claude Code and M3 Chip Experiment

.ccache/ccache.conf

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+# ccache configuration for Io builds
+# Optimized for Apple Silicon Macs
+
+# Set cache size (2GB should be plenty for Io)
+max_size = 2G
+
+# Enable compression for smaller cache
+compression = true
+compression_level = 6
+
+# Use hard links when possible (faster on same filesystem)
+hard_link = true
+
+# Keep statistics
+stats = true
+
+# Sloppiness settings for faster builds
+sloppiness = file_macro,time_macros,include_file_mtime,include_file_ctime
+
+# Hash the compiler version
+compiler_check = %compiler% -v
+
+# Cache preprocessing step
+direct_mode = true
+
+# Use base directory for relative paths
+base_dir = /Users/david/vcs/git/github/davidcanhelp/io

BUILD_AND_TEST.sh

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+#!/bin/bash
+# Complete build and test script for Io language
+
+echo "=== Io Language Build Script ==="
+echo "This script will build and test the Io language with our bug fixes"
+echo ""
+
+# Navigate to the Io directory
+IO_DIR="/Users/david/vcs/git/github/davidcanhelp/io"
+cd "$IO_DIR" || exit 1
+
+# Clean up the nested build directories
+echo "1. Cleaning up nested build directories..."
+rm -rf build/build
+
+# Check if we have a proper build directory
+if [ -d "build" ]; then
+    echo "   Build directory exists at: $IO_DIR/build"
+    cd build
+else
+    echo "   Creating new build directory..."
+    mkdir build
+    cd build
+fi
+
+echo ""
+echo "2. Configuring with CMake..."
+if [ -f "CMakeCache.txt" ]; then
+    echo "   CMake cache found, using existing configuration"
+else
+    cmake .. || { echo "CMake configuration failed"; exit 1; }
+fi
+
+echo ""
+echo "3. Building Io..."
+echo "   Using make to build the project..."
+
+# Try to build using make
+if command -v make &> /dev/null; then
+    make -j4 || make || { echo "Build failed with make"; }
+fi
+
+# If make didn't work, try cmake --build
+if [ ! -f "_build/binaries/io" ]; then
+    echo "   Trying cmake --build..."
+    cmake --build . --parallel 4 || cmake --build .
+fi
+
+echo ""
+echo "4. Checking build results..."
+if [ -f "_build/binaries/io" ]; then
+    echo "   ✅ Io binary successfully built!"
+    echo "   Location: $PWD/_build/binaries/io"
+
+    echo ""
+    echo "5. Running tests..."
+    echo "   Testing our bug fixes..."
+
+    # Test the Io binary
+    ./_build/binaries/io -e "writeln(\"Hello from Io!\")" 2>/dev/null && echo "   ✅ Basic execution works!"
+
+    # Test if we can run the test suite
+    if [ -f "../libs/iovm/tests/correctness/run.io" ]; then
+        echo "   Running test suite..."
+        ./_build/binaries/io ../libs/iovm/tests/correctness/run.io 2>&1 | head -20
+    fi
+else
+    echo "   ❌ Io binary not found. Build may have failed."
+    echo "   Checking for build artifacts..."
+
+    find . -name "io" -type f 2>/dev/null | head -5
+    find . -name "*.a" -type f 2>/dev/null | head -5
+fi
+
+echo ""
+echo "=== Summary of Changes ==="
+echo "The following bug fixes have been applied:"
+echo "1. IoFile.c - Fixed double evaluation bug in atPut()"
+echo "2. IoDynLib.c - Fixed memory leak for BLOCK types"
+echo "3. IoMessage_parser.c - Added proper error messages"
+echo "4. run.io - Fixed cross-platform path handling"
+echo ""
+echo "Build script complete!"

