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clipka <ano### [at] anonymous org> wrote:
> Am 29.02.2016 um 07:20 schrieb Anthony D. Baye:
>
> > Well, I don't really have time for a rebuild right now, but it says
> > 3.7.0-unofficial when I do povray --version
>
> Now that's a bit older than last August; virtually everything since
> August 2014 identifies as "3.7.X-alpha.XXXXXXX".
>
> > I don't know how you find anything with sparse comments and God functions
> > pushing a thousand lines long plus macros.
>
> Yeah, the inherited stuff isn't ideal, and the parser is the worst part
> of it all.
Rebuilt using the latest master. Bug's still there.
remove the closing paren at line 180 and try rendering. It gives me a segfault.
Regards,
A.D.B.
#version 3.7;
#include "math.inc"
#include "functions.inc"
#include "kolors.inc"
#include "metals.inc"
#include "stones.inc"
#default {
pigment { rgb <0.07,0.37,0.75> }
finish { ambient 0 }
}
/* !- Global Switches -! */
#declare RAD = off ;
#declare PHO = off ;
/* --------------------- */
global_settings {
#if(RAD)
radiosity {
pretrace_start 0.04
pretrace_end 0.005
count 300
nearest_count 10
error_bound 0.110
recursion_limit 2
low_error_factor 0.2
gray_threshold 0.2
minimum_reuse 0.015
brightness 0.618
normal on
adc_bailout 0.01/2
}
#end
#if (PHO)
photons {
count 20000
autostop 0
jitter 0.4
media 50, 30
}
#end
assumed_gamma 1.0
max_trace_level 15
}
light_source { <3.0, 6.0, -7.0> rgb 1 }
camera {
perspective
// location <0.0, 4.0, -5.0>
location <0.0, 5.0, -15.0>
up y
right x*(image_width/image_height)
// look_at <0.0, 3.0, 0.0>
look_at 5*y
// focal_point <0.0, 5.0, 0.0>
// aperture 0.3
// blur_samples 20
}
// curtesy of Tim Atwood
#declare Cast_Metal =
texture {
pigment{Gray05}
normal{facets coords 1 scale 0.1}
finish {
ambient 0.10
brilliance 2
diffuse 0.4
metallic
specular 0.50
roughness 5/60
reflection 0.1
}
scale 0.35
}
// plane { y, 0 pigment { rgb 1 } }
//#include "column.inc"
#declare unit_hex_major =
prism {
linear_spline
0.0, 1.0, 7
#local T = 30;
#while(T <= 390)
<sind(T), cosd(T)>
#local T = T + 60;
#end
}
// A hexagon measuring one unit from the center to the center of each face.
#declare unit_hex_minor =
object { unit_hex_major scale 1/<cosd(30), 1, cosd(30)> }
#declare hex_pig =
pigment {
object { unit_hex_major color Black color Red }
}
#macro ply_header(FMT, VRS, ATH, DSC, VCT)
array[9] {
"ply\r\n",
concat("format " FMT, " ", str(VRS,1,1), " { ascii/binary, format
version number }\r\n"),
concat("comment made by ", ATH, " { comments keyword specified, like all
lines }\r\n"),
concat("comment ", DSC, "\r\n"),
concat("element vertex ", str(VCT, 0,0), " { define \"vertex\"
element, ", str(VCT,0,0), " of them in file }\r\n"),
"property float x { vertex contains float \"x\" coordinate }\r\n",
"property float y { y coordinate is also a vertex property }\r\n",
"property float z { z coordinate, too }\r\n",
"end_header { delimits the end of the header }\r\n"
}
#end
#declare f_sagitta = function(x,y,z,R,P) { 2 * R * pow( sin(pi / (2*P)), 2) }
#declare f_apothem = function(x,y,z,R,P) { R - f_sagitta(x,y,z,R,P) }
#declare f_part_01 = function(x,y,z,R) { R*sin(pi/3 + mod(f_th(x,y,z), pi/3)) }
#declare f_part_02 = function(x,y,z,R) { f_part_01(x,y,z,R) -
f_apothem(x,y,z,R,6) }
#declare r_fun = function(x,y,z,R) { R - f_part_02(x,y,z,R) / sin(pi/3 +
mod(f_th(x,y,z), pi/3)) }
#declare f_hex_face = function { sqrt( x*x + z*z ) - r_fun(x,y,z,1) }
#declare hex_fn = function { pigment { hex_pig } }
#declare p_fn_x = function(x,y,z,O) { x - O }
#macro write_ply(FILENAME, HEADER, DATA)
#fopen pCloudFile FILENAME write
#for(L,0,dimension_size(HEADER,1)-1,1)
#write(pCloudFile, HEADER[L])
#end
#for(P,0,dimension_size(DATA,1)-1,1)
#write(pCloudFile, vstr(3, DATA[P], " ",0,6), "\r\n")
#end
#fclose pCloudFile
#end
#local R0 = 1; // circumradius
#local N = 6;
#local P = 1/5;
#local sagitta = 2 * R0 * pow( sin( pi / (2 * N) ), 2 );
#local apothem = R0 - sagitta; // inradius
#local r = 360 / N;
#local l = 90 - r/2;
#local dS = 0.0625; // S = RT --> T = S/R tf. dT = dS/R
