[Bug go/27238] [gcc-11] FAIL: gdb.go/package.exp: setting breakpoint at package2.Foo

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=27238

--- Comment #7 from Tom de Vries <vries at gcc dot gnu.org> ---
With this patch:
...
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 5bbc8e24cf9..c4c3afd0141 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -7142,6 +7142,18 @@ dwarf2_physname (const char *name, struct die_info *die,
struct dwarf2_cu *cu)
       if (cu->language_defn->store_sym_names_in_linkage_form_p ())
        {
          /* Do nothing (do not demangle the symbol name).  */
+         if (cu->lang () == language_go)
+           {
+             char *s;
+             if (startswith (mangled, "go_0"))
+               {
+                 s = strdup (mangled + 1);
+                 s[0] = 'g';
+                 s[1] = 'o';
+                 s[2] = '.';
+                 demangled.reset (s);
+               }
+           }
        }
       else
        {
...
I manage to do:
...
$ gdb -q -batch package -ex "b go.package2.Foo" 
Breakpoint 1 at 0x404228: file package2.go, line 5.
...

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