RFR(XXS): 8043180: SIGSEGV in Events::log_deopt_message

John Rose john.r.rose at oracle.com
Thu May 15 01:26:16 UTC 2014

On May 14, 2014, at 5:29 PM, Igor Veresov <igor.veresov at oracle.com> wrote:

> Don’t quite know an easy way to that statically, but we can check at runtime:

Sometimes we use a spot-check, as in vmSymbols::initialize or the end of GraphKit::compute_stack_effects.

I suggest a line or two like:
   assert(0 == strcmp("constraint", trap_reason_name(Reason_constraint));
   const char* last_reason_name = "tenured";  // update this if enum DeoptReason changes
   assert(0 == strcmp(last_reason_name, trap_reason_name(Reason_LIMIT - 1));

...in some spot that gets executed at least once but not too often.

— John

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