[PULL 10/14] build: improve -fsanitize-coverage-allowlist check

From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: Alexander Bulekov <alxndr@bu.edu>
Subject: [PULL 10/14] build: improve -fsanitize-coverage-allowlist check
Date: Fri, 24 Jun 2022 10:27:26 +0200	[thread overview]
Message-ID: <20220624082730.246924-11-pbonzini@redhat.com> (raw)
In-Reply-To: <20220624082730.246924-1-pbonzini@redhat.com>

From: Alexander Bulekov <alxndr@bu.edu>

The sancov filter check still fails when unused arguments are treated as
errors. To work around that, add a SanitizerCoverage flag to the
build-check.

Fixes: aa4f3a3b88 ("build: fix check for -fsanitize-coverage-allowlist")
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20220621204507.698711-1-alxndr@bu.edu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 meson.build | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 9efcb175d1..1b255f91ef 100644
--- a/meson.build
+++ b/meson.build
@@ -212,7 +212,8 @@ if get_option('fuzzing')
 
   if cc.compiles('int main () { return 0; }',
                   name: '-fsanitize-coverage-allowlist=/dev/null',
-                 args: ['-fsanitize-coverage-allowlist=/dev/null'] )
+                 args: ['-fsanitize-coverage-allowlist=/dev/null',
+                        '-fsanitize-coverage=trace-pc'] )
     add_global_arguments('-fsanitize-coverage-allowlist=instrumentation-filter',
                          native: false, language: ['c', 'cpp', 'objc'])
   endif
-- 
2.36.1



