Hi, Igor!
Thanks for the patch!
LGTM, except for a few nits reagrding the commit message.
 
> 
>>struct GCtrace is defined only if LJ_HASJIT is set. Hence, all spots
>Typo: s/struct GCtrace/`struct GCtrace`
>>where GCtrace is used should be also moved under LJ_HASJIT define.
>Typo: s/should be also/should also be
>>
>>Relates to tarantool/tarantool#8252
>>
>>Signed-off-by: Igor Munkin < imun@tarantool.org >
>>---
>> src/lj_memprof.c | 9 ++++-----
>> src/lj_symtab.c | 13 +++----------
>> src/lj_symtab.h | 2 ++
>> 3 files changed, 9 insertions(+), 15 deletions(-)
>>
>>diff --git a/src/lj_memprof.c b/src/lj_memprof.c
>>index d4a639fd..8cab8204 100644
>>--- a/src/lj_memprof.c
>>+++ b/src/lj_memprof.c
>>@@ -369,6 +369,8 @@ void lj_memprof_add_proto(const struct GCproto *pt)
>>   lj_symtab_dump_proto(&mp->out, pt);
>> }
>> 
>>+#if LJ_HASJIT
>>+
>> void lj_memprof_add_trace(const struct GCtrace *tr)
>> {
>>   struct memprof *mp = &memprof;
>>@@ -380,6 +382,8 @@ void lj_memprof_add_trace(const struct GCtrace *tr)
>>   lj_symtab_dump_trace(&mp->out, tr);
>> }
>> 
>>+#endif /* LJ_HASJIT */
>>+
>> #else /* LJ_HASMEMPROF */
>> 
>> int lj_memprof_start(struct lua_State *L, const struct lj_memprof_options *opt)
>>@@ -401,9 +405,4 @@ void lj_memprof_add_proto(const struct GCproto *pt)
>>   UNUSED(pt);
>> }
>> 
>>-void lj_memprof_add_trace(const struct GCtrace *tr)
>>-{
>>- UNUSED(tr);
>>-}
>>-
>> #endif /* LJ_HASMEMPROF */
>>diff --git a/src/lj_symtab.c b/src/lj_symtab.c
>>index 91ee9a72..54984c05 100644
>>--- a/src/lj_symtab.c
>>+++ b/src/lj_symtab.c
>>@@ -53,16 +53,7 @@ void lj_symtab_dump_trace(struct lj_wbuf *out, const GCtrace *trace)
>>   lj_wbuf_addu64(out, (uint64_t)lineno);
>> }
>> 
>>-#else
>>-
>>-static void lj_symtab_dump_trace(struct lj_wbuf *out, const GCtrace *trace)
>>-{
>>- UNUSED(out);
>>- UNUSED(trace);
>>- lua_assert(0);
>>-}
>>-
>>-#endif
>>+#endif /* LJ_HASJIT */
>> 
>> void lj_symtab_dump_proto(struct lj_wbuf *out, const GCproto *pt)
>> {
>>@@ -491,11 +482,13 @@ void lj_symtab_dump(struct lj_wbuf *out, const struct global_State *g,
>>       lj_symtab_dump_proto(out, pt);
>>       break;
>>     }
>>+#if LJ_HASJIT
>>     case (~LJ_TTRACE): {
>>       lj_wbuf_addbyte(out, SYMTAB_TRACE);
>>       lj_symtab_dump_trace(out, gco2trace(o));
>>       break;
>>     }
>>+#endif /* LJ_HASJIT */
>>     default:
>>       break;
>>     }
>>diff --git a/src/lj_symtab.h b/src/lj_symtab.h
>>index 6faa5cb1..6ec0cd7c 100644
>>--- a/src/lj_symtab.h
>>+++ b/src/lj_symtab.h
>>@@ -60,10 +60,12 @@
>> #define SYMTAB_TRACE ((uint8_t)2)
>> #define SYMTAB_FINAL ((uint8_t)0x80)
>> 
>>+#if LJ_HASJIT
>> /*
>> ** Dumps traceinfo into the symbol table.
>> */
>> void lj_symtab_dump_trace(struct lj_wbuf *out, const GCtrace *trace);
>>+#endif /* LJ_HASJIT */
>> 
>> /*
>> ** Dumps function prototype.
>>--
>>2.30.2
>--
>Best regards,
>Maxim Kokryashkin
>