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gc: never crash during a debugging print

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TBR=lvd
CC=golang-dev
https://golang.org/cl/5686063
This commit is contained in:
Russ Cox 2012-02-22 00:29:23 -05:00
parent 818e3cdb09
commit 6c7daca236
1 changed files with 1 additions and 5 deletions
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6
src/cmd/gc/fmt.c
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@ -1346,15 +1346,11 @@ nodefmt(Fmt *f, Node *n)
Type *t;
t = n->type;
if(n->orig == N) {
n->orig = n;
fatal("node with no orig %N", n);
}
// we almost always want the original, except in export mode for literals
// this saves the importer some work, and avoids us having to redo some
// special casing for package unsafe
if(fmtmode != FExp || n->op != OLITERAL)
if((fmtmode != FExp || n->op != OLITERAL) && n->orig != N)
n = n->orig;
if(f->flags&FmtLong && t != T) {