* Go patch committed: Fix parsing of send clauses with composite literals
@ 2014-12-16 18:58 Ian Lance Taylor
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From: Ian Lance Taylor @ 2014-12-16 18:58 UTC (permalink / raw)
To: gcc-patches, gofrontend-dev
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PR 61273 points out that "for ; false; c <- false {" doesn't parse
correctly. It's because the "false {" is incorrectly interpreted as
being a potential composite literal. This patch from Chris Manghane
fixes the parsing bug. Bootstrapped and ran Go testsuite on
x86_64-unknown-linux-gnu. Committed to mainline.
Ian
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diff -r 670705a1c9cc go/parse.cc
--- a/go/parse.cc Mon Dec 15 12:17:08 2014 -0800
+++ b/go/parse.cc Tue Dec 16 10:50:34 2014 -0800
@@ -3819,7 +3819,7 @@
token = this->peek_token();
if (token->is_op(OPERATOR_CHANOP))
{
- this->send_stmt(this->verify_not_sink(exp));
+ this->send_stmt(this->verify_not_sink(exp), may_be_composite_lit);
if (return_exp != NULL)
*return_exp = true;
}
@@ -3913,13 +3913,13 @@
// Channel = Expression .
void
-Parse::send_stmt(Expression* channel)
+Parse::send_stmt(Expression* channel, bool may_be_composite_lit)
{
go_assert(this->peek_token()->is_op(OPERATOR_CHANOP));
Location loc = this->location();
this->advance_token();
- Expression* val = this->expression(PRECEDENCE_NORMAL, false, true, NULL,
- NULL);
+ Expression* val = this->expression(PRECEDENCE_NORMAL, false,
+ may_be_composite_lit, NULL, NULL);
Statement* s = Statement::make_send_statement(channel, val, loc);
this->gogo_->add_statement(s);
}
diff -r 670705a1c9cc go/parse.h
--- a/go/parse.h Mon Dec 15 12:17:08 2014 -0800
+++ b/go/parse.h Tue Dec 16 10:50:34 2014 -0800
@@ -245,7 +245,7 @@
void statement_list();
bool statement_list_may_start_here();
void expression_stat(Expression*);
- void send_stmt(Expression*);
+ void send_stmt(Expression*, bool may_be_composite_lit);
void inc_dec_stat(Expression*);
void assignment(Expression*, bool may_be_composite_lit, Range_clause*);
void tuple_assignment(Expression_list*, bool may_be_composite_lit,
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2014-12-16 18:58 Go patch committed: Fix parsing of send clauses with composite literals Ian Lance Taylor
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