[OSX 10.8.5] Can't seem to be able to debug a program

[hacpai]

Running a process

dlv run
could not launch process: could not fork/exec
[Hope I was of service hunting your bug!]

[flike]

+1

[derekparker]

Seems related to #159. Have you signed the binary as per: https://github.com/derekparker/delve/wiki/Building#os-x ?

[hacpai]

@derekparker

Run the following: CERT=$mycert make install, which will install the binary and codesign it.

Does it mean enter codesign -s dlv-cert $(which dlv)?

[derekparker]

@Henry-Zhuang yes, you must codesign the dlv binary before using it on OSX.

[hacpai]

@derekparker

 ~/ codesign -s dlv-cert $(which dlv)
/Users/MasterMac/.gvm/pkgsets/system/global/bin/dlv: is already signed
 ~/ dlv run hello.go
Could not compile program: exit status 1
[Hope I was of service hunting your bug!]

[derekparker]

Looks like go build is failing. Can you compile the program normally?
On Fri, Jul 3, 2015 at 8:14 PM henry-zhuang notifications@github.com
wrote:

@derekparker https://github.com/derekparker

 ~/ codesign -s dlv-cert $(which dlv)
/Users/MasterMac/.gvm/pkgsets/system/global/bin/dlv: is already signed
 ~/ dlv run hello.go
Could not compile program: exit status 1
[Hope I was of service hunting your bug!]

—
Reply to this email directly or view it on GitHub
https://github.com/derekparker/delve/issues/160#issuecomment-118447587.

[hacpai]

@derekparker Yes, I enter go build hello.go

It succeed and run normally.

[derekparker]

Hmmm, can you send a gist of hello.go? Also dlv run does not take
arguments.
On Fri, Jul 3, 2015 at 8:44 PM henry-zhuang notifications@github.com
wrote:

@derekparker https://github.com/derekparker Yes, I enter go build
hello.go

It succeed and run normally.

—
Reply to this email directly or view it on GitHub
https://github.com/derekparker/delve/issues/160#issuecomment-118449265.

[hacpai]

@derekparker Thank you. It works.

It must run in the only hello.go folder.

[mikepc]

I'm on 10.9.5, I have followed all of the instructions and I'm still receiving this error. Looking for ideas. I signed dlv successfully but it is still giving me the same issue. Works fine on my later version mac at home, but at work (I work for Nordstrom corporate) we are locked on OS 10.9.5

I receive the same error when I run as root as well as sudo.

• The private key is accessible by all applications (make install runs without an issue)
• The certificate is set to "Always Trust" for everything.

What else can I try?

[britannic]

If you haven't already checked, make sure you don't have multiple versions of dlv installed, "which -a" is very useful, e.g.:

| => which -a dlv /usr/local/bin/dlv /usr/local/bin/dlv /usr/local/go/bin/dlv /usr/local/go/bin/dlv

[mikepc]

x74f@M00973121:$ source /.terminal_startup
x74f@M00973121:$ cd $GOPATH/src/asf
x74f@M00973121:/goapi/src/asf$ dlv debug
could not launch process: could not fork/exec
x74f@M00973121:/goapi/src/asf$ which -a dlv /usr/local/bin/dlv /usr/local/bin/dlv /usr/local/go/bin/dlv /usr/local/go/bin/dlv
/usr/local/bin/dlv
/usr/local/bin/dlv
/usr/local/bin/dlv
x74f@M00973121:/goapi/src/asf$ codesign -s dlv-cert $(which dlv)
/usr/local/bin/dlv: is already signed

[britannic]

Is " /usr/local/go/bin/dlv" signed also? Its possible that when you execute dlv, " /usr/local/go/bin/dlv" gets called before your signed version (if it isn't already signed the same as "/usr/local/bin/dlv").

[mikepc]

Sorry, there is only one, that was part of the other one

x74f@M00973121:/goapi/src/asf$ which -a dlv
/usr/local/bin/dlv
x74f@M00973121:/goapi/src/asf$

[mikepc]

sudo GOPATH=/Users/x74f/goapi dlv debug
Password:
could not launch process: invalid magic number in record at byte 0x0

[mikepc]

Reading https://github.com/derekparker/delve/issues/474 now

[mikepc]

I uninstalled all versions of delve, and deleted the certificate starting over with a HomeBrew installation.

Now I get the could not launch process: invalid magic number in record at byte 0x0 error consistently.

[britannic]

Another question, are you compiling native Mac OS X executables or cross compiling for a different architecture?

[mikepc]

Native only.

[mikepc]

I am able to run dlv exec to get the (dlv) prompt, I just can't run dlv debug

This all started because I'm trying to get Delve to work with VSCode (a setup that works on my home machine)

This is the output from VSCode:
2016/06/16 10:41:08 debugger.go:55: launching process with args: [./debug]
could not launch process: invalid magic number in record at byte 0x0

This is with the homebrew installation of Delve, not a manual one.

go version go1.6.2 darwin/amd64

I believe the issue may be multiple versions of Go installed (manual vs. homebrew) since the homebrew installation is going to install into the homebrew Go etc. I'm working on getting the manual out of there now.

[mikepc]

Found it.. package main

I'm good to go. Thank you!