Fix IL generation error handling being unreliable

1 files changed, 6 insertions, 14 deletions

diff --git a/cer.go b/cer.go
index 51d9f29..255e453 100644
--- a/cer.go
+++ b/cer.go
@@ -11,17 +11,10 @@ package main
 import (
 	"fmt"
 	"os"
-	"sync"
 )
 
-var wg sync.WaitGroup
-
 func main() {
-	wg.Add(3)
-
-	errs := make(chan error)
-
-	go readErrs(errs)
+	errs := make(chan error, 1)
 
 	toks := make(chan token, 1024)
 	go lex(os.Stdin, toks, errs)
@@ -40,10 +33,9 @@ func main() {
 
 	go generate(<-root, os.Stdout, errs)
 
-	wg.Wait()
-}
-
-func readErrs(errs <-chan error) {
-	fmt.Fprintln(os.Stderr, <-errs)
-	os.Exit(1)
+	err := <-errs
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
 }