觉得golang的 variable declared but not used 和 package imported but not used 在调试代码的时候很不方便!!!!!! 这么多语言中只有golang会有变量不使用,包引用不用报错的!
有没有方法去掉这两个验证? 再上生产的时候开启验证再改代码?
1 解决:declared but not used
修改go/src/cmd/gc/walk.c
for(l=fn->dcl;l;l=l->next){
if(l->n->op!=ONAME||(l->n->class&~PHEAP)!=PAUTO||l->n->sym->name[0]=='&'||l->n->used)
continue;
if(l->n->defn&&l->n->defn->op==OTYPESW){
if(l->n->defn->left->used)
continue;
lineno=l->n->defn->left->lineno;
l->n->defn->left->used=1;// suppress repeats
} else {
lineno = l->n->lineno;
// 此处修改
// yyerror("%S declared and not used,l->n->sym); // life
}
}
2 解决imported but not used:
修改:go/src/cmd/gc/lex.c
if
(
s
->
def
->
op
==
OPACK
)
{
// throw away top-level package name leftover
// from prevIoUs file.
// leave s->block set to cause redeclaration
// errors if a conflicting top-level name is
// introduced by a different file.
if(!s->def->used && !nSyntaxerrors) {
lineno = s->def->lineno;
warn("imported and not used: \"%Z\"",s->def->pkg->path);
}
s->def = N;
continue;
}
本文之前发布在google group golang-china上:https://groups.google.com/forum/?fromgroups#!topic/golang-china/W0WMC__2NO8
