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gccgo: internal compiler error in methods #11579

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dvyukov opened this issue Jul 3, 2015 · 2 comments
Closed

gccgo: internal compiler error in methods #11579

dvyukov opened this issue Jul 3, 2015 · 2 comments
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Gccgo

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@dvyukov
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dvyukov commented Jul 3, 2015

gccgo crashes on the following program:

package a
var _ interface{}
go1: internal compiler error: in methods, at go/gofrontend/types.cc:7076
0x851f41 Interface_type::methods() const
    ../../gcc/go/gofrontend/types.cc:7076
0x7a31eb Gogo::build_interface_method_tables()
    ../../gcc/go/gofrontend/gogo.cc:4316
0x7c68f6 Gogo::build_interface_method_tables()
    ../../gcc/go/gofrontend/gogo.cc:1301
0x7c68f6 Gogo::write_globals()
    ../../gcc/go/gofrontend/gogo.cc:1272

gcc version 6.0.0 2015070 (experimental) (GCC)
@dvyukov
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dvyukov commented Jul 3, 2015

@paranoiacblack

@ianlancetaylor ianlancetaylor added this to the Gccgo milestone Jul 10, 2015
@paranoiacblack paranoiacblack added Suggested Issues that may be good for new contributors looking for work to do. Started labels Jul 10, 2015
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CL https://golang.org/cl/12049 mentions this issue.

vries pushed a commit to vries/gcc that referenced this issue Jul 24, 2015
compiler: Make empty interface types for vars during parse time.
bf65976 
    
    When making the type for a variable with an empty interface type,
    the parser makes an interface type with a NULL method set and relies
    on later passes to correct this.
    
    For sink variables, which are ignored in later passes, the interface
    method table is never finalized and a compile time assertion is issued.
    Instead, the initial type generated by the parser should be the empty
    interface type.
    
    Fixes golang/go#11579.
    
    Reviewed-on: https://go-review.googlesource.com/12049


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@226123 138bc75d-0d04-0410-961f-82ee72b054a4
@golang golang locked and limited conversation to collaborators Aug 5, 2016
asiekierka pushed a commit to WonderfulToolchain/gcc-ia16 that referenced this issue May 16, 2022
compiler: Make empty interface types for vars during parse time.
0f2be73 
    
    When making the type for a variable with an empty interface type,
    the parser makes an interface type with a NULL method set and relies
    on later passes to correct this.
    
    For sink variables, which are ignored in later passes, the interface
    method table is never finalized and a compile time assertion is issued.
    Instead, the initial type generated by the parser should be the empty
    interface type.
    
    Fixes golang/go#11579.
    
    Reviewed-on: https://go-review.googlesource.com/12049

From-SVN: r226123
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