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Don't access invalid elements with depth = 0

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This is a corner case in the planner that was exposed by the recent
changes to the way the dive plan reflects the gases during the dive.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2013-11-08 21:40:59 +09:00
parent 8941e8677e
commit edecb0fcf9
1 changed files with 2 additions and 1 deletions
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planner.c
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@ -616,7 +616,8 @@ void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, b
for (stopidx = 0; stopidx < sizeof(decostoplevels) / sizeof(int); stopidx++)
if (decostoplevels[stopidx] >= depth)
break;
stopidx--;
if (stopidx > 0)
stopidx--;
/* so now we know the first decostop level above us
* NOTE, this could be the surface or a long list of potential stops