From cc7bd8e5fff13b7b60e472748bfd4dc407c29bae Mon Sep 17 00:00:00 2001 From: tenderlove Date: Wed, 14 Mar 2018 23:27:10 +0000 Subject: [PATCH] Unconditionally define `TRACE_INSN_P` `TRACE_INSN_P` doesn't need to know about encoded iseqs, it just needs to look at decoded iseqs. We have the decoded iseqs available, so no reason to look at encoded ones. This change allows us to clear `original_iseq` from the iseq struct without any segvs (previously, clearing `original_iseq` would cause the tests to crash). * iseq.c (rb_iseq_trace_set): Only use decoded iseq with `TRACE_INSN_P` git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62750 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- iseq.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/iseq.c b/iseq.c index 52e6d7e900..f9a676b0d8 100644 --- a/iseq.c +++ b/iseq.c @@ -2758,12 +2758,12 @@ rb_iseq_defined_string(enum defined_type type) } +#define TRACE_INSN_P(insn) ((insn) >= VM_INSTRUCTION_SIZE/2) + #if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE #define INSN_CODE(insn) ((VALUE)table[insn]) -#define TRACE_INSN_P(insn, insn_encoded) ((VALUE)table[insn] != insn_encoded) #else #define INSN_CODE(insn) (insn) -#define TRACE_INSN_P(insn, insn_encoded) ((insn_encoded) >= VM_INSTRUCTION_SIZE/2) #endif void @@ -2793,16 +2793,13 @@ rb_iseq_trace_set(const rb_iseq_t *iseq, rb_event_flag_t turnon_events) int insn = (int)code[i]; rb_event_flag_t events = rb_iseq_event_flags(iseq, i); - /* code represents before transformation */ - VM_ASSERT(insn < VM_INSTRUCTION_SIZE/2); - if (events & turnon_events) { - if (!TRACE_INSN_P(insn, iseq_encoded[i])) { + if (!TRACE_INSN_P(insn)) { iseq_encoded[i] = INSN_CODE(insn + VM_INSTRUCTION_SIZE/2); } } - else if (TRACE_INSN_P(insn, iseq_encoded[i])) { - iseq_encoded[i] = INSN_CODE(insn); + else if (TRACE_INSN_P(insn)) { + iseq_encoded[i] = INSN_CODE(insn - VM_INSTRUCTION_SIZE/2); } i += insn_len(insn); }