Re: dub ldc error _d_array_slice_copy

[SrMordred via Digitalmars-d-learn]

On Monday, 18 February 2019 at 23:40:20 UTC, kinke wrote:

On Monday, 18 February 2019 at 19:10:50 UTC, SrMordred wrote:
dub --compiler=ldc2 //app.d:4: error: undefined reference to 
'_d_array_slice_copy'


Dub has nothing to do with it, it's the -betterC flag, and LDC 
expecting that druntime function to be available for slice 
copies. Quick workaround: add a manual version (here without 
any checks) somewhere in your code:


extern(C) void _d_array_slice_copy(void* dst, size_t dstlen, 
void* src, size_t srclen, size_t elemsz)

{
import ldc.intrinsics : llvm_memcpy;
llvm_memcpy!size_t(dst, src, dstlen * elemsz, 0);
}


Thanks, I discovered this workaround too :)

But I dont get it:
-betterC aren't supoused to be D without any druntime?
Why it is searching for this function?

Re: dub ldc error _d_array_slice_copy

[kinke via Digitalmars-d-learn]

On Monday, 18 February 2019 at 19:10:50 UTC, SrMordred wrote:
dub --compiler=ldc2 //app.d:4: error: undefined reference to 
'_d_array_slice_copy'


Dub has nothing to do with it, it's the -betterC flag, and LDC 
expecting that druntime function to be available for slice 
copies. Quick workaround: add a manual version (here without any 
checks) somewhere in your code:


extern(C) void _d_array_slice_copy(void* dst, size_t dstlen, 
void* src, size_t srclen, size_t elemsz)

{
import ldc.intrinsics : llvm_memcpy;
llvm_memcpy!size_t(dst, src, dstlen * elemsz, 0);
}

Re: dub ldc error _d_array_slice_copy

[SrMordred via Digitalmars-d-learn]

On Monday, 18 February 2019 at 19:14:42 UTC, SrMordred wrote:

oh, and:
DUB version 1.13.0, built on Feb 17 2019

LDC - the LLVM D compiler (1.14.0):
  based on DMD v2.084.1 and LLVM 7.0.1


Sorry, both give the same error, the problem is related to 
-betterC flag (which i forgot to add on first compile example), 
but stil..

Re: dub ldc error _d_array_slice_copy

[SrMordred via Digitalmars-d-learn]

oh, and:
DUB version 1.13.0, built on Feb 17 2019

LDC - the LLVM D compiler (1.14.0):
  based on DMD v2.084.1 and LLVM 7.0.1

dub ldc error _d_array_slice_copy

[SrMordred via Digitalmars-d-learn]

On ubuntu:

void test(size_t l)
{
char* a;
a[0 .. l] = a[0 .. l];  
}
extern(C) void main(){
test(0);
}

ldc2 source/app.d //compiles

dub --compiler=ldc2 //app.d:4: error: undefined reference to 
'_d_array_slice_copy'