Golang delve: Difference between revisions
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Delve builds your executable automatically with flags required for it to debug your program. | Delve builds your executable automatically with flags required for it to debug your program. | ||
== Start Delve == | |||
<blockquote> | |||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
# start debugger | # start debugger | ||
| Line 32: | Line 34: | ||
dlv test [example.com/x/foo/package] # run tests | dlv test [example.com/x/foo/package] # run tests | ||
</syntaxhighlight> | </syntaxhighlight> | ||
</blockquote><!-- Start Delve --> | |||
== Breakpoint == | |||
<blockquote> | |||
You can add breakpoints in src, or interactively | |||
<syntaxhighlight lang="go"> | <syntaxhighlight lang="go"> | ||
runtime.Breakpoint() // delve breakpoint | |||
</syntaxhighlight> | |||
<syntaxhighlight lang="bash"> | |||
b main.main # add breakpoint to 'main.go's 'main' method | b main.main # add breakpoint to 'main.go's 'main' method | ||
b main.go:10 # add breakpoint to 'main.go's line 10 | b main.go:10 # add breakpoint to 'main.go's line 10 | ||
</syntaxhighlight> | |||
</blockquote><!-- Breakpoint --> | |||
== Session == | |||
<blockquote> | |||
Add your breakpoints, then continue to execute your program | |||
<syntaxhighlight lang="go"> | |||
c # continue (start executing) | c # continue (start executing) | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| Line 49: | Line 65: | ||
<enter> # repeat last command | <enter> # repeat last command | ||
</syntaxhighlight> | </syntaxhighlight> | ||
</blockquote><!-- Session --> | |||
</blockquote><!-- Usage --> | </blockquote><!-- Usage --> | ||
Revision as of 18:20, 26 June 2022
delve is a go debugger.
It is more knowledgeable about the go runtime than golang gdb .
There are also editor integrations.
Documentation
Install
go install github.com/go-delve/delve/cmd/dlv@latest
Usage
Delve builds your executable automatically with flags required for it to debug your program.
Start Delve
# start debugger dlv debug [example.com/x/foo/package] [-- [--your-params]] # run program dlv test [example.com/x/foo/package] # run testsBreakpoint
You can add breakpoints in src, or interactively
runtime.Breakpoint() // delve breakpointb main.main # add breakpoint to 'main.go's 'main' method b main.go:10 # add breakpoint to 'main.go's line 10Session
Add your breakpoints, then continue to execute your program
c # continue (start executing)Inspect your program, learn
p yourVar # print var l # print location n # next line (enters loop, not skip to end) s # step into line <enter> # repeat last command
