GEOS crashes on check in MingW GCC 4.6.2

[robe]

strk,

Attached are the errors I was taking about.

This is using the latest MingW which comes packaged 4.6.2 GCC. This isn't the mingw-64 chanin just regular old mingw.

Bborie has similar issues.

Here is tail end

./tests/robustness.xml: case4: test1: areatest(): failed.
	Description: http://postgis.refractions.net/pipermail/postgis-users/2006-March/011332.html (2)
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79911288958257134014671124892712743013627656751873257337071334876132260343049438785235460438699007416313412787511834915468090617739201263814999210971351697695949236051963992979569044479767643002167415708244162271858330575492354949167277861892594374708408316693764374528.0000000000000000 79911351935872233746301242485860080340196753821346066133375484171566424706630019945038377730469806363091480429720555227662857023218236490762041026802175313825017449716712648429554367476093268403155161937728265455318822324613703272033946299558047670378538278970598621184.0000000000000000, 79911288958257134014671124892712743013627656751873257337071334876132260343049438785235460438699007416313412787511834915468090617739201263814999210971351697695949236051963992979569044479767643002167415708244162271858330575492354949167277861892594374708408316693764374528.0000000000000000 79911351935872233746301242485860080340196753821346066133375484171566424706630019945038377730469806363091480429720555227662857023218236490762041026802175313825017449716712648429554367476093268403155161937728265455318822324613703272033946299558047670378538278970598621184.0000000000000000))
	Expected result: 1
	Obtained result: TopologyException: found non-noded intersection between LINESTRING (7.99114e+268 7.99114e+268, 7.99114e+268 7.99114e+268) and LINESTRING (7.99114e+268 7.99114e+268, 7.99114e+268 7.99114e+268) at 7.9911351935872791e+268 7.9911351935872219e+268

FAIL: testrunner
==================
1 of 1 test failed
==================
make[3]: Leaving directory `/c/projects/geos/branches/3.3/tests/xmltester'
make[2]: Leaving directory `/c/projects/geos/branches/3.3/tests/xmltester'
make[1]: Leaving directory `/c/projects/geos/branches/3.3/tests'

        Expected result: 1
        Obtained result: TopologyException: found non-noded intersection betwee
 LINESTRING (7.99114e+268 7.99114e+268, 7.99114e+268 7.99114e+268) and LINESTRI
G (7.99114e+268 7.99114e+268, 7.99114e+268 7.99114e+268) at 7.9911351935872791e
268 7.9911351935872219e+268

Assertion failed: eiNew->coord.equals2D(intPt), file SegmentNodeList.cpp, line 83

Attached is the full log

[robe]

Forgot to mention this is on my windows xp box. Have to double-check on my windows 7.

[dustymugs]

For Windows 7 32-bit with the same MinGW, I get a different assertion failure

group: capi::GEOSisValidDetail, test: test<3>
problem: assertion failed

tests summary: failures: 1 ok: 729

[strk]

Was it built with -ffloat-store ? Does anything change by changing optimization flags ?

[dustymugs]

My build of geos was not built using -ffloat-store. It was built using CFLAGS=-O0. When looking only at the group capi::GEOSisValidDetail test: test<3> is:

capi::GEOSisValidDetail: ..NOTICE: ParseException: Expected number but encountered word: 'NaN'
[3=F]...

[strk]

Uhm, the NaN test in trunk is protected by:

 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L

Does it seem a sensible workaround ?

[strk]

The code in trunk comes from r3469 committed by Mat specifically to workaround VC++ builds... Worth backporting ?

[strk]

This ticket is actually a bit of a mess, a mix of different errors. Latest comments are about the NaN handling but original one is about a topology exception.

Seems cleaner to just close it and let reporters reopen if they still have issues.