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compiler: support alias to pointer type as receiver in method declaration 

Fixes golang/go#27994.
    
    Reviewed-on: https://go-review.googlesource.com/c/160459

From-SVN: r268450
This commit is contained in:
Ian Lance Taylor 2019-02-01 15:00:46 +00:00
parent 577d65881e
commit 284c00e210
2 changed files with 9 additions and 1 deletions
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2
gcc/go/gofrontend/MERGE
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@ -1,4 +1,4 @@
2206f40fc1e0e1e2ba3eacb7388dd26b72729bde
cbcc538adc5177778da5788d1101e16f106a1514
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.

8
gcc/go/gofrontend/gogo.cc
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@ -2096,12 +2096,20 @@ Gogo::declare_function(const std::string& name, Function_type* type,
// declarations.
Type* rtype = type->receiver()->type();
while (rtype->named_type() != NULL
&& rtype->named_type()->is_alias())
rtype = rtype->named_type()->real_type()->forwarded();
// We want to look through the pointer created by the
// parser, without getting an error if the type is not yet
// defined.
if (rtype->classification() == Type::TYPE_POINTER)
rtype = rtype->points_to();
while (rtype->named_type() != NULL
&& rtype->named_type()->is_alias())
rtype = rtype->named_type()->real_type()->forwarded();
if (rtype->is_error_type())
return NULL;
else if (rtype->named_type() != NULL)