Makefile.optimized

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+# Optimized Makefile for Io Language on Mac
+# Provides simple commands for common build tasks
+
+.PHONY: all build clean test install help debug release quick bench setup
+
+# Default target
+all: build
+
+# Color output
+RED := \033[0;31m
+GREEN := \033[0;32m
+YELLOW := \033[1;33m
+BLUE := \033[0;34m
+NC := \033[0m
+
+# Detect system
+CORES := $(shell sysctl -n hw.ncpu)
+ARCH := $(shell uname -m)
+
+# Build directories
+BUILD_DIR := build
+BUILD_DEBUG_DIR := build-debug
+BUILD_RELEASE_DIR := build-release
+
+help:
+	@echo "$(BLUE)Io Language Build System$(NC)"
+	@echo ""
+	@echo "$(GREEN)Quick Commands:$(NC)"
+	@echo "  make              - Build Io (optimized for your Mac)"
+	@echo "  make quick        - Fast incremental build"
+	@echo "  make clean        - Clean build from scratch"
+	@echo "  make test         - Run test suite"
+	@echo ""
+	@echo "$(GREEN)Build Variants:$(NC)"
+	@echo "  make debug        - Debug build with symbols"
+	@echo "  make release      - Release build with max optimization"
+	@echo "  make bench        - Benchmark build with profiling"
+	@echo ""
+	@echo "$(GREEN)Installation:$(NC)"
+	@echo "  make install      - Install to /usr/local (requires sudo)"
+	@echo "  make setup        - Install build dependencies via Homebrew"
+	@echo ""
+	@echo "$(YELLOW)System: $(ARCH) with $(CORES) cores$(NC)"
+
+# Standard optimized build
+build:
+	@echo "$(BLUE)Building Io (optimized)...$(NC)"
+	@chmod +x build_optimized.sh
+	@./build_optimized.sh
+
+# Quick incremental build (no reconfigure)
+quick:
+	@echo "$(BLUE)Quick build...$(NC)"
+	@if [ -d "$(BUILD_DIR)" ]; then \
+		cd $(BUILD_DIR) && $(MAKE) -j$(CORES); \
+	else \
+		$(MAKE) build; \
+	fi
+
+# Clean build
+clean:
+	@echo "$(RED)Cleaning all build artifacts...$(NC)"
+	@rm -rf $(BUILD_DIR) $(BUILD_DEBUG_DIR) $(BUILD_RELEASE_DIR)
+	@rm -f io
+	@echo "$(GREEN)✓ Clean complete$(NC)"
+	@$(MAKE) build
+
+# Debug build
+debug:
+	@echo "$(BLUE)Building Io (debug mode)...$(NC)"
+	@mkdir -p $(BUILD_DEBUG_DIR)
+	@cd $(BUILD_DEBUG_DIR) && \
+		cmake -DCMAKE_BUILD_TYPE=Debug \
+			  -DCMAKE_C_FLAGS="-g -O0 -fsanitize=address" \
+			  -DCMAKE_EXE_LINKER_FLAGS="-fsanitize=address" \
+			  .. && \
+		$(MAKE) -j$(CORES)
+	@ln -sf $(BUILD_DEBUG_DIR)/_build/binaries/io io-debug
+	@echo "$(GREEN)✓ Debug build complete: ./io-debug$(NC)"
+
+# Release build with maximum optimization
+release:
+	@echo "$(BLUE)Building Io (release mode)...$(NC)"
+	@mkdir -p $(BUILD_RELEASE_DIR)
+	@cd $(BUILD_RELEASE_DIR) && \
+		cmake -DCMAKE_BUILD_TYPE=Release \
+			  -DCMAKE_C_FLAGS="-O3 -march=native -mtune=native -flto -DNDEBUG" \
+			  -DCMAKE_EXE_LINKER_FLAGS="-flto -Wl,-dead_strip_dylibs" \
+			  .. && \
+		$(MAKE) -j$(CORES)
+	@ln -sf $(BUILD_RELEASE_DIR)/_build/binaries/io io-release
+	@echo "$(GREEN)✓ Release build complete: ./io-release$(NC)"
+
+# Benchmark build
+bench: release
+	@echo "$(BLUE)Building with profiling support...$(NC)"
+	@cd $(BUILD_RELEASE_DIR) && \
+		cmake -DCMAKE_C_FLAGS="-O3 -march=native -pg" \
+			  -DCMAKE_EXE_LINKER_FLAGS="-pg" \
+			  .. && \
+		$(MAKE) -j$(CORES)
+	@echo "$(GREEN)✓ Benchmark build ready$(NC)"
+
+# Run tests
+test: build
+	@echo "$(BLUE)Running Io test suite...$(NC)"
+	@if [ -f "$(BUILD_DIR)/_build/binaries/io" ]; then \
+		$(BUILD_DIR)/_build/binaries/io libs/iovm/tests/correctness/run.io; \
+	else \
+		echo "$(RED)✗ Io not built. Run 'make build' first$(NC)"; \
+	fi
+
+# Install to system
+install: build
+	@echo "$(BLUE)Installing Io...$(NC)"
+	@cd $(BUILD_DIR) && sudo $(MAKE) install
+	@echo "$(GREEN)✓ Io installed to /usr/local$(NC)"
+
+# Setup development environment
+setup:
+	@echo "$(BLUE)Setting up development environment...$(NC)"
+	@command -v brew >/dev/null 2>&1 || { \
+		echo "$(YELLOW)Installing Homebrew...$(NC)"; \
+		/bin/bash -c "$$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"; \
+	}
+	@echo "$(YELLOW)Installing build dependencies...$(NC)"
+	@brew install cmake ninja ccache
+	@echo "$(GREEN)✓ Development environment ready$(NC)"
+
+# Benchmark runner
+benchmark: bench
+	@echo "$(BLUE)Running benchmarks...$(NC)"
+	@$(BUILD_RELEASE_DIR)/_build/binaries/io samples/speed/speed.io
+
+# Create Xcode project
+xcode:
+	@echo "$(BLUE)Generating Xcode project...$(NC)"
+	@mkdir -p build-xcode
+	@cd build-xcode && cmake -G Xcode ..
+	@echo "$(GREEN)✓ Xcode project created in build-xcode/$(NC)"
+	@echo "Open with: open build-xcode/IoLanguage.xcodeproj"
+
+# Development build with compile_commands.json for IDEs
+dev:
+	@echo "$(BLUE)Creating development build with IDE support...$(NC)"
+	@mkdir -p $(BUILD_DIR)
+	@cd $(BUILD_DIR) && \
+		cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
+			  -DCMAKE_BUILD_TYPE=Debug .. && \
+		$(MAKE) -j$(CORES)
+	@ln -sf $(BUILD_DIR)/compile_commands.json compile_commands.json
+	@echo "$(GREEN)✓ Development build ready with compile_commands.json$(NC)"
+
+# Print system info
+info:
+	@echo "$(BLUE)System Information:$(NC)"
+	@echo "  Architecture: $(ARCH)"
+	@echo "  CPU Cores: $(CORES)"
+	@echo "  Compiler: $$(clang --version | head -1)"
+	@echo "  CMake: $$(cmake --version | head -1)"
+	@echo "  macOS: $$(sw_vers -productVersion)"
+
+.DEFAULT_GOAL := help

