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 > -- > You received this message because you are subscribed to the Google > Groups "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, > send an email to golang-nuts+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/9c672d72-7daa-4fe1-9f84-136c2eaa2065n%40googlegroups.com > . -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/a0ebd55eb6be63355c1e44f9717a5710f78ca5a0.camel%40kortschak.io.
