configure: Check for GCC diagnostic pragma support inside of functions

The actual usage of the pragma is within functions and older versions
of gcc only support the pragma outside of functions.

1 files changed, 1 insertions, 2 deletions

diff --git a/configure b/configure
index 979cc60..dadc4ba 100755
--- a/configure
+++ b/configure
@@ -3395,8 +3395,7 @@ EOF
 done
 
 check_cc <<EOF && enable pragma_deprecated
-_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
-_Pragma("GCC diagnostic warning \"-Wdeprecated-declarations\"")
+void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
 EOF
 
 check_cc <<EOF && enable attribute_packed