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Try to fix test_time.test_AsSecondsDouble() on "x86 Gentoo Non-Debug with X 3.x" buildbot

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Use volatile keyword in _PyTime_Round()
This commit is contained in:
Victor Stinner 2015-09-10 11:48:00 +02:00
parent 350b51839a
commit 1efbebaac2
1 changed files with 8 additions and 3 deletions
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11
Python/pytime.c
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@ -75,12 +75,17 @@ _PyTime_RoundHalfEven(double x)
static double static double
_PyTime_Round(double x, _PyTime_round_t round) _PyTime_Round(double x, _PyTime_round_t round)
{ {
/* volatile avoids optimization changing how numbers are rounded */
volatile double d;
d = x;
if (round == _PyTime_ROUND_HALF_EVEN) if (round == _PyTime_ROUND_HALF_EVEN)
return _PyTime_RoundHalfEven(x); d = _PyTime_RoundHalfEven(d);
else if (round == _PyTime_ROUND_CEILING) else if (round == _PyTime_ROUND_CEILING)
return ceil(x); d = ceil(d);
else else
return floor(x); d = floor(d);
return d;
} }
static int static int