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gc: include struct field tags in type equality

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R=ken2
CC=golang-dev
https://golang.org/cl/1667048
This commit is contained in:
Russ Cox 2010-06-21 13:06:39 -07:00
parent 96d35c6984
commit 2fc0b4f01b
1 changed files with 13 additions and 1 deletions
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14
src/cmd/gc/subr.c
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@ -1725,6 +1725,18 @@ cplxsubtype(int et)
return 0;
}
static int
eqnote(Strlit *a, Strlit *b)
{
if(a == b)
return 1;
if(a == nil || b == nil)
return 0;
if(a->len != b->len)
return 0;
return memcmp(a->s, b->s, a->len) == 0;
}
// Return 1 if t1 and t2 are identical, following the spec rules.
//
// Any cyclic type must go through a named type, and if one is
@ -1745,7 +1757,7 @@ eqtype(Type *t1, Type *t2)
for(t1=t1->type, t2=t2->type; t1 && t2; t1=t1->down, t2=t2->down) {
if(t1->etype != TFIELD || t2->etype != TFIELD)
fatal("struct/interface missing field: %T %T", t1, t2);
if(t1->sym != t2->sym || t1->embedded != t2->embedded || !eqtype(t1->type, t2->type))
if(t1->sym != t2->sym || t1->embedded != t2->embedded || !eqtype(t1->type, t2->type) || !eqnote(t1->note, t2->note))
return 0;
}
return t1 == T && t2 == T;