• lili (17/17) Aug 23 2019 Hi:
• kinke (7/8) Aug 24 2019 When running LDC with -vv, you'll see something like this in the

lili <akozhao tencent.com> writes:

Hi:
    I'm writing an OS kernel run in i386 mode.
    where is crash when I implement a std.stdio.write like 
function and pass a long type argument. see code below:

  void printlnA...)(A a)
  {
     foreach(v;a)
     {
     }
  }

  long xr=100;
  println(xr); //crash
  println(100); //ok

  compile with ldc2 -betterC -m32
  then run
  qemu-system-i386 -kernel kernel -serial stdio -m 1024M

  Is where has a bug in implementation.

kinke <noone nowhere.com> writes:

On Saturday, 24 August 2019 at 01:25:46 UTC, lili wrote:
  Is where has a bug in implementation.

When running LDC with -vv, you'll see something like this in the 
very first line:

Targeting 'i686-pc-linux-gnu' (CPU 'pentium4' with features '')

We default to a Pentium 4 for 32-bit x86, and that leads to SSE 
instructions being used (movsd). Use -mcpu to select an older 
CPU, e.g., -mcpu=i386.