parser: fix empty generic type list may cause crash

mertcandav · mertcandav · commit cb4fe52ad8c1 · 2026-02-10T15:08:25.000+03:00
diff --git a/std/jule/parser/expr.jule b/std/jule/parser/expr.jule
@@ -133,6 +133,10 @@ impl exprBuilder {
 		}
 		mut rbrack := self.t
 		self.expect(token::RBRACK, "expected ]")
+		if len(list) == 0 {
+			self.pushErr(lbrack, "expected type for generic instance")
+			ret nil
+		}
 		ret packIndexExpr(typ, lbrack, list, rbrack)
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -133,6 +133,10 @@ impl exprBuilder {`
`133`	`133`	`}`
`134`	`134`	`mut rbrack := self.t`
`135`	`135`	`self.expect(token::RBRACK, "expected ]")`
	`136`	`+ if len(list) == 0 {`
	`137`	`+ self.pushErr(lbrack, "expected type for generic instance")`
	`138`	`+ ret nil`
	`139`	`+ }`
`136`	`140`	`ret packIndexExpr(typ, lbrack, list, rbrack)`
`137`	`141`	`}`
`138`	`142`