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4 months ago
3
65535 errors (with errors.Join + fmt.Errorf ) take 54GB memory
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| package main | |
| import ( | |
| "errors" | |
| "fmt" | |
| "os" | |
| ) | |
| func main() { | |
| // Create 65535 errors | |
| var errs error | |
| for j := 0; j < 65535; j++ { | |
| newErr := errors.New(fmt.Sprintf("error %d", j)) | |
| if errs == nil { | |
| errs = newErr | |
| } else { | |
| errs = errors.Join(newErr, errs) | |
| errs = fmt.Errorf("err %w", errs) | |
| } | |
| } | |
| // Wrap with fmt.Errorf | |
| wrappedErr := fmt.Errorf("got %w", errs) | |
| // Write to file | |
| outputFile, err := os.Create("err1.log") | |
| if err != nil { | |
| panic(err) | |
| } | |
| defer outputFile.Close() | |
| fmt.Fprintln(outputFile, wrappedErr.Error()) | |
| } |
