Ticket is entitled:
"panic: top_env when localizing a lexical variable in qr{(?{...})}"
but a better description would be:
"(?{...}) does not catch yyparse() exceptions in regex compilation"
Changes Perl_sv_compile_2op() to tell doeval() that it must use
S_try_yyparse() to catch any exception that yyparse() may throw.
int runtime;
CV* runcv = NULL; /* initialise to avoid compiler warnings */
STRLEN len;
+ bool need_catch;
PERL_ARGS_ASSERT_SV_COMPILE_2OP;
PL_op->op_flags = 0; /* Avoid uninit warning. */
PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP);
PUSHEVAL(cx, 0);
+ need_catch = CATCH_GET;
+ CATCH_SET(TRUE);
if (runtime)
(void) doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq);
else
(void) doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax);
+ CATCH_SET(need_catch);
POPBLOCK(cx,PL_curpm);
POPEVAL(cx);