[PATCH] tests: bios-tables-test: replace memset with initializer

[Paolo Bonzini]

Coverity complains that memset() writes over a const field.  Use
an initializer instead, so that the const field is left to zero.
Tests that have to write the const field already use an initializer
for the whole struct, here I am choosing the smallest possible
patch (which is not that small already).

Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 tests/qtest/bios-tables-test.c | 123 ++++++++++++---------------------
 1 file changed, 43 insertions(+), 80 deletions(-)

diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
index 873358943784..464f87382e23 100644
--- a/tests/qtest/bios-tables-test.c
+++ b/tests/qtest/bios-tables-test.c
@@ -438,10 +438,9 @@ static void test_acpi_asl(test_data *data)
 {
     int i;
     AcpiSdtTable *sdt, *exp_sdt;
-    test_data exp_data;
+    test_data exp_data = {};
     gboolean exp_err, err, all_tables_match = true;
 
-    memset(&exp_data, 0, sizeof(exp_data));
     exp_data.tables = load_expected_aml(data);
     dump_aml_files(data, false);
     for (i = 0; i < data->tables->len; ++i) {
@@ -853,12 +852,11 @@ static uint8_t base_required_struct_types[] = {
 
 static void test_acpi_piix4_tcg(void)
 {
-    test_data data;
+    test_data data = {};
 
     /* Supplying -machine accel argument overrides the default (qtest).
      * This is to make guest actually run.
      */
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.required_struct_types = base_required_struct_types;
     data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
@@ -868,9 +866,8 @@ static void test_acpi_piix4_tcg(void)
 
 static void test_acpi_piix4_tcg_bridge(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".bridge";
     data.required_struct_types = base_required_struct_types;
@@ -906,9 +903,8 @@ static void test_acpi_piix4_tcg_bridge(void)
 
 static void test_acpi_piix4_no_root_hotplug(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".roothp";
     data.required_struct_types = base_required_struct_types;
@@ -923,9 +919,8 @@ static void test_acpi_piix4_no_root_hotplug(void)
 
 static void test_acpi_piix4_no_bridge_hotplug(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".hpbridge";
     data.required_struct_types = base_required_struct_types;
@@ -940,9 +935,8 @@ static void test_acpi_piix4_no_bridge_hotplug(void)
 
 static void test_acpi_piix4_no_acpi_pci_hotplug(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".hpbrroot";
     data.required_struct_types = base_required_struct_types;
@@ -962,9 +956,8 @@ static void test_acpi_piix4_no_acpi_pci_hotplug(void)
 
 static void test_acpi_q35_tcg(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.required_struct_types = base_required_struct_types;
     data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
@@ -994,9 +987,8 @@ static void test_acpi_q35_tcg_core_count2(void)
 
 static void test_acpi_q35_tcg_bridge(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".bridge";
     data.required_struct_types = base_required_struct_types;
@@ -1009,9 +1001,8 @@ static void test_acpi_q35_tcg_bridge(void)
 
 static void test_acpi_q35_tcg_no_acpi_hotplug(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".noacpihp";
     data.required_struct_types = base_required_struct_types;
@@ -1105,9 +1096,8 @@ static void test_acpi_q35_tcg_mmio64(void)
 
 static void test_acpi_piix4_tcg_cphp(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".cphp";
     test_acpi_one("-smp 2,cores=3,sockets=2,maxcpus=6"
@@ -1121,9 +1111,8 @@ static void test_acpi_piix4_tcg_cphp(void)
 
 static void test_acpi_q35_tcg_cphp(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".cphp";
     test_acpi_one(" -smp 2,cores=3,sockets=2,maxcpus=6"
@@ -1141,9 +1130,8 @@ static uint8_t ipmi_required_struct_types[] = {
 
 static void test_acpi_q35_tcg_ipmi(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".ipmibt";
     data.required_struct_types = ipmi_required_struct_types;
@@ -1156,9 +1144,8 @@ static void test_acpi_q35_tcg_ipmi(void)
 
 static void test_acpi_q35_tcg_smbus_ipmi(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".ipmismbus";
     data.required_struct_types = ipmi_required_struct_types;
@@ -1171,12 +1158,11 @@ static void test_acpi_q35_tcg_smbus_ipmi(void)
 
 static void test_acpi_piix4_tcg_ipmi(void)
 {
-    test_data data;
+    test_data data = {};
 
