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go/types: don't skip checking of RangeStmt.Body because of errors in loop vars #10148

alandonovan opened this issue Mar 12, 2015 · 1 comment


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Type checking doesn't enter the body of the third loop because the range operand has the wrong type and the var y was declared with := not assigned with =. It should probably try harder; e.g., declare the variable y with type Invalid. (See also Google internal bug #19639588.)

package main

func main() {
for y := range "" {
_ = "" + 1 // type error => body was type-checked
for range 1 {
_ = "" + 1 // type error => body was type-checked
for y := range 1 {
_ = "" + 1 // no type error => body not type-checked

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This issue was closed by golang/tools@e4a1c78 .

@golang golang locked and limited conversation to collaborators Jun 25, 2016
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