On Tue, 24 May 2011 18:02:19 -0400, Adam D. Ruppe
<destructiona...@gmail.com> wrote:
One of my apps, seemingly at random, started crashing today. The
part at fault looked mostly like this:
===
immutable(string[])[] records;
foreach(immutableData; inputSource)
records ~= [immutableData[1], immutableData[0]];
===
Nothing really fancy there except most everything was immutable. It
worked fine for a while. All my attempts to reduce it to a small
test case fail; the code works there too.
But, for some reason, the live code failed.
Looking into a debugger told me the segfault happened on lifetime.d
line 1967 in druntime:
/**
* The old way, obsolete.
*/
extern (C) void* _d_arrayliteralT(TypeInfo ti, size_t length, ...)
{
auto sizeelem = ti.next.tsize(); // array element size
void* result;
It crashes on the array element size line. Neither ti nor ti.next
were null - both appeared to be valid references.
Are you doing anything with dynamic libraries? I think that dynamic
libraries can have their own copies of the typeinfo, which might be
invalid if you unload the library.
I can't think of any other reason why a typeinfo would "go away". There's
always the possibility of memory corruption.
-Steve
