Enhanced the demo test to cover comprehensive import scenarios:
- Test 1: build.Default context with GOOS/GOARCH validation
- Test 2: Standard library package import (fmt)
- Test 3: Nested standard library package (os/exec)
- Test 4: Internal package import (internal/cpu)
- Test 5: Runtime package with Dir validation
- Test 6: ImportDir with current directory
- Test 7: IsLocalImport with multiple path formats
- Test 8: Context GOPATH/GOROOT validation
- Test 9: Import with AllowBinary flag
- Test 10: Release tags validation
All tests include proper result validation to ensure go/build
patches work correctly across different use cases.
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Enhanced the demo test to cover more go/build functionality:
- build.Import (existing)
- build.ImportDir (new)
- build.IsLocalImport (new)
- build.Default context verification (existing, improved)
This ensures the go/build patches work correctly across different
public functions, not just Import.
Also ran go fmt to fix formatting issues reported by CI.
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- Created zcgo.go with defaultCGO_ENABLED constant (Go 1.24 pattern)
- Updated parseGoVersion to panic on unexpected input instead of fallback
- Added runtime.(*Func).Name stub to symtab.go for Go 1.21/1.22 compatibility
- Removed go1.23 build constraint from demo
- Removed internal/buildcfg package (replaced by zcgo.go)
These changes ensure the demo works across Go 1.21+ versions.
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- Link internal/buildcfg.ToolTags variable instead of hardcoding tool tags
- Add comprehensive test cases in demo.go to verify:
- build.Default.Compiler is correctly patched to "gc"
- ToolTags are properly populated from internal/buildcfg
- ReleaseTags are correctly generated
- Validates the go/build patches work as expected
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Add //go:build go1.23 constraint to skip compilation on Go 1.21/1.22
where runtime.(*Func).Name is not implemented in llgo, causing linker
errors when internal/bisect is pulled in as a dependency.
The demo works correctly on Go 1.23+ where the dependency chain or
internal/bisect behavior avoids calling the unimplemented method.
Fixes compatibility issue reported in PR review.
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- Moved full overlay file from runtime/_overlay/go/build/build.go to
runtime/internal/go/build/build.go to make it clearer what's being overridden
- Updated runtime/overlay.go to embed from new location
- Created demo under _demo/go/gobuild to demonstrate go/build package working with llgo
- The overlay still contains the full file but is now organized under runtime/internal
following the project's pattern for patched standard library packages
Fixes#1346
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