Re: [PATCH 0/4] system: Forbid alloca()

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

On 6/6/25 10:37, Peter Maydell wrote:
> On Thu, 5 Jun 2025 at 20:35, Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
>>
>> Eradicate alloca() uses on system code, then enable
>> -Walloca to prevent new ones to creep back in.
>>
>> Philippe Mathieu-Daudé (4):
>>    hw/gpio/pca9552: Avoid using g_newa()
>>    backends/tpmL Avoid using g_alloca()
>>    tests/unit/test-char: Avoid using g_alloca()
>>    buildsys: Prohibit alloca() use on system code
>>
>>   meson.build                 | 4 ++++
>>   backends/tpm/tpm_emulator.c | 4 ++--
>>   hw/gpio/pca9552.c           | 2 +-
>>   tests/unit/test-char.c      | 3 +--
>>   4 files changed, 8 insertions(+), 5 deletions(-)
> 
> There is also a use of alloca() in target/ppc/kvm.c
> in kvmppc_load_htab_chunk(), so I suspect that patch 4
> here will break compilation on PPC hosts with KVM enabled.

Oops sorry I missed that one :/