diff options
| -rw-r--r-- | layout/base/nsLayoutUtils.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/layout/base/nsLayoutUtils.h b/layout/base/nsLayoutUtils.h index 63253fd10..0a82dbf6a 100644 --- a/layout/base/nsLayoutUtils.h +++ b/layout/base/nsLayoutUtils.h @@ -1439,13 +1439,14 @@ public: /** * This function increases an initial intrinsic size, 'aCurrent', according * to the given 'aPercent', such that the size-increase makes up exactly - * 'aPercent' percent of the returned value. If 'aPercent' is less than - * or equal to zero the original 'aCurrent' value is returned. If 'aPercent' - * is greater than or equal to 1.0 the value nscoord_MAX is returned. + * 'aPercent' percent of the returned value. If 'aPercent' or 'aCurrent' are + * less than or equal to zero the original 'aCurrent' value is returned. + * If 'aPercent' is greater than or equal to 1.0 the value nscoord_MAX is + * returned. */ static nscoord AddPercents(nscoord aCurrent, float aPercent) { - if (aPercent > 0.0f) { + if (aPercent > 0.0f && aCurrent > 0) { return MOZ_UNLIKELY(aPercent >= 1.0f) ? nscoord_MAX : NSToCoordRound(float(aCurrent) / (1.0f - aPercent)); } |