compiler: improve error messages for expected curly brace For golang/go#17328 Change-Id: Id0c153e76de2db5d15e768823d67646a4bde0e23 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273890 Trust: Ian Lance Taylor <iant@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>

diff --git a/go/parse.cc b/go/parse.cc
index 1dac002..c9a5485 100644
--- a/go/parse.cc
+++ b/go/parse.cc

@@ -4422,7 +4422,7 @@
     {
       Location semi_loc = this->location();
       if (this->advance_token()->is_op(OPERATOR_LCURLY))
-	go_error_at(semi_loc, "missing %<{%> after if clause");
+	go_error_at(semi_loc, "unexpected semicolon or newline, expecting %<{%> after if clause");
       // Otherwise we will get an error when we call this->block
       // below.
     }
@@ -5359,7 +5359,7 @@
     {
       Location semi_loc = this->location();
       if (this->advance_token()->is_op(OPERATOR_LCURLY))
-	go_error_at(semi_loc, "missing %<{%> after for clause");
+	go_error_at(semi_loc, "unexpected semicolon or newline, expecting %<{%> after for clause");
       // Otherwise we will get an error when we call this->block
       // below.
     }
@@ -5430,7 +5430,7 @@
     *cond = NULL;
   else if (this->peek_token()->is_op(OPERATOR_LCURLY))
     {
-      go_error_at(this->location(), "missing %<{%> after for clause");
+      go_error_at(this->location(), "unexpected semicolon or newline, expecting %<{%> after for clause");
       *cond = NULL;
       *post = NULL;
       return;