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process.c: try to workaroun SEGV by r65994

Browse source 
http://ci.rvm.jp/results/trunk-mjit-wait@silicon-docker/1480173

It tries to print C backtrace but fails. And core file on the server
seems to be stopping on the irrelevant place due to its own signal
handler for the dump.

And I failed to reproduce this SEGV on my machine.

I don't know why it's broken, so let me try this change to investigate
the reason of SEGV.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65997 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
k0kubun 2018-11-26 14:45:39 +00:00
parent c8c265f42a
commit 0e6aba22c6
4 changed files with 35 additions and 16 deletions
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2
mjit.h
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@ -66,6 +66,7 @@ RUBY_SYMBOL_EXPORT_END
extern int mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *funcname, struct rb_call_cache *cc_entries, union iseq_inline_storage_entry *is_entries);
extern void mjit_init(struct mjit_options *opts);
extern void mjit_finish(void);
extern void mjit_gc_start_hook(void);
extern void mjit_gc_finish_hook(void);
extern void mjit_free_iseq(const rb_iseq_t *iseq);
@ -131,6 +132,7 @@ void mjit_child_after_fork(void);
#else /* USE_MJIT */
static inline struct mjit_cont *mjit_cont_new(rb_execution_context_t *ec){return NULL;}
static inline void mjit_cont_free(struct mjit_cont *cont){}
static inline void mjit_finish(void){}
static inline void mjit_gc_start_hook(void){}
static inline void mjit_gc_finish_hook(void){}
static inline void mjit_free_iseq(const rb_iseq_t *iseq){}