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gccgo: internal compiler error in type_size #11554

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dvyukov opened this issue Jul 3, 2015 · 2 comments
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gccgo: internal compiler error in type_size #11554

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
type e[5][1e10][1e10]*e
go1: internal compiler error: in type_size, at go/go-gcc.cc:1103
0x6074fb Gcc_backend::type_size(Btype*)
    ../../gcc/go/go-gcc.cc:1103
0x674108 Type::backend_type_size(Gogo*, long*)
    ../../gcc/go/gofrontend/types.cc:2526
0x6199f4 Gogo::zero_value(Type*)
    ../../gcc/go/gofrontend/gogo.cc:662
0x677b2e Type::type_descriptor_constructor(Gogo*, int, Named_type*, Methods const*, bool)
    ../../gcc/go/gofrontend/types.cc:2053
0x6796c3 Array_type::array_type_descriptor(Gogo*, Named_type*)
    ../../gcc/go/gofrontend/types.cc:6297
0x67117d Type::make_type_descriptor_var(Gogo*)
    ../../gcc/go/gofrontend/types.cc:1218
0x6714f6 Type::type_descriptor_pointer(Gogo*, Location)
    ../../gcc/go/gofrontend/types.cc:1156
0x6207ad Named_object::get_backend(Gogo*, std::vector<Bexpression*, std::allocator<Bexpression*> >&, std::vector<Btype*, std::allocator<Btype*> >&, std::vector<Bfunction*, std::allocator<Bfunction*> >&)
    ../../gcc/go/gofrontend/gogo.cc:7110
0x626912 Gogo::write_globals()
    ../../gcc/go/gofrontend/gogo.cc:1345

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

@paranoiacblack

This was referenced Jul 3, 2015
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@ianlancetaylor ianlancetaylor added this to the Gccgo milestone Jul 10, 2015
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CL https://golang.org/cl/13684 mentions this issue.

mydongistiny pushed a commit to mydongistiny/GCC_SaberMod that referenced this issue Sep 11, 2015
compiler: Report errors from very large types.
2a305b8 
    
    The gcc backend throws an internal error when trying to get the size
    of a type which is larger than the amount of address space on the
    machine.  This patch catches this error and reports it in a user
    friendly way.
    
    Fixes golang/go#11554.
    
    Reviewed-on: https://go-review.googlesource.com/13684

	* go-gcc.cc (Gcc_backend::type_size): Return -1 for
	unrepresentable size.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227656 138bc75d-0d04-0410-961f-82ee72b054a4
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