go version is 1.15 , cross compile on darwin  and run on linux,  i will try 
to run with race deector



在2020年11月6日星期五 UTC+8 下午4:34:21<kortschak> 写道:

> The full panic would help, but somehow you have a string with a nil
> pointer that is 4 bytes long. Where is the string generated? Are you
> using Cgo? Have you run with the race detector? Also, what version of
> Go are you using?
>
> On Fri, 2020-11-06 at 00:00 -0800, blade...@gmail.com wrote:
> > i check my code, and strconv.ParseFloat(s, 64), s is a string, it is
> > correct, but after run my program for a while, it's panic and report
> > some output info. i cant't find why , anyone can help me 
> > 
> > 
> > output infor:
> > panic: runtime error: invalid memory address or nil pointer
> > dereference
> > [signal SIGSEGV: segmentation violation code=0x1 addr=0x0
> > pc=0x4a2654]
> > 
> > goroutine 2948735 [running]:
> > strconv.special(0x0, 0x4, 0x0, 0x3ff2e147ae147ae1, 0x1)
> > strconv/atof.go:48 +0x34
> > strconv.atof64(0x0, 0x4, 0x41421d, 0xc05323c380, 0xc05dd95ab0, 0xa)
> > strconv/atof.go:612 +0x50
> > strconv.parseFloatPrefix(0x0, 0x4, 0x40, 0x3, 0xc078741b48,
> > 0xc05dd95ab0, 0xc078741b40)
> > strconv/atof.go:695 +0x95
> > strconv.ParseFloat(0x0, 0x4, 0x40, 0xa, 0xc078741bc8, 0xc05dd95a01)
> > strconv/atof.go:683 +0x45
> > xxxxxx/api.handleDPriceRange(0xc01777c820)
> > xxxxxx/api/PriceCalendar.go:1008 +0x212
> > xxxxxx/api.priceCalendarItemExpand(0xc016e34a80, 0xc96, 0xc96)
> > xxxxxx/api/PriceCalendar.go:1104 +0xb9b
> > xxxxxx/api.FlightlineRT(0xc001bd9d98, 0xc0002294f0, 0x1306020,
> > 0xc04f1415c0, 0xc05e653a70, 0x10000c000229518, 0xc05193dc00)
> > xxxxxx/api/external_api.go:146 +0x108
> > xxxxxx/api.aaa.func2(0xc04f1456b0, 0xc04f102340, 0xc05d23aa68, 0x3,
> > 0xc05465c230, 0x63, 0xc04f13c301, 0x7, 0x0, 0x0, ...)
> > xxxxxx/api/external_api.go:343 +0x25b
> > created by xxxxxx/api.AppMainpage
> > xxxxxx/api/external_api.go:330 +0x57e
> > -- 
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> > .
>
>
>

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