1180 – the GC failes to handle large allocation requests propperly

Due to the size calculation used in all array length related GC functions 
excessive allocation requests like
long[] l = new long[size_t.max];
allocate "(element_size * element_count) & 0xFFFF_FFFF" bytes and not 
"element_size * element_count" bytes.
Even non-excessive requests like
byte[] b = new byte[size_t.max / 3];
fail with a segfault because bigAlloc uses "assert (0)" instead of 
"_d_OutOfMemory".

Fixed DMD 1.014

int main()
{
	size_t len = size_t.max-100;
	ubyte[] arr = new ubyte[len];
	return 0;
}
Return code: 11 (Segmentation fault)
Tried only on dpaste.

This is unlikely a recent regression, it's already in dmd 2.067.
https://github.com/D-Programming-Language/druntime/pull/1528 

Commit pushed to master at https://github.com/D-Programming-Language/druntime
https://github.com/D-Programming-Language/druntime/commit/6dbe4d82c074561ddb23525b23cd9cf599e4a5ce
Merge pull request #1528 from rainers/fix_1180
Fix Issue 1180 - the GC failes to handle large allocation requests propperly

Commit pushed to stable at https://github.com/dlang/druntime
https://github.com/dlang/druntime/commit/6dbe4d82c074561ddb23525b23cd9cf599e4a5ce
Merge pull request #1528 from rainers/fix_1180

Commit pushed to dmd-cxx at https://github.com/dlang/druntime
https://github.com/dlang/druntime/commit/6dbe4d82c074561ddb23525b23cd9cf599e4a5ce
Merge pull request #1528 from rainers/fix_1180