alloca and (2^15)*5

In 21.4.10 and 21.4.11, trying to reply to Paul Krause's report, I got a crash in regex.c. For some reason when the number of failures gets "big" (I'm not sure how big that is, I've not yet been able to watch the crash in gdb), the local variable this_reg in PUSH_FAILURE_POINT gets overwritten with (it seems) the value of the (static) global variable fail_stack.size. So it looks like glibc's (2.3.1) alloca doesn't fail nicely? Or maybe GCC (2.95.4) is screwing up? Compiling with -DREGEX_MALLOC "fixes". -- Institute of Policy and Planning Sciences http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Economics of Information Communication and Computation Systems Experimental Economics, Microeconomic Theory, Game Theory