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cmd/gc: avoid crash in %N print 

R=ken2
CC=golang-dev
https://golang.org/cl/6609052
This commit is contained in:
Russ Cox 2012-10-07 15:35:01 -04:00
parent 373dbcb37a
commit 54191126e4
1 changed files with 2 additions and 2 deletions
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4
src/cmd/gc/fmt.c
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@ -1086,9 +1086,9 @@ exprfmt(Fmt *f, Node *n, int prec)
case OLITERAL: // this is a bit of a mess
if(fmtmode == FErr && n->sym != S)
return fmtprint(f, "%S", n->sym);
if(n->val.ctype == CTNIL)
if(n->val.ctype == CTNIL && n->orig != N)
n = n->orig; // if this node was a nil decorated with at type, print the original naked nil
if(n->type != types[n->type->etype] && n->type != idealbool && n->type != idealstring) {
if(n->type != T && n->type != types[n->type->etype] && n->type != idealbool && n->type != idealstring) {
// Need parens when type begins with what might
// be misinterpreted as a unary operator: * or <-.
if(isptr[n->type->etype] || (n->type->etype == TCHAN && n->type->chan == Crecv))