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Dereference of nil in WriteColorFile #67

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sminux opened this issue Oct 29, 2024 · 0 comments · May be fixed by #68

sminux commented Oct 29, 2024

If q, err := New(content, level) returns an error when the content is too long
https://github.com/skip2/go-qrcode/blob/da1b6568686e89143e94f980a98bc2dbd5537f13/qrcode.go#L114C2-L114C31
'q' may be nil and is dereferenced at qrcode.go:116.

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x10061adb8]

Err check must be before the lines

go-qrcode/qrcode.go

Lines 116 to 117 in da1b656

    
           q.BackgroundColor = background 
        
           q.ForegroundColor = foreground

sminux linked a pull request

that will close this issue

fix Dereference of nil in WriteColorFile #68

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