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