cmd/cgo: build failed when any code have CFLAGS: -Werror=unused-vairable · golang/go#8420

2014-07-24T09:45:13.000Z

by **Snyh1010**: 1. What is a short input program that triggers the error? package main //#cgo CFLAGS: -Werror=unused-variable //void test(){} import "C" func main() { C.test() } 2. What is the full compiler output? snyh:shm$go build # _/run/shm ./a.go: In function ‘_cgo_043ca501ac1f_Cfunc_test’: ./a.go:32:49: error: unused variable ‘a’ [-Werror=unused-variable] cc1: some warnings being treated as errors ------------------------------------------ I have fixed this by a CL https://golang.org/cl/118890044/ The CL( https://golang.org/cl/109640045) had fix this problem under gcc. The first time I hasn't notice clang, so when the CL has been submitted, it broken freebsd because clang. And the CL has been undo. The broken problem is not caused by my code, it's appeared upon the submission because the CL contains the test code let the problem appeared. I have fixed the problem both clang and gcc. But it seems no one have confidence to submit it this time, I have send the CL request. Anyway I want the problem be fixed, with or without my CL.

(6 commenti) (0 reazioni) (0 assegnatari)Go (19.008 fork)batch import

NeedsInvestigationhelp wanted

Metriche repository

Star: (133.883 star)
Metriche merge PR: (Nessuna PR mergiata in 30 g)

Descrizione

by Snyh1010:

Guida contributor

Direzione di ricerca: Esamina la generazione del codice cgo per identificare dove viene introdotta una variabile inutilizzata durante la compilazione con Werror=unused variable. Controlla il codice C generato intorno alle funzioni cgo ... e assicurati che la variabile sia utilizzata o che il flag sia gestito correttamente.
Tech stack: goc
Dominio: compilersbackend
Tipo issue: Bug
Difficoltà: 3
Tempo stimato: 1-3 ore
Stato attività: Attiva
Chiarezza: Chiara
Prerequisiti: GoC compiler
Adatta ai principianti: 65

Metriche repository

Descrizione

Guida contributor

Ricevi issue Easy fresche nella tua inbox.