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FIX: make sure nans are dealt with in path #4526

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FIX: make sure nans are dealt with in path #4526

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ed7a3dc
FIX: make sure nans are dealt with in path
tacaswell Jun 15, 2015
b87baf4
DOC: make comment clearer
tacaswell Jun 15, 2015
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9 changes: 8 additions & 1 deletion src/path_converters.h
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Original file line number Diff line number Diff line change
Expand Up @@ -218,15 +218,22 @@ class PathNanRemover : protected EmbeddedQueue<4>
code == (agg::path_cmd_end_poly | agg::path_flags_close)) {
return code;
}
double _x, _y;

if (MPL_notisfinite64(*x) || MPL_notisfinite64(*y)) {
do {
code = m_source->vertex(x, y);
// This de-reference makes sure this loop is not
// optimized out of existence
// This is working around an apparent bug in gcc 5.1
_x = *x;
_y = *y;

if (code == agg::path_cmd_stop ||
code == (agg::path_cmd_end_poly | agg::path_flags_close)) {
return code;
}
} while (MPL_notisfinite64(*x) || MPL_notisfinite64(*y));
} while (MPL_notisfinite64(_x) || MPL_notisfinite64(_y));
return agg::path_cmd_move_to;
}

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