From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: qemu-ppc@nongnu.org, "Paolo Bonzini" <pbonzini@redhat.com>,
qemu-arm@nongnu.org, "Glenn Miles" <milesg@linux.ibm.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Stefan Berger" <stefanb@linux.vnet.ibm.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Daniel P . Berrangé" <berrange@redhat.com>
Subject: [RFC PATCH 4/4] buildsys: Prohibit alloca() use on system code
Date: Thu, 5 Jun 2025 21:35:40 +0200 [thread overview]
Message-ID: <20250605193540.59874-5-philmd@linaro.org> (raw)
In-Reply-To: <20250605193540.59874-1-philmd@linaro.org>
Similarly to commit 64c1a544352 ("meson: Enable -Wvla") with
variable length arrays, forbid alloca() uses on system code.
There are few uses on ancient linux-user code, do not bother
there.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
meson.build | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/meson.build b/meson.build
index ef994676fe9..8c6ccb03c71 100644
--- a/meson.build
+++ b/meson.build
@@ -774,6 +774,10 @@ if host_os != 'darwin'
endif
endif
+if have_system
+ warn_flags += ['-Walloca']
+endif
+
# Set up C++ compiler flags
qemu_cxxflags = []
if 'cpp' in all_languages
--
2.49.0
next prev parent reply other threads:[~2025-06-05 19:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-05 19:35 [PATCH 0/4] system: Forbid alloca() Philippe Mathieu-Daudé
2025-06-05 19:35 ` [PATCH 1/4] hw/gpio/pca9552: Avoid using g_newa() Philippe Mathieu-Daudé
2025-06-05 21:03 ` Miles Glenn
2025-06-05 19:35 ` [PATCH 2/4] backends/tpmL Avoid using g_alloca() Philippe Mathieu-Daudé
2025-06-05 21:23 ` BALATON Zoltan
2025-06-06 7:00 ` Philippe Mathieu-Daudé
2025-06-06 8:14 ` Thomas Huth
2025-06-08 19:09 ` Stefan Berger
2025-06-08 19:07 ` Stefan Berger
2025-06-05 19:35 ` [PATCH 3/4] tests/unit/test-char: " Philippe Mathieu-Daudé
2025-06-05 20:53 ` Pierrick Bouvier
2025-06-06 6:09 ` Philippe Mathieu-Daudé
2025-06-06 16:18 ` Pierrick Bouvier
2025-06-05 19:35 ` Philippe Mathieu-Daudé [this message]
2025-06-05 20:53 ` [PATCH 0/4] system: Forbid alloca() Pierrick Bouvier
2025-06-06 8:37 ` Peter Maydell
2025-06-06 8:53 ` Philippe Mathieu-Daudé
2025-06-06 8:44 ` Alex Bennée
2025-06-09 13:46 ` Stefan Hajnoczi
2025-06-10 9:29 ` Philippe Mathieu-Daudé
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