[PATCH v2 00/48] Use g_assert_not_reached instead of (g_)assert(0, false)

[Pierrick Bouvier]

This series cleans up all usages of assert/g_assert who are supposed to stop
execution of QEMU. We replace those by g_assert_not_reached().
It was suggested recently when cleaning codebase to build QEMU with gcc
and tsan: 
https://lore.kernel.org/qemu-devel/54bb02a6-1b12-460a-97f6-3f478ef766c6@linaro.org/.

In more, cleanup useless break and return after g_assert_not_reached();

And finally, ensure with scripts/checkpatch.pl that we don't reintroduce
(g_)assert(false) in the future.

New commits (removing return) need review.

Tested that it build warning free with gcc and clang.

v2
- align backslashes for some changes
- add summary in all commits message
- remove redundant comment

v1
20240910221606.1817478-1-pierrick.bouvier@linaro.org/T/#t">https://lore.kernel.org/qemu-devel/20240910221606.1817478-1-pierrick.bouvier@linaro.org/T/#t

Pierrick Bouvier (48):
  docs/spin: replace assert(0) with g_assert_not_reached()
  hw/acpi: replace assert(0) with g_assert_not_reached()
  hw/arm: replace assert(0) with g_assert_not_reached()
  hw/char: replace assert(0) with g_assert_not_reached()
  hw/core: replace assert(0) with g_assert_not_reached()
  hw/net: replace assert(0) with g_assert_not_reached()
  hw/watchdog: replace assert(0) with g_assert_not_reached()
  migration: replace assert(0) with g_assert_not_reached()
  qobject: replace assert(0) with g_assert_not_reached()
  system: replace assert(0) with g_assert_not_reached()
  target/ppc: replace assert(0) with g_assert_not_reached()
  tests/qtest: replace assert(0) with g_assert_not_reached()
  tests/unit: replace assert(0) with g_assert_not_reached()
  include/hw/s390x: replace assert(false) with g_assert_not_reached()
  block: replace assert(false) with g_assert_not_reached()
  hw/hyperv: replace assert(false) with g_assert_not_reached()
  hw/net: replace assert(false) with g_assert_not_reached()
  hw/nvme: replace assert(false) with g_assert_not_reached()
  hw/pci: replace assert(false) with g_assert_not_reached()
  hw/ppc: replace assert(false) with g_assert_not_reached()
  migration: replace assert(false) with g_assert_not_reached()
  target/i386/kvm: replace assert(false) with g_assert_not_reached()
  tests/qtest: replace assert(false) with g_assert_not_reached()
  accel/tcg: remove break after g_assert_not_reached()
  block: remove break after g_assert_not_reached()
  hw/acpi: remove break after g_assert_not_reached()
  hw/gpio: remove break after g_assert_not_reached()
  hw/misc: remove break after g_assert_not_reached()
  hw/net: remove break after g_assert_not_reached()
  hw/pci-host: remove break after g_assert_not_reached()
  hw/scsi: remove break after g_assert_not_reached()
  hw/tpm: remove break after g_assert_not_reached()
  target/arm: remove break after g_assert_not_reached()
  target/riscv: remove break after g_assert_not_reached()
  tests/qtest: remove break after g_assert_not_reached()
  ui: remove break after g_assert_not_reached()
  fpu: remove break after g_assert_not_reached()
  tcg/loongarch64: remove break after g_assert_not_reached()
  include/qemu: remove return after g_assert_not_reached()
  hw/hyperv: remove return after g_assert_not_reached()
  hw/net: remove return after g_assert_not_reached()
  hw/pci: remove return after g_assert_not_reached()
  hw/ppc: remove return after g_assert_not_reached()
  migration: remove return after g_assert_not_reached()
  qobject: remove return after g_assert_not_reached()
  qom: remove return after g_assert_not_reached()
  tests/qtest: remove return after g_assert_not_reached()
  scripts/checkpatch.pl: emit error when using assert(false)

 docs/spin/aio_notify_accept.promela     |  6 +++---
 docs/spin/aio_notify_bug.promela        |  6 +++---
 include/hw/s390x/cpu-topology.h         |  2 +-
 include/qemu/pmem.h                     |  1 -
 accel/tcg/plugin-gen.c                  |  1 -
 block/qcow2.c                           |  2 +-
 block/ssh.c                             |  1 -
 hw/acpi/aml-build.c                     |  3 +--
 hw/arm/highbank.c                       |  2 +-
 hw/char/avr_usart.c                     |  2 +-
 hw/core/numa.c                          |  2 +-
 hw/gpio/nrf51_gpio.c                    |  1 -
 hw/hyperv/hyperv_testdev.c              |  7 +++----
 hw/hyperv/vmbus.c                       | 15 ++++++---------
 hw/misc/imx6_ccm.c                      |  1 -
 hw/misc/mac_via.c                       |  2 --
 hw/net/e1000e_core.c                    |  4 +---
 hw/net/i82596.c                         |  2 +-
 hw/net/igb_core.c                       |  4 +---
 hw/net/net_rx_pkt.c                     |  3 +--
 hw/net/vmxnet3.c                        |  1 -
 hw/nvme/ctrl.c                          |  8 ++++----
 hw/pci-host/gt64120.c                   |  2 --
 hw/pci/pci-stub.c                       |  6 ++----
 hw/ppc/ppc.c                            |  1 -
 hw/ppc/spapr_events.c                   |  3 +--
 hw/scsi/virtio-scsi.c                   |  1 -
 hw/tpm/tpm_spapr.c                      |  1 -
 hw/watchdog/watchdog.c                  |  2 +-
 migration/dirtyrate.c                   |  3 +--
 migration/migration-hmp-cmds.c          |  2 +-
 migration/postcopy-ram.c                | 21 +++++++--------------
 migration/ram.c                         |  8 +++-----
 qobject/qlit.c                          |  2 +-
 qobject/qnum.c                          | 12 ++++--------
 qom/object.c                            |  1 -
 system/rtc.c                            |  2 +-
 target/arm/hyp_gdbstub.c                |  1 -
 target/i386/kvm/kvm.c                   |  4 ++--
 target/ppc/dfp_helper.c                 |  8 ++++----
 target/ppc/mmu_helper.c                 |  2 +-
 target/riscv/monitor.c                  |  1 -
 tests/qtest/acpi-utils.c                |  1 -
 tests/qtest/ipmi-bt-test.c              |  2 +-
 tests/qtest/ipmi-kcs-test.c             |  4 ++--
 tests/qtest/migration-helpers.c         |  1 -
 tests/qtest/numa-test.c                 | 10 +++++-----
 tests/qtest/rtl8139-test.c              |  2 +-
 tests/unit/test-xs-node.c               |  4 ++--
 ui/qemu-pixman.c                        |  1 -
 fpu/softfloat-parts.c.inc               |  2 --
 target/riscv/insn_trans/trans_rvv.c.inc |  2 --
 tcg/loongarch64/tcg-target.c.inc        |  1 -
 scripts/checkpatch.pl                   |  3 +++
 54 files changed, 72 insertions(+), 120 deletions(-)

-- 
2.39.2