[Bug python/25261] [dwz-with-cc-m] FAIL: gdb.python/py-symbol.exp: print (len (gdb.lookup_static_symbols ('rr')))

vries at gcc dot gnu.org sourceware-bugzilla@sourceware.org
Mon Dec 9 10:09:00 GMT 2019


https://sourceware.org/bugzilla/show_bug.cgi?id=25261

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
This fixes it:
...
diff --git a/gdb/block.c b/gdb/block.c
index b49c548adc8..899ec053692 100644
--- a/gdb/block.c
+++ b/gdb/block.c
@@ -484,10 +484,12 @@ initialize_block_iterator (const struct block *block,
       return;
     }

+#if 0
   /* If this is an included symtab, find the canonical includer and
      use it instead.  */
   while (cu->user != NULL)
     cu = cu->user;
+#endif

   /* Putting this check here simplifies the logic of the iterator
      functions.  If there are no included symtabs, we only need to
...

Regression testing (not using cc-with-dwz-m) on x86_64 gets us one extra
failure, in an artifical test-case:
...
FAIL: gdb.dwarf2/dwz.exp: p the_int
...
Looking at the test-case itself, I don't see how this code could occur in
reality. Still, it's not bad for gdb to handle this correctly, but I suspect
the current fix is also effective for cases where we don't want that.

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