     /* Supplying -machine accel argument overrides the default (qtest).
      * This is to make guest actually run.
      */
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".ipmikcs";
     data.required_struct_types = ipmi_required_struct_types;
@@ -1189,9 +1175,8 @@ static void test_acpi_piix4_tcg_ipmi(void)
 
 static void test_acpi_q35_tcg_memhp(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".memhp";
     test_acpi_one(" -m 128,slots=3,maxmem=1G"
@@ -1205,9 +1190,8 @@ static void test_acpi_q35_tcg_memhp(void)
 
 static void test_acpi_piix4_tcg_memhp(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".memhp";
     test_acpi_one(" -m 128,slots=3,maxmem=1G"
@@ -1221,9 +1205,8 @@ static void test_acpi_piix4_tcg_memhp(void)
 
 static void test_acpi_piix4_tcg_nosmm(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".nosmm";
     test_acpi_one("-machine smm=off", &data);
@@ -1232,9 +1215,8 @@ static void test_acpi_piix4_tcg_nosmm(void)
 
 static void test_acpi_piix4_tcg_smm_compat(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".smm-compat";
     test_acpi_one("-global PIIX4_PM.smm-compat=on", &data);
@@ -1243,9 +1225,8 @@ static void test_acpi_piix4_tcg_smm_compat(void)
 
 static void test_acpi_piix4_tcg_smm_compat_nosmm(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".smm-compat-nosmm";
     test_acpi_one("-global PIIX4_PM.smm-compat=on -machine smm=off", &data);
@@ -1254,9 +1235,8 @@ static void test_acpi_piix4_tcg_smm_compat_nosmm(void)
 
 static void test_acpi_piix4_tcg_nohpet(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.machine_param = ",hpet=off";
     data.variant = ".nohpet";
@@ -1266,9 +1246,8 @@ static void test_acpi_piix4_tcg_nohpet(void)
 
 static void test_acpi_q35_tcg_numamem(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".numamem";
     test_acpi_one(" -object memory-backend-ram,id=ram0,size=128M"
@@ -1278,9 +1257,8 @@ static void test_acpi_q35_tcg_numamem(void)
 
 static void test_acpi_q35_kvm_xapic(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".xapic";
     test_acpi_one(" -object memory-backend-ram,id=ram0,size=128M"
@@ -1291,9 +1269,8 @@ static void test_acpi_q35_kvm_xapic(void)
 
 static void test_acpi_q35_tcg_nosmm(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".nosmm";
     test_acpi_one("-machine smm=off", &data);
@@ -1302,9 +1279,8 @@ static void test_acpi_q35_tcg_nosmm(void)
 
 static void test_acpi_q35_tcg_smm_compat(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".smm-compat";
     test_acpi_one("-global ICH9-LPC.smm-compat=on", &data);
@@ -1313,9 +1289,8 @@ static void test_acpi_q35_tcg_smm_compat(void)
 
 static void test_acpi_q35_tcg_smm_compat_nosmm(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".smm-compat-nosmm";
     test_acpi_one("-global ICH9-LPC.smm-compat=on -machine smm=off", &data);
@@ -1324,9 +1299,8 @@ static void test_acpi_q35_tcg_smm_compat_nosmm(void)
 
 static void test_acpi_q35_tcg_nohpet(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.machine_param = ",hpet=off";
     data.variant = ".nohpet";
@@ -1336,9 +1310,8 @@ static void test_acpi_q35_tcg_nohpet(void)
 
 static void test_acpi_q35_kvm_dmar(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".dmar";
     test_acpi_one("-machine kernel-irqchip=split -accel kvm"
@@ -1348,9 +1321,8 @@ static void test_acpi_q35_kvm_dmar(void)
 
 static void test_acpi_q35_tcg_ivrs(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".ivrs";
     data.tcg_only = true,
@@ -1360,9 +1332,8 @@ static void test_acpi_q35_tcg_ivrs(void)
 
 static void test_acpi_piix4_tcg_numamem(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.variant = ".numamem";
     test_acpi_one(" -object memory-backend-ram,id=ram0,size=128M"
@@ -1379,7 +1350,7 @@ static void test_acpi_tcg_tpm(const char *machine, const 
char *tpm_if,
                                           machine, tpm_if);
     char *tmp_path = g_dir_make_tmp(tmp_dir_name, NULL);
     TPMTestState test;
-    test_data data;
+    test_data data = {};
     GThread *thread;
     const char *suffix = tpm_version == TPM_VERSION_2_0 ? "tpm2" : "tpm12";
     char *args, *variant = g_strdup_printf(".%s.%s", tpm_if, suffix);
@@ -1399,7 +1370,6 @@ static void test_acpi_tcg_tpm(const char *machine, const 
char *tpm_if,
     thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
     tpm_emu_test_wait_cond(&test);
 
