[gcc r10-10557] libstdc++: Add another non-reserved name to tests

[Jonathan Wakely]

https://gcc.gnu.org/g:00f1e01f9d47f7bdcc24aa11858ae629442a7afa

commit r10-10557-g00f1e01f9d47f7bdcc24aa11858ae629442a7afa
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Aug 25 23:19:25 2021 +0100

    libstdc++: Add another non-reserved name to tests
    
    Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/17_intro/names.cc: Check 'sz'.
    
    (cherry picked from commit ea5674687ac45fe7242c57220b699337899881f0)

Diff:
---
 libstdc++-v3/testsuite/17_intro/names.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libstdc++-v3/testsuite/17_intro/names.cc b/libstdc++-v3/testsuite/17_intro/names.cc
index 2c8bfff26e1..7d3960e3843 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -106,6 +106,7 @@
 #define z (
 
 #define tmp (
+#define sz (
 
 #if __cplusplus < 201103L
 #define uses_allocator  (