libbacktrace patch committed: Mark state unused in ztest.c test_large

[Ian Lance Taylor via Gcc-patches]

This libbacktrace patch marks the state parameter of test_large in
ztest.c as ATTRIBUTE_UNUSED.  The parameter is not used if HAVE_ZLIB
is not defined.  Bootstrapped and ran libbacktrace tests on
x86_64-pc-linux-gnu.  Committed to mainline.

Ian

2020-05-13  Ian Lance Taylor  <i...@golang.org>

* ztest.c (test_large): Mark state ATTRIBUTE_UNUSED.

diff --git a/libbacktrace/ztest.c b/libbacktrace/ztest.c
index 2663c90061a..39476704972 100644
--- a/libbacktrace/ztest.c
+++ b/libbacktrace/ztest.c
@@ -294,7 +294,7 @@ average_time (const size_t *times, size_t trials)
 /* Test a larger text, if available.  */
 
 static void
-test_large (struct backtrace_state *state)
+test_large (struct backtrace_state *state ATTRIBUTE_UNUSED)
 {
 #ifdef HAVE_ZLIB
   unsigned char *orig_buf;