[PATCH 1/1] regex: fix broken clang build

[Darren Kenny]

The use of variable-length arrays (VLAs) is disabled by default in
clang 9 and above.

The same pragma that works for GCC also works for clang, so check for
clang 9+ too.

Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
---
 lib/regex.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/regex.h b/lib/regex.h
index a7e0bd027570..5295f62a9abf 100644
--- a/lib/regex.h
+++ b/lib/regex.h
@@ -531,7 +531,8 @@ typedef struct
 # endif
 #endif
 
-#if defined __GNUC__ && 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+#if (defined __GNUC__ && 4 < __GNUC__ + (6 <= __GNUC_MINOR__)) \
+     || __clang_major__ >= 9
 # pragma GCC diagnostic push
 # pragma GCC diagnostic ignored "-Wvla"
 #endif
@@ -688,7 +689,8 @@ extern size_t regerror (int __errcode, const regex_t 
*_Restrict_ __preg,
 
 extern void regfree (regex_t *__preg);
 
-#if defined __GNUC__ && 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+#if (defined __GNUC__ && 4 < __GNUC__ + (6 <= __GNUC_MINOR__)) \
+     || __clang_major__ >= 9
 # pragma GCC diagnostic pop
 #endif
 
-- 
2.31.1