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X-Received-From: 2607:f8b0:400d:c09::243 Subject: [Qemu-devel] [PATCH for 2.10 03/35] thunk: check nb_fields is valid before continuing X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-trivial@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 thunk.c:91:32: warning: Call to 'malloc' has an allocation size of 0 bytes se->field_offsets[i] =3D malloc(nb_fields * sizeof(int)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reported-by: Clang Static Analyzer Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- thunk.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/thunk.c b/thunk.c index 2dac36666d..d1c5e221f5 100644 --- a/thunk.c +++ b/thunk.c @@ -67,7 +67,6 @@ void thunk_register_struct(int id, const char *name, cons= t argtype *types) int nb_fields, offset, max_align, align, size, i, j; =20 assert(id < max_struct_entries); - se =3D struct_entries + id; =20 /* first we count the number of fields */ type_ptr =3D types; @@ -76,6 +75,10 @@ void thunk_register_struct(int id, const char *name, con= st argtype *types) type_ptr =3D thunk_type_next(type_ptr); nb_fields++; } + if (!nb_fields) { + return; + } + se =3D struct_entries + id; se->field_types =3D types; se->nb_fields =3D nb_fields; se->name =3D name; --=20 2.13.3