-    memset(&data, 0, sizeof(data));
     data.machine = machine;
     data.variant = variant;
 
@@ -1434,9 +1404,8 @@ static void test_acpi_q35_tcg_tpm12_tis(void)
 
 static void test_acpi_tcg_dimm_pxm(const char *machine)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = machine;
     data.variant = ".dimmpxm";
     test_acpi_one(" -machine nvdimm=on,nvdimm-persistence=cpu"
@@ -1504,7 +1473,6 @@ static void test_acpi_virt_tcg_memhp(void)
 
 static void test_acpi_microvm_prepare(test_data *data)
 {
-    memset(data, 0, sizeof(*data));
     data->machine = "microvm";
     data->required_struct_types = NULL; /* no smbios */
     data->required_struct_types_len = 0;
@@ -1513,7 +1481,7 @@ static void test_acpi_microvm_prepare(test_data *data)
 
 static void test_acpi_microvm_tcg(void)
 {
-    test_data data;
+    test_data data = {};
 
     test_acpi_microvm_prepare(&data);
     test_acpi_one(" -machine microvm,acpi=on,ioapic2=off,rtc=off",
@@ -1523,7 +1491,7 @@ static void test_acpi_microvm_tcg(void)
 
 static void test_acpi_microvm_usb_tcg(void)
 {
-    test_data data;
+    test_data data = {};
 
     test_acpi_microvm_prepare(&data);
     data.variant = ".usb";
@@ -1534,7 +1502,7 @@ static void test_acpi_microvm_usb_tcg(void)
 
 static void test_acpi_microvm_rtc_tcg(void)
 {
-    test_data data;
+    test_data data = {};
 
     test_acpi_microvm_prepare(&data);
     data.variant = ".rtc";
@@ -1545,7 +1513,7 @@ static void test_acpi_microvm_rtc_tcg(void)
 
 static void test_acpi_microvm_pcie_tcg(void)
 {
-    test_data data;
+    test_data data = {};
 
     test_acpi_microvm_prepare(&data);
     data.variant = ".pcie";
@@ -1557,7 +1525,7 @@ static void test_acpi_microvm_pcie_tcg(void)
 
 static void test_acpi_microvm_ioapic2_tcg(void)
 {
-    test_data data;
+    test_data data = {};
 
     test_acpi_microvm_prepare(&data);
     data.variant = ".ioapic2";
@@ -1622,9 +1590,8 @@ static void test_acpi_virt_tcg_pxb(void)
 
 static void test_acpi_tcg_acpi_hmat(const char *machine)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = machine;
     data.variant = ".acpihmat";
     test_acpi_one(" -machine hmat=on"
@@ -1721,9 +1688,8 @@ static void test_acpi_virt_tcg_acpi_hmat(void)
 
 static void test_acpi_q35_tcg_acpi_hmat_noinitiator(void)
 {
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.variant = ".acpihmat-noinitiator";
     test_acpi_one(" -machine hmat=on"
@@ -1772,9 +1738,8 @@ static void test_acpi_erst(const char *machine)
 {
     gchar *tmp_path = g_dir_make_tmp("qemu-test-erst.XXXXXX", NULL);
     gchar *params;
-    test_data data;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = machine;
     data.variant = ".acpierst";
     params = g_strdup_printf(
@@ -1802,7 +1767,7 @@ static void test_acpi_microvm_acpi_erst(void)
 {
     gchar *tmp_path = g_dir_make_tmp("qemu-test-erst.XXXXXX", NULL);
     gchar *params;
-    test_data data;
+    test_data data = {};
 
     test_acpi_microvm_prepare(&data);
     data.variant = ".pcie";
@@ -2003,10 +1968,9 @@ static void test_oem_fields(test_data *data)
 
 static void test_acpi_piix4_oem_fields(void)
 {
-    test_data data;
     char *args;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_PC;
     data.required_struct_types = base_required_struct_types;
     data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
@@ -2022,10 +1986,9 @@ static void test_acpi_piix4_oem_fields(void)
 
 static void test_acpi_q35_oem_fields(void)
 {
-    test_data data;
     char *args;
+    test_data data = {};
 
-    memset(&data, 0, sizeof(data));
     data.machine = MACHINE_Q35;
     data.required_struct_types = base_required_struct_types;
     data.required_struct_types_len = ARRAY_SIZE(base_required_struct_types);
@@ -2041,7 +2004,7 @@ static void test_acpi_q35_oem_fields(void)
 
 static void test_acpi_microvm_oem_fields(void)
 {
-    test_data data;
+    test_data data = {};
     char *args;
 
     test_acpi_microvm_prepare(&data);
-- 
2.39.2