http://d.puremagic.com/issues/show_bug.cgi?id=2717
Summary: alloca(0) leaves stack unaligned on OSX Product: D Version: unspecified Platform: PC OS/Version: Mac OS X Status: NEW Severity: normal Priority: P2 Component: Phobos AssignedTo: bugzi...@digitalmars.com ReportedBy: lio+bugzi...@lunesu.com I don't have a Mac so I can't test whether this actually causes problems, but commit 102 to alloca.d in druntime did not fix the condition alloca(0): it will allocate 4 bytes, instead of 16. The fix would be to move the "jnz; mov" into the version blocks. --