diff --git a/compiler-rt/lib/tsan/go/buildgo.sh b/compiler-rt/lib/tsan/go/buildgo.sh
--- a/compiler-rt/lib/tsan/go/buildgo.sh
+++ b/compiler-rt/lib/tsan/go/buildgo.sh
@@ -173,6 +173,7 @@
 
 rm -f $DIR/gotsan.cpp
 for F in $SRCS; do
+	echo "#line 1 \"$F\"" >> $DIR/gotsan.cpp
 	cat $F >> $DIR/gotsan.cpp
 done