bugfix: fixed assertion failure "lj_record.c:92: rec_check_slots: Assertion `nslots <= 250' failed" found by stressing our edgelang compiler.

agentzh · kyukhin · commit 5f0a43ace8cf · 2019-05-29T17:23:12.000+03:00
Fixes #4053
diff --git a/src/lj_record.c b/src/lj_record.c
@@ -1858,6 +1858,8 @@ static void rec_varg(jit_State *J, BCReg dst, ptrdiff_t nresults)
       lj_trace_err_info(J, LJ_TRERR_NYIBC);
     }
   }
+  if (J->baseslot + J->maxslot >= LJ_MAX_JSLOTS)
+    lj_trace_err(J, LJ_TRERR_STACKOV);
 }
 
 /* -- Record allocations -------------------------------------------------- */

Original file line number	Diff line number	Diff line change
`@@ -1858,6 +1858,8 @@ static void rec_varg(jit_State *J, BCReg dst, ptrdiff_t nresults)`
`1858`	`1858`	`lj_trace_err_info(J, LJ_TRERR_NYIBC);`
`1859`	`1859`	`}`
`1860`	`1860`	`}`
	`1861`	`+ if (J->baseslot + J->maxslot >= LJ_MAX_JSLOTS)`
	`1862`	`+ lj_trace_err(J, LJ_TRERR_STACKOV);`
`1861`	`1863`	`}`
`1862`	`1864`
`1863`	`1865`	`/* -- Record allocations -------------------------------------------------- */`