TESTING_SUMMARY.md

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+# Testing Summary for Io Language Fixes
+
+## Changes Made
+
+### 1. IoFile.c (Line 1006-1007)
+**Fix**: Store position value once to prevent double evaluation
+- **Before**: Position argument could be evaluated twice with side effects
+- **After**: Position is stored in variable `pos` at start of function
+- **Test**: Compile test passed successfully
+
+### 2. IoDynLib.c (Line 264-267) 
+**Fix**: Free memory allocated for BLOCK trampoline code
+- **Before**: Memory leak when marshalling BLOCK types
+- **After**: Added `io_free((void *)n)` in demarshal for BLOCK case
+- **Test**: Compile test passed successfully
+
+### 3. IoMessage_parser.c (Lines 115-116, 227-228, 234-235)
+**Fix**: Added proper error messages with line numbers
+- **Before**: Empty TODO comments for error cases
+- **After**: Implemented descriptive error messages with line numbers
+- **Test**: Compile test passed successfully
+
+### 4. run.io Test Runner (Line 9)
+**Fix**: Use platform-independent path joining
+- **Before**: Hard-coded "/" separator
+- **After**: Uses `Path with()` for cross-platform compatibility
+- **Test**: Syntax is valid Io code
+
+## Compilation Status
+
+Individual file compilation tests:
+- ✅ IoFile.c - Compiles successfully
+- ✅ IoDynLib.c - Compiles successfully  
+- ✅ IoMessage_parser.c - Compiles successfully
+
+## Build Issues
+
+The full project build requires the parson JSON library dependency which was missing from the repository. A stub implementation was created to allow partial compilation testing.
+
+## Recommendations
+
+1. **Get Full Dependencies**: The project needs the actual parson library from https://github.com/kgabis/parson
+2. **Run Full Test Suite**: Once built, run `io libs/iovm/tests/correctness/run.io`
+3. **Memory Testing**: Run with valgrind to verify the memory leak fix in IoDynLib.c
+4. **Cross-Platform Testing**: Test the path fix on Windows to ensure compatibility
+
+## How to Test When Build is Available
+
+```bash
+# Build the project
+mkdir build && cd build
+cmake ..
+make
+
+# Run tests
+./io ../libs/iovm/tests/correctness/run.io
+
+# Test specific file operations
+./io ../test_changes.io
+
+# Memory leak testing (Linux/macOS)
+valgrind --leak-check=full ./io [test_script]
+```
+
+## Code Quality
+
+All changes:
+- Are minimal and focused
+- Maintain backward compatibility
+- Follow existing code style
+- Include appropriate error messages
+- Fix actual bugs (not just cosmetic issues)

build_now.sh

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+#!/bin/bash
+# Direct build script for Io
+
+echo "Starting Io build..."
+cd /Users/david/vcs/git/github/davidcanhelp/io
+
+# Clean up nested directories
+rm -rf build/build/build
+
+# Enter build directory
+if [ -d "build" ]; then
+    cd build
+    echo "Using existing build directory"
+else
+    mkdir build
+    cd build
+    echo "Created new build directory"
+fi
+
+# Configure if needed
+if [ ! -f "Makefile" ]; then
+    echo "Configuring with CMake..."
+    cmake -DCMAKE_BUILD_TYPE=Release \
+          -DCMAKE_C_FLAGS="-O2" \
+          -DCMAKE_OSX_ARCHITECTURES=arm64 \
+          ..
+fi
+
+# Build
+echo "Building with make..."
+make -j8 VERBOSE=1
+
+# Check result
+if [ -f "_build/binaries/io" ]; then
+    echo "✓ Build successful!"
+    echo "Binary at: $(pwd)/_build/binaries/io"
+
+    # Test it
+    echo "Testing binary..."
+    ./_build/binaries/io -e 'writeln("Io is working!")'
+else
+    echo "Build may have failed. Checking for artifacts..."
+    find . -name "io" -type f 2>/dev/null | head -5
+fi