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cmd/gc: suppress array index error caused by a previously reported error
Fixes #7153 LGTM=rsc R=rsc CC=golang-codereviews https://golang.org/cl/82180043
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@ -2525,8 +2525,9 @@ typecheckcomplit(Node **np)
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typecheck(&l->left, Erv);
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evconst(l->left);
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i = nonnegconst(l->left);
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if(i < 0) {
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if(i < 0 && !l->left->diag) {
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yyerror("array index must be non-negative integer constant");
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l->left->diag = 1;
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i = -(1<<30); // stay negative for a while
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}
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if(i >= 0)
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@ -9,6 +9,6 @@ package main
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var x int
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var a = []int{ x: 1} // ERROR "constant"
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var b = [...]int{ x : 1} // ERROR "constant"
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var b = [...]int{x: 1}
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var c = map[int]int{ x: 1}
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11
test/fixedbugs/issue7153.go
Normal file
11
test/fixedbugs/issue7153.go
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@ -0,0 +1,11 @@
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// errorcheck
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Issue 7153: array invalid index error duplicated on successive bad values
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package p
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var _ = []int{a: true, true} // ERROR "undefined: a" "cannot use true \(type bool\) as type int in array element"
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