[mapserver-users] Floating point exception agg png

[Daniel Degasperi]

Hi,
I'v encountered following problem with outputformat png (agg driver):

shp2img -m /data/sites/R3-MTB-Public/sito/etc/goldart/mtb.map -l 
"ropeway" -e 667072.437052 5153904.693426 677867.431220 5164699.687594 
-s 1224 1224 -o test-mtb.png -all_debug 1 (i got a FPE)

The debugger backtrace gives me:

Program received signal SIGFPE, Arithmetic exception.
0x00000000004ba89e in 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 >::pixel (this=0x7fffffffc940, p=0x7fffffffc43c, x=82, y=-757)
     at renderers/agg/include/agg_renderer_outline_image.h:173
173                 m_filter->pixel_high_res(m_buf.rows(),
(gdb) bt
#0  0x00000000004ba89e in 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 >::pixel (this=0x7fffffffc940, p=0x7fffffffc43c, x=82, y=-757)
     at renderers/agg/include/agg_renderer_outline_image.h:173
#1  0x00000000004ba8fb in 
mapserver::renderer_outline_image<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8, 
mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> >, 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 > >::pixel (this=0x7fffffffc9e0, p=0x7fffffffc43c, x=82, y=-757)
     at renderers/agg/include/agg_renderer_outline_image.h:860
#2  0x00000000004bafba in 
mapserver::line_interpolator_image<mapserver::renderer_outline_image<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8, 
mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> >, 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 > > >::step_hor (this=0x7fffffffc1c0)
     at renderers/agg/include/agg_renderer_outline_image.h:668
#3  0x00000000004bb27f in 
mapserver::renderer_outline_image<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8, 
mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> >, 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 > >::line3_no_clip (this=0x7fffffffc9e0, lp=..., sx=105681, sy=155778, 
ex=101946, ey=147898)
     at renderers/agg/include/agg_renderer_outline_image.h:931
#4  0x00000000004c99f9 in 
mapserver::renderer_outline_image<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8, 
mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> >, 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 > >::line3 (this=0x7fffffffc9e0, lp=..., sx=105681, sy=155778, 
ex=101946, ey=147898)
     at renderers/agg/include/agg_renderer_outline_image.h:992
#5  0x00000000004cc5b9 in 
mapserver::rasterizer_outline_aa<mapserver::renderer_outline_image<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8, 
mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> >, 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 > >, mapserver::line_coord_sat>::render (this=0x7fffffffc9a0,
     close_polygon=false) at 
renderers/agg/include/agg_rasterizer_outline_aa.h:540
#6  0x00000000004cc9b5 in 
mapserver::rasterizer_outline_aa<mapserver::renderer_outline_image<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8, 
mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> >, 
mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba<mapserver::rgba8> 
 > >, mapserver::line_coord_sat>::add_path<line_adaptor> (
     this=0x7fffffffc9a0, vs=..., path_id=0) at 
renderers/agg/include/agg_rasterizer_outline_aa.h:177
#7  0x00000000004cca3f in 
AGGMapserverRenderer::renderPathPixmapBGRA<line_adaptor> (this=0xf74350, 
line=..., pattern=...) at mapagg.cpp:392
#8  0x00000000004cccea in 
AGGMapserverRenderer::renderPolylineVectorSymbol<line_adaptor, 
mapserver::conv_stroke<mapserver::path_base<mapserver::vertex_block_storage<double, 
8u, 256u> >, mapserver::null_markers> > (this=0xf74350, shape=..., 
symbol=..., tilewidth=0, tileheight=5, color=..., backgroundcolor=...) 
at mapagg.cpp:370
#9  0x00000000004a9b21 in msDrawLineSymbolAGG(._98 *, ._105 *, ._39 *, 
._91 *, double) (symbolset=0x822ae0, image=0x937b30, p=0x7fffffffd310, 
style=0x87e230, scalefactor=1.3333333333333333)
     at mapagg.cpp:1723
#10 0x000000000053d573 in msDrawLineSymbol (symbolset=0x822ae0, 
image=0x937b30, p=0x7fffffffd310, style=0x87e230, 
scalefactor=1.3333333333333333) at maprendering.c:488
#11 0x0000000000485521 in msDrawShape (map=0x822ab0, layer=0x87c820, 
shape=0x7fffffffd310, image=0x937b30, style=0, querymapMode=0) at 
mapdraw.c:1962
#12 0x000000000047fe20 in msDrawVectorLayer (map=0x822ab0, 
layer=0x87c820, image=0x937b30) at mapdraw.c:1032
#13 0x000000000047f32e in msDrawLayer (map=0x822ab0, layer=0x87c820, 
image=0x937b30) at mapdraw.c:822
#14 0x000000000047e1e5 in msDrawMap (map=0x822ab0, querymap=0) at 
mapdraw.c:468
#15 0x0000000000440b32 in main (argc=17, argv=0x7fffffffd848) at 
shp2img.c:292

When I switch to outputformat jpeg (agg driver) everything is fine.

MapServer is 5.6.6 on 64bit CentOS 5.5

Best regards,
Daniel

-- 
Daniel Degasperi R3 GIS Srl - GmbH www.r3-gis.com