FFI: Add tonumber() specialization for failed conversions.

Mike Pall · Mike Pall · commit 02b521981a1a · 2018-04-22T13:27:25.000+02:00
Contributed by Javier Guerra Giraldez.
diff --git a/src/lj_crecord.c b/src/lj_crecord.c
@@ -1661,6 +1661,8 @@ void LJ_FASTCALL lj_crecord_tonumber(jit_State *J, RecordFFData *rd)
       d = ctype_get(cts, CTID_DOUBLE);
     J->base[0] = crec_ct_tv(J, d, 0, J->base[0], &rd->argv[0]);
   } else {
+    /* Specialize to the ctype that couldn't be converted. */
+    argv2cdata(J, J->base[0], &rd->argv[0]);
     J->base[0] = TREF_NIL;
   }
 }

Original file line number	Diff line number	Diff line change
`@@ -1661,6 +1661,8 @@ void LJ_FASTCALL lj_crecord_tonumber(jit_State J, RecordFFData rd)`
`1661`	`1661`	`d = ctype_get(cts, CTID_DOUBLE);`
`1662`	`1662`	`J->base[0] = crec_ct_tv(J, d, 0, J->base[0], &rd->argv[0]);`
`1663`	`1663`	`} else {`
	`1664`	`+ /* Specialize to the ctype that couldn't be converted. */`
	`1665`	`+ argv2cdata(J, J->base[0], &rd->argv[0]);`
`1664`	`1666`	`J->base[0] = TREF_NIL;`
`1665`	`1667`	`}`
`1666`	`1668`	`}`