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gccgo: treats 0 as channel #12323

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dvyukov opened this issue Aug 25, 2015 · 2 comments
Closed

gccgo: treats 0 as channel #12323

dvyukov opened this issue Aug 25, 2015 · 2 comments
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Gccgo

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dvyukov commented Aug 25, 2015

gccgo compiles the following incorrect program:

package a
func s() {
    switch <-0 {}
}

gofrontend is on commit 81810917af7ba19e1f9f8efc8b1989f7d6419d30
@dvyukov dvyukov assigned dvyukov and paranoiacblack and unassigned dvyukov Aug 25, 2015
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dvyukov commented Aug 25, 2015

@ianlancetaylor

@ianlancetaylor ianlancetaylor added this to the Gccgo milestone Aug 25, 2015
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CL https://golang.org/cl/13987 mentions this issue.

mydongistiny pushed a commit to mydongistiny/GCC_SaberMod that referenced this issue Sep 17, 2015
compiler: Issue channel type errors earlier.
e429e3b 
    
    When asking for the type of a receive operation, the compiler would
    return an error type if the receive operator was being used on an
    invalid channel type and the error would be reported in a later pass.
    There are several ways that the type checking pass would not see
    the original node and fail to issue the error.  This patch modifies
    receive operations to give an error immediately once it is known that
    the channel type is invalid.
    
    Fixes golang/go#12323.
    
    Reviewed-on: https://go-review.googlesource.com/13987


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227863 138bc75d-0d04-0410-961f-82ee72b054a4
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