Created attachment 465750 [details] [diff] [review]
With g++/xlC, alloca exists as a compiler built-in, so in the case where alloca is not already defined, fall back on the built-in. Proper alloca detection should move to autoconf at some point, but since jstracer.cpp is the only usage of it, this at least makes it compile for now.
Created attachment 569266 [details] [diff] [review]
Fix up alloca definition in jstracer to work on AIX/HP-UX.
Revisiting old bugs, rebased patch and cleaned up.
Tracer has been removed.