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fix possible infinite recursion in eqtype.

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don't use intermediate register to move
32-or-fewer-bit immediate constants
into memory.

R=ken
OCL=23726
CL=23726
This commit is contained in:
Russ Cox 2009-01-28 16:42:26 -08:00
parent 3ec4675220
commit 282bf8cc8c
2 changed files with 5 additions and 3 deletions
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4
src/cmd/6g/gsubr.c
View File

@ -554,7 +554,9 @@ gmove(Node *f, Node *t)
goto st; goto st;
st: st:
if(f->op == OCONST) { // 64-bit immediates only allowed for move into registers.
// this is not a move into a register.
if(f->op == OCONST || (f->op == OLITERAL && !t64)) {
gins(a, f, t); gins(a, f, t);
return; return;
} }

2
src/cmd/gc/subr.c
View File

@ -1707,7 +1707,7 @@ eqtype(Type *t1, Type *t2, int d)
return 0; return 0;
if(ta->etype != TFIELD || tb->etype != TFIELD) if(ta->etype != TFIELD || tb->etype != TFIELD)
return 0; return 0;
if(!eqtype(ta->type, tb->type, 0)) if(!eqtype(ta->type, tb->type, d+1))
return 0; return 0;
ta = ta->down; ta = ta->down;
tb = tb->down; tb = tb->down;