[PATCH v2 0/5] sim: Suppress warnings if built with Clang

[Tsukasa OI]

Hello,

This is the version 2 patchset to suppress Clang compiler warnings
(causes a build failure due to default -Werror).


[Background]

When we build Binutils and GDB with Clang, it causes a build failure due to
warnings generated by Clang and the default -Werror configuration.

I finally managed to make ALL ARCHITECTURE ENABLED Binutils and GDB
-Werror-free on Clang 15.0.0 (note that this does not necessarily mean
warning-free) and this patchset is a part of it (common simulator part
except the printf-like functions).

Full Clang 15.0.0 -Werror-free branch is available at:
<https://github.com/a4lg/binutils-gdb/tree/clang-nowarn-dev>


[About this Patchset]

This patchset contains four five fixes to the files under sim{,/common}.
Each contains minor fixes to suppress Clang / GCC warnings.

Each change is detailed in the each patch.


[Changes: v1 -> v2]

-   Commit messages are improved
-   PATCH v1 1/4 is Moved to another patchset
-   PATCH v1 2-4/4 -> PATCH v2 1-3/5
-   New: Check known getopt definition on sim (PATCH v2 4/5)
    This test is already performed on binutils, gas, gprof and ld and this
    commit does the same to sim.
-   New: Initialize pbb_br_* by default (PATCH v2 5/5)
    It did not generate warnings on Clang but GCC creates some warnings
    (although those are not reported as errors).
    This is due to uninitialized pbb_br_* variables and this commit fixes
    the issue by initializing them by a harmless value.

Thanks,
Tsukasa




Tsukasa OI (5):
  sim: Remove self-assignments
  sim: Make WITH_{TRACE,PROFILE}-based macros bool
  sim: Suppress non-literal printf warning
  sim: Check known getopt definition existence
  sim: Initialize pbb_br_* by default

 sim/common/genmloop.sh   |  8 ++++----
 sim/common/hw-tree.c     |  2 --
 sim/common/sim-hw.c      |  3 +++
 sim/common/sim-profile.h | 12 ++++++------
 sim/common/sim-trace.h   |  4 ++--
 sim/config.h.in          |  3 +++
 sim/configure            | 32 ++++++++++++++++++++++++++++++++
 sim/configure.ac         | 10 ++++++++++
 8 files changed, 60 insertions(+), 14 deletions(-)


base-commit: 58d69206b8173b9d027a6c65f56cdaf045ae6e64
-- 
2.34.1