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cmd/dist: fix bug in bsubst 

R=golang-dev, r, dsymonds, akumar
CC=golang-dev
https://golang.org/cl/5624054
This commit is contained in:
Alex Brainman 2012-02-05 15:16:39 +11:00
parent cdfd5b2bed
commit c06bd52a2e
1 changed files with 4 additions and 1 deletions
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5
src/cmd/dist/buf.c vendored Normal file → Executable file
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@ -115,8 +115,11 @@ bsubst(Buf *b, char *x, char *y)
if(p == nil)
break;
if(nx != ny) {
if(nx < ny)
if(nx < ny) {
pos = p - b->p;
bgrow(b, ny-nx);
p = b->p + pos;
}
xmemmove(p+ny, p+nx, (b->p+b->len)-(p+nx));
}
xmemmove(p, y, ny);