On Tue, Mar 31, 2020 at 5:19 PM sanye <xba...@gmail.com> wrote:
>
> Hello gophers,
> I have a problem when debugging with gdb using go1.14/1.14.1, set a
> breakpoint on entrypoint will not show line and file information, but
> go1.13.9 and older versions have, here is the detail
>
> demo.go
> ----------------
> package main
>
> func main() {
> println("hello world")
> }
>
> build
> ----------------
> go build -gcflags "all=-N -l" demo.go
>
> go1.13.9
> -----------------
> $ go version
> go version go1.13.9 linux/amd64
> $ go build -gcflags "all=-N -l" demo.go
> $ gdb ./demo
> ...
> (gdb) info files
> Symbols from "/dev/shm/ex/demo".
> Local exec file:
> `/dev/shm/ex/demo', file type elf64-x86-64.
> Entry point: 0x4542a0
> ...
> (gdb) b *0x4542a0
> Breakpoint 1 at 0x4542a0: file /dev/shm/ex/go/src/runtime/rt0_linux_amd64.s,
> line 8.
>
> go1.14/go1.14.1
> ----------------
> $ go version
> go version go1.14.1 linux/amd64
> $ go build -gcflags "all=-N -l" demo.go
> $ gdb ./demo
> ...
> (gdb) info files
> Symbols from "/dev/shm/ex/demo".
> Local exec file:
> `/dev/shm/ex/demo', file type elf64-x86-64.
> Entry point: 0x45cdd0
> ...
> (gdb) b *0x45cdd0
> Breakpoint 1 at 0x45cdd0
>
> any help would be appreciated
Odd. I can recreate this, but I don't know what is going on here.
Please open a bug report at https://golang.org/issue. Thanks.
Ian
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