pprof on MacOS can't find dot?

[rkube]

Hi,
I've just installed pprof on MacOS 14.0 through go install github.com/google/pprof@latest . When I try to look
to look at a profiling data with the command below I get an error.

$ pprof -http=":" alloc-profile.pb.gz                             
Main binary filename not available.
Serving web UI on http://localhost:50980

Error: <stdin>: syntax error in line 36 scanning a quoted string (missing endquote? longer than 16384?)
String starting:"evalrule(::AdjointSensitivityIntegrand{ComponentVector{Float64, Vector{Float64},
Failed to execute dot. Is Graphviz installed?
exit status 1

I have graphviz installed through homebrew and the dot binary is available on my system:

$ which dot
/opt/homebrew/bin/dot

When I request a dot output from pprof it works fine:

$ pprof -dot alloc-profile.pb.gz | head -n 2
Main binary filename not available.
digraph "unnamed" {
node [style=filled fillcolor="#f8f8f8"]
[...]

How can I get pprof output in my browser?

[aalexand]

I think the first error is about dot failing to parse the file, not about dot not found.

I also think your second command doesn't run dot, it only generated a text dot file. Try "-svg".

[aalexand]

@rkube Basically, I think most likely an invalid dot file was produced for this profile. Maybe lack of escaping of some weird character in the function name. Can you share the profile?

[rkube]

Thanks. I think it was a user error.