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| author | Michael Stapelberg <stapelberg@debian.org> | 2013-03-04 21:27:36 +0100 |
|---|---|---|
| committer | Michael Stapelberg <michael@stapelberg.de> | 2013-03-04 21:27:36 +0100 |
| commit | 04b08da9af0c450d645ab7389d1467308cfc2db8 (patch) | |
| tree | db247935fa4f2f94408edc3acd5d0d4f997aa0d8 /src/cmd/gc/range.c | |
| parent | 917c5fb8ec48e22459d77e3849e6d388f93d3260 (diff) | |
| download | golang-04b08da9af0c450d645ab7389d1467308cfc2db8.tar.gz | |
Imported Upstream version 1.1~hg20130304upstream/1.1_hg20130304
Diffstat (limited to 'src/cmd/gc/range.c')
| -rw-r--r-- | src/cmd/gc/range.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/cmd/gc/range.c b/src/cmd/gc/range.c index d301e4e4f..50c4617c0 100644 --- a/src/cmd/gc/range.c +++ b/src/cmd/gc/range.c @@ -72,6 +72,15 @@ typecheckrange(Node *n) if(n->list->next) v2 = n->list->next->n; + // this is not only a optimization but also a requirement in the spec. + // "if the second iteration variable is the blank identifier, the range + // clause is equivalent to the same clause with only the first variable + // present." + if(isblank(v2)) { + n->list = list1(v1); + v2 = N; + } + if(v1->defn == n) v1->type = t1; else if(v1->type != T && assignop(t1, v1->type, &why) == 0) @@ -145,7 +154,7 @@ walkrange(Node *n) if(v2) { hp = temp(ptrto(n->type->type)); tmp = nod(OINDEX, ha, nodintconst(0)); - tmp->etype = 1; // no bounds check + tmp->bounded = 1; init = list(init, nod(OAS, hp, nod(OADDR, tmp, N))); } |