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-rw-r--r--sys/src/cmd/dc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/cmd/dc.c b/sys/src/cmd/dc.c
index c121b13d8..abc7060fd 100644
--- a/sys/src/cmd/dc.c
+++ b/sys/src/cmd/dc.c
@@ -1218,7 +1218,7 @@ init(int argc, char *argv[])
strptr = salloc(0);
divxyz = salloc(0);
stkbeg = stkptr = &stack[0];
- stkend = &stack[STKSZ];
+ stkend = &stack[STKSZ-1];
stkerr = 0;
readptr = &readstk[0];
k=0;