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compiler: Don't crash when dumping ast of empty block.

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Fixes golang/go#10420.

From-SVN: r224487
This commit is contained in:
Ian Lance Taylor 2015-06-15 17:43:02 +00:00
parent 8e6dce3de7
commit b18fdafbc9
1 changed files with 7 additions and 1 deletions
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6
gcc/go/gofrontend/ast-dump.cc
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@ -65,6 +65,12 @@ class Ast_dump_traverse_statements : public Traverse
int Ast_dump_traverse_blocks_and_functions::block(Block * block)
{
if (block == NULL)
{
this->ast_dump_context_->ostream() << std::endl;
return TRAVERSE_EXIT;
}
this->ast_dump_context_->print_indent();
this->ast_dump_context_->ostream() << "{" << std::endl;
this->ast_dump_context_->indent();