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net/http/pprof: avoid panic with user-defined "GET /" route #65791

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net/http/pprof: avoid panic with user-defined "GET /" route #65791

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16 changes: 11 additions & 5 deletions src/net/http/pprof/pprof.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
// The package is typically only imported for the side effect of
// registering its HTTP handlers.
// The handled paths all begin with /debug/pprof/.
// As of Go 1.22, all the paths must be requested with GET.
//
// To use pprof, link this package into your program:
//
Expand Down Expand Up @@ -75,6 +76,7 @@ import (
"context"
"fmt"
"html"
"internal/godebug"
"internal/profile"
"io"
"log"
Expand All @@ -91,11 +93,15 @@ import (
)

func init() {
http.HandleFunc("/debug/pprof/", Index)
http.HandleFunc("/debug/pprof/cmdline", Cmdline)
http.HandleFunc("/debug/pprof/profile", Profile)
http.HandleFunc("/debug/pprof/symbol", Symbol)
http.HandleFunc("/debug/pprof/trace", Trace)
prefix := ""
if godebug.New("httpmuxgo121").Value() != "1" {
prefix = "GET "
}
http.HandleFunc(prefix+"/debug/pprof/", Index)
http.HandleFunc(prefix+"/debug/pprof/cmdline", Cmdline)
http.HandleFunc(prefix+"/debug/pprof/profile", Profile)
http.HandleFunc(prefix+"/debug/pprof/symbol", Symbol)
http.HandleFunc(prefix+"/debug/pprof/trace", Trace)
}

// Cmdline responds with the running program's
Expand Down