Unconditionally use REG_EXTENDED

skip.c checks whether REG_EXTENDED is defined -- but this should
always be available, and is used unconditionally in other parts of
gdb.  This patch removes this check, then further simplifies this
code, removing a declaration and a repeated assertion.

2020-10-02  Tom Tromey  <tromey@adacore.com>

	* skip.c (skiplist_entry::skiplist_entry): Unconditionally use
	REG_EXTENDED.

1 files changed, 2 insertions, 8 deletions

diff --git a/gdb/skip.c b/gdb/skip.c
index 419dd7a..e6499d6 100644
--- a/gdb/skip.c
+++ b/gdb/skip.c
@@ -139,14 +139,8 @@ skiplist_entry::skiplist_entry (bool file_is_glob,
   if (m_function_is_regexp)
     {
       gdb_assert (!m_function.empty ());
-
-      int flags = REG_NOSUB;
-#ifdef REG_EXTENDED
-      flags |= REG_EXTENDED;
-#endif
-
-      gdb_assert (!m_function.empty ());
-      m_compiled_function_regexp.emplace (m_function.c_str (), flags,
+      m_compiled_function_regexp.emplace (m_function.c_str (),
+					  REG_NOSUB | REG_EXTENDED,
 					  _("regexp"));
     }
 }