garden Crash in ST_3DArea in sfcgal

[robe]

I'm guessing this function doesn't use proj or gdal in any way, so the crash should have nothing to do with the fact I'm running GDAL 2.0.0 and proj 4.9.1. I notice it's crashing in sfcgal, so probably has to do with fact I was doing postgis garden including CREATE EXTENSION postgis_sfcgal;

-- crashes
SELECT ST_3DArea(ST_GeomFromEWKT('SRID=4326;MULTIPOLYGONM(((0 0 2,10 0 1,10 10 -2,0 10 -5,0 0 -5),(5 5 6,7 5 6,7 7 6,5 7 10,5 5 -2)))') );

-- works fine
SELECT ST_3Area(ST_GeomFromEWKT('SRID=4326;MULTIPOLYGONM(((0 0 2,10 0 1,10 10 -2,0 10 -5,0 0 -5),(5 5 6,7 5 6,7 7 6,5 7 10,5 5 -2)))') );

SELECT postgis_full_version() || ' ' || version();

POSTGIS="2.2.0dev r13629" GEOS="3.5.0dev-CAPI-1.9.0 r4057" SFCGAL="1.0.5" PROJ="Rel. 4.9.1, 04 March 2015" GDAL="GDAL 2.0.0, released 2015/06/05" LIBXML="2.7.8" LIBJSON="0.12" RASTER PostgreSQL 9.4.1, compiled by Visual C++ build 1800, 64-bit

— backtrace looks like:

#0  0x000007fefd30aaad in RaiseException () from C:\Windows\system32\KernelBase.dll
#1  0x000000006144cce6 in libgcc_s_seh-1!_Unwind_RaiseException () from C:\ming64gcc48\projects\postgresql\rel\pg9.4w64gcc48edb\bin\libgcc_s_seh-1.dll
#2  0x000000006fcb5dc2 in libstdc++-6!.cxa_throw () from C:\ming64gcc48\projects\postgresql\rel\pg9.4w64gcc48edb\bin\libstdc++-6.dll
#3  0x000000006d47013a in libSFCGAL!_ZN5boost13serialization9singletonISt8multisetIPKNS0_18extended_type_infoENS0_6detail11key_compareESaIS5_EEE20get_mutable_instanceEv () from C:\ming64gcc48\projects\postgresql\rel\pg9.4w64gcc48edb\bin\libSFCGAL.dll
#4  0x000000006d4728b0 in libSFCGAL!_ZN5boost13serialization9singletonISt8multisetIPKNS0_18extended_type_infoENS0_6detail11key_compareESaIS5_EEE20get_mutable_instanceEv () from C:\ming64gcc48\projects\postgresql\rel\pg9.4w64gcc48edb\bin\libSFCGAL.dll
#5  0x000000006d244832 in libSFCGAL!_ZN6SFCGAL9algorithm6area3DERKNS_8GeometryE () from C:\ming64gcc48\projects\postgresql\rel\pg9.4w64gcc48edb\bin\libSFCGAL.dll
#6  0x000000006d297a6f in sfcgal_geometry_area_3d () from C:\ming64gcc48\projects\postgresql\rel\pg9.4w64gcc48edb\bin\libSFCGAL.dll
#7  0x00000000708916f9 in sfcgal_area3D () from C:\ming64gcc48\projects\postgresql\rel\pg9.4w64gcc48edb\lib\postgis-2.2.dll
#8  0x00000001401118e8 in postgres!ExecProject ()

What I find especially troubling about this is that even when I do:

set postgis.backend = geos;

It still goes thru SFCGAL. It's my understanding that functions written in both, the geos/liblwgeom one should be used if geos is backend.

I should add, its not specific to the M I used. If I switch the M's to Z's it crashes there too.

[robe]

I retested this with SFCGAL 1.2.0 (not yet released ) and doesn't crash anymore just errors — so gives this:

NOTICE:  During area_3d(A) :
NOTICE:    with A: MULTIPOLYGON(((0/1 0/1,10/1 0/1,10/1 10/1,0/1 10/1,0/1 0/1),(5/1 5/1,7/1 5/1,7/1 7/1,5/1 7/1,5/1 5/1)))


ERROR:  When converting to 3D - MultiPolygon is invalid : Polygon 0 is invalid: interior ring 0 is oriented in the same direction as exterior ring : MULTIPOLYGON(((0/1 0/1 0/1,10/1 0/1 0/1,10/1 10/1 0/1,0/1 10/1 0/1,0/1 0/1 0/1),(5/1 5/1 0/1,7/1 5/1 0/1,7/1 7/1 0
********** Error **********

ERROR: When converting to 3D - MultiPolygon is invalid : Polygon 0 is invalid: interior ring 0 is oriented in the same direction as exterior ring : MULTIPOLYGON(((0/1 0/1 0/1,10/1 0/1 0/1,10/1 10/1 0/1,0/1 10/1 0/1,0/1 0/1 0/1),(5/1 5/1 0/1,7/1 5/1 0/1,7/1 7/1 0
SQL state: XX000