[glib: 22/30] build: Drop unnecessary volatile qualifiers from configure tests

[Philip Withnall <pwithnall src gnome org>]

commit daf90bfa99fc02a253d538c65fbaa12f2e6c1c45
Author: Philip Withnall <pwithnall endlessos org>
Date:   Wed Nov 11 19:23:18 2020 +0000

    build: Drop unnecessary volatile qualifiers from configure tests
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>
    
    Helps: #600

 meson.build | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index e0b308a25..ad7f887fb 100644
--- a/meson.build
+++ b/meson.build
@@ -1773,7 +1773,7 @@ endforeach
 # that then to silently fall back on emulated atomic ops just because
 # the user had the wrong build environment.
 atomictest = '''int main() {
-  volatile int atomic = 2;
+  int atomic = 2;
   __sync_bool_compare_and_swap (&atomic, 2, 3);
   return 0;
 }
@@ -1883,6 +1883,7 @@ endif
 
 # FIXME: we should make it print the result and always return 0, so that
 # the output in meson shows up as green
+# volatile is needed here to avoid optimisations in the test
 stack_grows_check_prog = '''
   volatile int *a = 0, *b = 0;
   void f (int i) {