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digitalmars.D.learn - dub ldc error _d_array_slice_copy

reply SrMordred <patric.dexheimer gmail.com> writes:
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'
Feb 18
next sibling parent reply SrMordred <patric.dexheimer gmail.com> writes:
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
Feb 18
parent SrMordred <patric.dexheimer gmail.com> writes:
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..
Feb 18
prev sibling parent reply kinke <noone nowhere.com> writes:
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); }
Feb 18
parent SrMordred <patric.dexheimer gmail.com> writes:
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?
Feb 18