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PR c++/85580 - extern "C" and local variables

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* name-lookup.c (check_extern_c_conflict): Ignore local decls.

From-SVN: r259793
This commit is contained in:
Jason Merrill 2018-05-01 08:45:49 -04:00 • committed by Jason Merrill
parent 879bdafad2
commit 38dff92114
3 changed files with 29 additions and 0 deletions
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3
gcc/cp/ChangeLog
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@ -1,5 +1,8 @@
2018-04-30 Jason Merrill <jason@redhat.com>
PR c++/85580 - extern "C" and local variables
* name-lookup.c (check_extern_c_conflict): Ignore local decls.
PR c++/84701 - unsigned typeof.
* decl.c (grokdeclarator): Overhaul diagnostics for invalid use
of long/short/signed/unsigned.

4
gcc/cp/name-lookup.c
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@ -2527,6 +2527,10 @@ check_extern_c_conflict (tree decl)
if (DECL_ARTIFICIAL (decl) || DECL_IN_SYSTEM_HEADER (decl))
return;
/* This only applies to decls at namespace scope. */
if (!DECL_NAMESPACE_SCOPE_P (decl))
return;
if (!extern_c_decls)
extern_c_decls = hash_table<named_decl_hash>::create_ggc (127);

22
gcc/testsuite/g++.dg/parse/extern-C-2.C Normal file
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@ -0,0 +1,22 @@
// PR c++/85580
extern "C"
{
void f1()
{
union some_type{
char a[2];
int b;
} variable;
}
void f2()
{
union some_type{
char a[2];
int b;
} variable;
}
}