| We have so far failed to find a good way to determine the stack base. | |
| It is highly recommended that GC_stackbottom be set explicitly on program | |
| startup. The supplied value sometimes causes failure under AIX 4.1, though | |
| it appears to work under 3.X. HEURISTIC2 seems to work under 4.1, but | |
| involves a substantial performance penalty, and will fail if there is | |
| no limit on stack size. | |
| There is no thread support. (I assume recent versions of AIX provide | |
| pthreads? I no longer have access to a machine ...) | |