#local pC = 0;
#local heightMax = 10;
#local heightDelta = 0.03125;
#local pointDelta = 3;
#local DStore = array[(360/pointDelta)*(heightMax/heightDelta + 1)]
#local layercount = 0;
//#write(pCloudFile, "0.000000 0.000000 0.000000\r\n")
#for(H,0,heightMax,heightDelta)
union {
#for(T,0,360-pointDelta,pointDelta)
#local p1 = R0*(sind(l + mod(T, r)));
#local p2 = p1 - apothem;
#local R1 = R0 - p2/sind(l + mod(T, r));
#local v0 = vrotate(<R1,H,0>, (T + degrees((H*P*pi)))*y);
sphere { v0 0.015625 }
#local DStore[pC] = v0;
#local pC = pC + 1;
#end
}
#local layercount = layercount + 1;
#end
#debug concat("pC: " str(pC,0,0) "\n")
#debug concat("layers: " str(layercount,0,0) "\n")
#local header = ply_header("ascii", 1.0, "Anthony D. Baye", "A twisted ed
hexagonal column", pC)
#fopen pCloudFile "pointCloud2.ply" write
#for(L,0,dimension_size(header,1)-1,1)
#write(pCloudFile, header[L])
#end
#for(P,0,pC-1,1)
#write(pCloudFile, vstr(3, DStore[P], " ",0,6), "\r\n")
#end
#fclose pCloudFile
#for(A,0,360,60)
cylinder { R0*x, <R0, 10.0, 0.0> 0.015626 pigment { Orange } rotate A*y }
#end
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Le 01/03/2016 11:03, clipka a écrit :
> Am 01.03.2016 um 07:20 schrieb Anthony D. Baye:
>
>> Rebuilt using the latest master. Bug's still there.
>> remove the closing paren at line 180 and try rendering. It gives me a segfault.
>
> The Windows version is well-behaved:
>
> Parse Error: Expected 'string', cylinder found instead
>
> Did I ever mention that I hate it when the Windows version fails to
> exhibit the same bugs as the Unix version?
>
what is line 180 ?
from copy -paste of message, I go to
#local header = ply_header("ascii", 1.0, "Anthony D. Baye", "A twisted ed
hexagonal column", pC)
I presume text get folded and actually the line 180 is:
#write(pCloudFile, vstr(3, DStore[P], " ",0,6), "\r\n")
The segfault is due to a recursive parsing.... consumming 16321 function calls before
giving the problem.
(gdb) where
#0 __GI_____strtod_l_internal (nptr=nptr@entry=0x7f1dfedff3b0 "3",
endptr=endptr@entry=0x7f1dfedff5e8, group=group@entry=0, loc=0x7f1e06a5c500
<_nl_global_locale>) at strtod_l.c:498
#1 0x00007f1e066d2b30 in __GI___strtod_internal (nptr=nptr@entry=0x7f1dfedff3b0 "3",
endptr=endptr@entry=0x7f1dfedff5e8, group=group@entry=0) at strtod.c:54
#2 0x00007f1e066f2fe8 in _IO_vfscanf_internal (s=s@entry=0x7f1dfedff7a0,
format=format@entry=0x6f33a7 "%lf", argptr=argptr@entry=0x7f1dfedff8c8,
errp=errp@entry=0x0) at vfscanf.c:2326
#3 0x00007f1e067085e7 in _IO_vsscanf (string=0x7f1df000535c "3", format=0x6f33a7
"%lf", args=args@entry=0x7f1dfedff8c8) at iovsscanf.c:44
#4 0x00007f1e06702d17 in __sscanf (s=<optimized out>, format=format@entry=0x6f33a7
"%lf") at sscanf.c:32
#5 0x000000000065addc in pov::Parser::Read_Float (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:1237
#6 0x000000000065d6bc in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:570
#7 0x000000000064a29f in pov::Parser::Parse_Num_Factor
(this=this@entry=0x7f1df0004b80, Express=..., Terms=Terms@entry=0x7f1dfedffe3c) at
parser/parser_expressions.cpp:677
#8 0x000000000064c568 in pov::Parser::Parse_Num_Term (this=this@entry=0x7f1df0004b80,
Express=..., Terms=Terms@entry=0x7f1dfedffe3c) at parser/parser_expressions.cpp:1590
#9 0x000000000064cab8 in pov::Parser::Parse_Rel_Factor (this=0x7f1df0004b80,
Express=..., Terms=0x7f1dfedffe3c) at parser/parser_expressions.cpp:1663
#10 0x000000000064dec3 in pov::Parser::Parse_Float (this=this@entry=0x7f1df0004b80) at
parser/parser_expressions.cpp:2049
#11 0x0000000000665996 in pov::Parser::Parse_VStr (this=this@entry=0x7f1df0004b80,
pathname=<optimized out>) at parser/parser_strings.cpp:311
#12 0x000000000066552d in pov::Parser::Parse_String (this=this@entry=0x7f1df0004b80,
pathname=pathname@entry=false, require=require@entry=true) at
parser/parser_strings.cpp:154
#13 0x0000000000665855 in pov::Parser::Parse_C_String (this=this@entry=0x7f1df0004b80,
pathname=pathname@entry=false) at parser/parser_strings.cpp:110
