Re: [go-nuts] strconv.ParseFloat panic
thanks all, i find a race problem, and fix it. 在2020年11月7日星期六 UTC+8 上午5:28:51 写道： > OK, so you're not using Cgo, that leaves some other unsafe use, a data > race or unlikely some weird compiler bug. > > I'd start looking in api.handleDPriceRange to see where the string > input to strconv.ParseFloat is being constructed. > > On Fri, 2020-11-06 at 01:10 -0800, blade...@gmail.com wrote: > > 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 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? > > > > > > -- 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/e0939854-7dea-450e-a1ec-c3985b889cb2n%40googlegroups.com.
Re: [go-nuts] strconv.ParseFloat panic
OK, so you're not using Cgo, that leaves some other unsafe use, a data race or unlikely some weird compiler bug. I'd start looking in api.handleDPriceRange to see where the string input to strconv.ParseFloat is being constructed. On Fri, 2020-11-06 at 01:10 -0800, blade...@gmail.com wrote: > 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 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? > > -- 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/dc04cd21bb00f2e520f9791fdad6c1731c85a8a2.camel%40kortschak.io.
Re: [go-nuts] strconv.ParseFloat panic
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 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 > > xx/api.handleDPriceRange(0xc01777c820) > > xx/api/PriceCalendar.go:1008 +0x212 > > xx/api.priceCalendarItemExpand(0xc016e34a80, 0xc96, 0xc96) > > xx/api/PriceCalendar.go:1104 +0xb9b > > xx/api.FlightlineRT(0xc001bd9d98, 0xc0002294f0, 0x1306020, > > 0xc04f1415c0, 0xc05e653a70, 0x1c000229518, 0xc05193dc00) > > xx/api/external_api.go:146 +0x108 > > xx/api.aaa.func2(0xc04f1456b0, 0xc04f102340, 0xc05d23aa68, 0x3, > > 0xc05465c230, 0x63, 0xc04f13c301, 0x7, 0x0, 0x0, ...) > > xx/api/external_api.go:343 +0x25b > > created by xx/api.AppMainpage > > xx/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...@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/afa99a55-f4ec-46d7-8a5f-fc981953583bn%40googlegroups.com.
Re: [go-nuts] strconv.ParseFloat panic
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 > xx/api.handleDPriceRange(0xc01777c820) > xx/api/PriceCalendar.go:1008 +0x212 > xx/api.priceCalendarItemExpand(0xc016e34a80, 0xc96, 0xc96) > xx/api/PriceCalendar.go:1104 +0xb9b > xx/api.FlightlineRT(0xc001bd9d98, 0xc0002294f0, 0x1306020, > 0xc04f1415c0, 0xc05e653a70, 0x1c000229518, 0xc05193dc00) > xx/api/external_api.go:146 +0x108 > xx/api.aaa.func2(0xc04f1456b0, 0xc04f102340, 0xc05d23aa68, 0x3, > 0xc05465c230, 0x63, 0xc04f13c301, 0x7, 0x0, 0x0, ...) > xx/api/external_api.go:343 +0x25b > created by xx/api.AppMainpage > xx/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.
[go-nuts] strconv.ParseFloat panic
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 xx/api.handleDPriceRange(0xc01777c820) xx/api/PriceCalendar.go:1008 +0x212 xx/api.priceCalendarItemExpand(0xc016e34a80, 0xc96, 0xc96) xx/api/PriceCalendar.go:1104 +0xb9b xx/api.FlightlineRT(0xc001bd9d98, 0xc0002294f0, 0x1306020, 0xc04f1415c0, 0xc05e653a70, 0x1c000229518, 0xc05193dc00) xx/api/external_api.go:146 +0x108 xx/api.aaa.func2(0xc04f1456b0, 0xc04f102340, 0xc05d23aa68, 0x3, 0xc05465c230, 0x63, 0xc04f13c301, 0x7, 0x0, 0x0, ...) xx/api/external_api.go:343 +0x25b created by xx/api.AppMainpage xx/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.
