tor

commit 5823e62fa2a83fb1f7a27c82be930749e3a4782d
parent 9ae35975402a823a420cd5efb81a1c3a76f6c4d6
Author: Nick Mathewson <nickm@torproject.org>
Date:   Mon, 30 Jul 2018 08:17:25 -0400

Merge branch 'maint-0.3.4'

Diffstat:
A
changes/bug26785
 | 
4
++++
M
configure.ac
 | 
3
+++
M
src/lib/compress/compress_zstd.c
 | 
4
++++

3 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/changes/bug26785 b/changes/bug26785
@@ -0,0 +1,4 @@
+  o Minor bugfixes (compilation, portability):
+    - Don't try to use a pragma to temporarily disable
+      -Wunused-const-variable if the compiler doesn't support it.
+      Fixes bug 26785; bugfix on 0.3.2.11.
diff --git a/configure.ac b/configure.ac
@@ -2253,6 +2253,9 @@ dnl     -Wthread-safety-precise
   if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
     AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
   fi
+  if test "$tor_cv_cflags__warn_unused_const_variable_2" = "yes"; then
+    AC_DEFINE([HAVE_CFLAG_WUNUSED_CONST_VARIABLE], 1, [True if we have -Wunused-const-variable])
+  fi
 
   if test "x$enable_fatal_warnings" = "xyes"; then
     # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
diff --git a/src/lib/compress/compress_zstd.c b/src/lib/compress/compress_zstd.c
@@ -28,10 +28,14 @@
 #endif
 
 #ifdef HAVE_ZSTD
+#ifdef HAVE_CFLAG_WUNUSED_CONST_VARIABLE
 DISABLE_GCC_WARNING(unused-const-variable)
+#endif
 #include <zstd.h>
+#ifdef HAVE_CFLAG_WUNUSED_CONST_VARIABLE
 ENABLE_GCC_WARNING(unused-const-variable)
 #endif
+#endif
 
 /** Total number of bytes allocated for Zstandard state. */
 static atomic_counter_t total_zstd_allocation;