https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64198
Bug ID: 64198
Summary: ICE in gofrontend
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: vogt at linux dot vnet.ibm.com
CC: cmang at google dot com
This test program genererates an ICE with the current gccgo HEAD:
-- snip --
package main
func main() {
var x int = 0
println(x++)
}
-- snip --
==>
$ gccgo foo.go
foo.go:4:18: error: missing ‘)’
println(x++)
^
foo.go:4:20: error: expected ‘;’ or ‘}’ or newline
println(x++)
^
foo.go:4:9: error: invalid left hand side of assignment
println(x++)
^
foo.go:4:9: error: expected integer, floating, complex, or string type
go1: internal compiler error: in set_type, at
go/gofrontend/expressions.cc:15374
0x801a5dc9 Numeric_constant::set_type(Type*, bool, Location)
../../gcc/go/gofrontend/expressions.cc:15374
0x801a5dc9 Integer_expression::do_check_types(Gogo*)
../../gcc/go/gofrontend/expressions.cc:1898
0x801cea8f Expression::check_types(Gogo*)
../../gcc/go/gofrontend/expressions.h:717
0x801cea8f Check_types_traverse::expression(Expression**)
../../gcc/go/gofrontend/gogo.cc:3094
0x8018d341 Expression::traverse(Expression**, Traverse*)
../../gcc/go/gofrontend/expressions.cc:43
0x8018d341 Binary_expression::do_traverse(Traverse*)
../../gcc/go/gofrontend/expressions.cc:4304
0x801d4203 Block::traverse(Traverse*)
../../gcc/go/gofrontend/gogo.cc:5552
0x801d454d Function::traverse(Traverse*)
../../gcc/go/gofrontend/gogo.cc:4707
0x801da7d3 Bindings::traverse(Traverse*, bool)
../../gcc/go/gofrontend/gogo.cc:7316
0x801db1cb Gogo::traverse(Traverse*)
../../gcc/go/gofrontend/gogo.cc:2353
0x801db1cb Gogo::check_types()
../../gcc/go/gofrontend/gogo.cc:3104
0x801ce767 go_parse_input_files(char const**, unsigned int, bool, bool)
../../gcc/go/gofrontend/go.cc:107
--
Looks like the gofrontend cannot handle the ++ for call arguments (I don't know
whether Go allows that, but the compiler shouldn't crash anyway). If the ++ is
placed in a separate statement after the call, the crash goes away.
