• Tiago Gasiba (15/15) Nov 24 2005 I'm not sure if this error has already been posted or not.
• Deewiant (4/22) Nov 24 2005 Confirmed on DMD 0.139, Windows (XP SP2). Gives an "Error: Win32 Excepti...
• Thomas Kuehne (14/26) Nov 26 2005 -----BEGIN PGP SIGNED MESSAGE-----
• Tiago Gasiba (8/17) Nov 28 2005 That is certainly true, but shouldn't there be a much nicer error messag...
• Thomas Kuehne (22/35) Dec 03 2005 -----BEGIN PGP SIGNED MESSAGE-----

Tiago Gasiba <tiago.gasiba gmail.com> writes:

I'm not sure if this error has already been posted or not.
In any case, here it goes:

Compile with DMD 0.139 (Linux) and run the program. It breaks down with SIGSEGV.

<snip>
int main(){
  double[] X;

  X.length = 2147483120;

  return 0;
}
<snip>

Best,
Tiago

-- 
Tiago Gasiba (M.Sc.) - http://www.gasiba.de
Everything should be made as simple as possible, but not simpler.

Deewiant <deewiant.doesnotlike.spam gmail.com> writes:

Tiago Gasiba wrote:
 I'm not sure if this error has already been posted or not.
 In any case, here it goes:
 
 Compile with DMD 0.139 (Linux) and run the program. It breaks down with
SIGSEGV.
 
 <snip>
 int main(){
   double[] X;
 
   X.length = 2147483120;
 
   return 0;
 }
 <snip>
 
 Best,
 Tiago
 

Confirmed on DMD 0.139, Windows (XP SP2). Gives an "Error: Win32 Exception".

The biggest length that still ran succesfully (or, at least, tried to... I
didn't let it finish) was 205496319.

Thomas Kuehne <thomas-dloop kuehne.cn> writes:

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Hash: SHA1

Tiago Gasiba schrieb am 2005-11-24:
 I'm not sure if this error has already been posted or not.
 In any case, here it goes:

 Compile with DMD 0.139 (Linux) and run the program. It breaks down with
SIGSEGV.

<snip>
 int main(){
   double[] X;

   X.length = 2147483120;

   return 0;
 }
<snip>

 Best,
 Tiago

This isn't a bug but a feature of the used system.

Required memory:
17179864964 <- 2147483120 * double.sizeof + size_t.sizeof
2 ^ 34 <- 17179864964

2 ^ 34 bytes on a 32bit system are allways a bit difficult.

Thomas


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Tiago Gasiba <tiago.gasiba gmail.com> writes:

Thomas Kuehne schrieb:

 This isn't a bug but a feature of the used system.
 
 Required memory:
 17179864964 <- 2147483120 * double.sizeof + size_t.sizeof
 2 ^ 34 <- 17179864964
 
 2 ^ 34 bytes on a 32bit system are allways a bit difficult.
 
 Thomas

That is certainly true, but shouldn't there be a much nicer error message?
It is somehow obvious that the program has to break down, but it should report
something like "Not enough memory to execute line xxx" or "Memory exhausted at
line xxx".

Best,
Tiago

-- 
Tiago Gasiba (M.Sc.) - http://www.gasiba.de
Everything should be made as simple as possible, but not simpler.

Thomas Kuehne <thomas-dloop kuehne.cn> writes:

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Hash: SHA1

Tiago Gasiba schrieb am 2005-11-28:
 Thomas Kuehne schrieb:

 This isn't a bug but a feature of the used system.
 
 Required memory:
 17179864964 <- 2147483120 * double.sizeof + size_t.sizeof
 2 ^ 34 <- 17179864964


should have been:
17179864968 <- 2147483120 * double.sizeof + 2 * size_t.sizeof

 2 ^ 34 bytes on a 32bit system are allways a bit difficult.
 
 Thomas

 That is certainly true, but shouldn't there be a much nicer error message?
 It is somehow obvious that the program has to break down, but it should
 report something like "Not enough memory to execute line xxx" or "Memory
 exhausted at line xxx".

To fix this open "dmd/src/phobos/gc/gc.d", add the following check to
_d_new as well as _d_newarrayi and recompile Phobos.











Thomas


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