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begin debugging gvisor crash #5501

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begin debugging gvisor crash #5501

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9 changes: 9 additions & 0 deletions compiler/compiler.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1354,6 +1354,15 @@ func (b *builder) createFunctionStart(intrinsic bool) {
// diagnostic.
func (b *builder) createFunction() {
b.createFunctionStart(false)
// createFunctionStart returns early (leaving blockInfo unset) when it hits
// an error such as a redeclared symbol. Don't plow into the block loop and
// panic on an empty blockInfo — the error was already recorded.
if b.blockInfo == nil {
// TINYGO-DEBUG: surface the redeclaration collision.
fmt.Printf("TINYGO-DEBUG skipping fn (redeclared/errored): %s pkg=%s\n",
b.fn.RelString(nil), b.fn.Pkg.Pkg.Path())
return
}

// Fill blocks with instructions.
for _, block := range b.fn.DomPreorder() {
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