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gin-gonic/gin

Gin is a high-performance HTTP web framework written in Go. It provides a Martini-like API but with significantly better performance—up to 40 times faster—thanks to httprouter. Gin is designed for building REST APIs, web applications, and microservices. · Go · 57 source files

Analyzed at 34dac209ff on 2026-08-04. 30 documented errors.

Code / Message	Type	Severity	Tags
' ' in new path ' ' conflicts with existing wildcard ' ' in…	panic	error	routing, wildcard-conflict, gin, radix-tree, startup-panic
Bind struct can not be a pointer. Example: Use: gin.Bind	panic	error	binding, middleware, reflection, pointer, gin, startup-panic
catch-all wildcard ' ' in new path ' ' conflicts with…	panic	error	routing, catch-all, wildcard-conflict, gin, startup-panic
too many parameters	panic	error	server-startup, address, config, gin, startup-panic
unknown type	validation	error	binding, form, reflection, go
only one wildcard per path segment is allowed, has	panic	error	routing, invalid-path, wildcard, gin, startup-panic
handlers are already registered for path	panic	error	routing, duplicate-route, gin, startup-panic
unsupported field type for multipart.FileHeader	validation	error	binding, multipart, upload, go
no / before catch-all in path	panic	error	routing, invalid-path, catch-all, gin, startup-panic
gin: response body already written	exception	error	hijack, websocket, response-writer, go
invalid escape string in path	panic	error	routing, invalid-path, escape, gin, startup-panic
catch-all routes are only allowed at the end of the path in…	panic	error	routing, invalid-path, catch-all, gin, startup-panic
wildcards must be named with a non-empty name in path	panic	error	routing, invalid-path, wildcard, gin, startup-panic
invalid request	validation	error	binding, json, request, go
unsupported len of array for []*multipart.FileHeader	validation	error	binding, multipart, array, upload, go
the HTML debug render was created without files or glob…	panic	critical	render, html, template, configuration, panic, go
the accepted formats are not offered by the server	http	warning	content-negotiation, accept-header, http, go
URL parameters can not be used when serving a static folder	panic	critical	router, static, staticfs, startup, panic, go
key does not exist	panic	critical	context, keys, middleware, panic, go
obj is not ProtoMessage	validation	error	binding, protobuf, go
can not convert to map of strings	validation	error	binding, form, map, go
URL parameters can not be used when serving a static file	panic	critical	router, static, startup, panic, go
can not convert to map slices of strings	validation	error	binding, form, map, go
Cannot redirect with status code	panic	critical	render, redirect, http-status, panic, go
http method is not valid	panic	critical	router, http-method, startup, panic, go
cannot read nil body	http	error	request, body, middleware, go
is not valid value for	validation	error	binding, form, array, go
gin mode unknown: (available mode: debug release test)	panic	critical	mode, configuration, startup, panic, go
type (%T) unknown type	validation	error	binding, plain-text, go
is not supported in the collection_format. (multi, csv…	validation	error	binding, form, collection-format, go