Szabolcs Horvát <szhorvat@xxxxxxxxx> writes: > I am using the Triangle library > <http://www.cs.cmu.edu/~quake/triangle.html> to generate Delaunay > triangulations of a large number of points. When I compile this > library using the -ftree-ter optimization option only, the library > gives me incorrect results for certain inputs. The -ftree-ter option > is enabled by optimization level -O1 or higher, which also cause the > library to return incorrect results. > > Question: Does this indicate that there is a bug in gcc or is it more > likely that there's a problem in how the library is written? > > Unfortunately I am not familiar with the code of Triangle, I just > compile it and use it. > > I tried this with gcc 4.6.3 on Ubuntu and gcc 4.7.0 on Windows (from > <http://nuwen.net/mingw.html>), both 32-bit. While a bug in GCC is always possible, it is more likely that there's a problem in how the library is written. Ian