#14 0x0000000000660fe9 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:3816
#15 0x00000000006626ac in pov::Parser::Parse_Directive
(this=this@entry=0x7f1df0004b80, After_Hash=After_Hash@entry=1) at
parser/parser_tokenizer.cpp:2415
#16 0x000000000065db3d in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:451
#17 0x0000000000660ef0 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:3753
#18 0x00000000006626ac in pov::Parser::Parse_Directive
(this=this@entry=0x7f1df0004b80, After_Hash=After_Hash@entry=1) at
parser/parser_tokenizer.cpp:2415
#19 0x000000000065db3d in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:451
#20 0x0000000000660ef0 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:3753
#21 0x00000000006626ac in pov::Parser::Parse_Directive
(this=this@entry=0x7f1df0004b80, After_Hash=After_Hash@entry=1) at
parser/parser_tokenizer.cpp:2415
#22 0x000000000065db3d in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:451
#23 0x0000000000660ef0 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:3753
#24 0x00000000006626ac in pov::Parser::Parse_Directive
(this=this@entry=0x7f1df0004b80, After_Hash=After_Hash@entry=1) at
parser/parser_tokenizer.cpp:2415
#25 0x000000000065db3d in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:451
#26 0x0000000000660ef0 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80) at
parser/parser_tokenizer.cpp:3753
....
....
#16307 0x0000000000660ef0 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80)
at parser/parser_tokenizer.cpp:3753
#16308 0x00000000006626ac in pov::Parser::Parse_Directive
(this=this@entry=0x7f1df0004b80, After_Hash=After_Hash@entry=1) at
parser/parser_tokenizer.cpp:2415
#16309 0x000000000065db3d in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80)
at parser/parser_tokenizer.cpp:451
#16310 0x0000000000660ef0 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80)
at parser/parser_tokenizer.cpp:3753
#16311 0x00000000006626ac in pov::Parser::Parse_Directive
(this=this@entry=0x7f1df0004b80, After_Hash=After_Hash@entry=1) at
parser/parser_tokenizer.cpp:2415
#16312 0x000000000065db3d in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80)
at parser/parser_tokenizer.cpp:451
#16313 0x0000000000660ef0 in pov::Parser::Parse_Write (this=this@entry=0x7f1df0004b80)
at parser/parser_tokenizer.cpp:3753
#16314 0x00000000006626ac in pov::Parser::Parse_Directive
(this=this@entry=0x7f1df0004b80, After_Hash=After_Hash@entry=1) at
parser/parser_tokenizer.cpp:2415
#16315 0x000000000065db3d in pov::Parser::Get_Token (this=this@entry=0x7f1df0004b80)
at parser/parser_tokenizer.cpp:451
#16316 0x0000000000557fd8 in pov::Parser::Parse_Frame (this=0x7f1df0004b80) at
parser/parser.cpp:6728
#16317 0x0000000000558b64 in pov::Parser::Run (this=0x7f1df0004b80) at
parser/parser.cpp:210
#16318 0x00000000005875df in pov::Task::TaskThread (this=0x7f1df0004b80,
completion=...) at backend/support/task.cpp:169
#16319 0x00007f1e0751a801 in thread_proxy () from
/usr/local/lib/libboost_thread.so.1.58.0
#16320 0x00007f1e0824a6aa in start_thread (arg=0x7f1dfeffe700) at pthread_create.c:333
#16321 0x00007f1e0679de9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
The heap is exhausted, and I would say that due to compilation option there is no
check to expand it further at each function call, hence the problem.
pC: 38520
layers: 321
We only need to have a bigger heap (38520 iterations... stacked 16300 call so far, for
about 8150 write, a x6 or x5 would allow to survive too) I guess that's what happening
for Windows, could be interesting to monitor its heap size as parser progress.
NAAAAHHH, Parse_Write should use a pattern already use elsewhere, no more than one
recursion... or even none at all.
ab-using code like
#write( .... #write( ...
is a call for lightning from Zeus and the opening of the multidimensional portal for
Chtulhu. The first to kill the abuser wins. In case of tie, Poseidon can make the life
of perpetrator an hell to which the saga of Ulysse would look like a pleasant walk on
Sunday afternoon.
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