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SCons: Disable Clang -Wordered-compare-function-pointers warning

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It's raised for us on many comparators implemented to be able to store a struct
in `Set` or `Map` (who rely on `operator<` internally). In the cases I reviewed
we don't actually care about the ordering and we use the struct's function
pointers as that's the only distinctive data available.
This commit is contained in:
Rémi Verschelde 2021-07-15 16:57:47 +02:00
parent 9f4e9ad75c
commit 802810c371
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GPG key ID: C3336907360768E1
1 changed files with 10 additions and 6 deletions
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16
SConstruct
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@ -506,13 +506,17 @@ if selected_platform in platform_list:
if env["werror"]:
env.Append(CCFLAGS=["/WX"])
else: # GCC, Clang
gcc_common_warnings = []
common_warnings = []
if methods.using_gcc(env):
gcc_common_warnings += ["-Wshadow-local", "-Wno-misleading-indentation"]
common_warnings += ["-Wshadow-local", "-Wno-misleading-indentation"]
elif methods.using_clang(env):
# We often implement `operator<` for structs of pointers as a requirement
# for putting them in `Set` or `Map`. We don't mind about unreliable ordering.
common_warnings += ["-Wno-ordered-compare-function-pointers"]
if env["warnings"] == "extra":
env.Append(CCFLAGS=["-Wall", "-Wextra", "-Wwrite-strings", "-Wno-unused-parameter"] + gcc_common_warnings)
env.Append(CCFLAGS=["-Wall", "-Wextra", "-Wwrite-strings", "-Wno-unused-parameter"] + common_warnings)
env.Append(CXXFLAGS=["-Wctor-dtor-privacy", "-Wnon-virtual-dtor"])
if methods.using_gcc(env):
env.Append(
@ -531,9 +535,9 @@ if selected_platform in platform_list:
elif methods.using_clang(env):
env.Append(CCFLAGS=["-Wimplicit-fallthrough"])
elif env["warnings"] == "all":
env.Append(CCFLAGS=["-Wall"] + gcc_common_warnings)
env.Append(CCFLAGS=["-Wall"] + common_warnings)
elif env["warnings"] == "moderate":
env.Append(CCFLAGS=["-Wall", "-Wno-unused"] + gcc_common_warnings)
env.Append(CCFLAGS=["-Wall", "-Wno-unused"] + common_warnings)
else: # 'no'
env.Append(CCFLAGS=["-w"])
@ -544,7 +548,7 @@ if selected_platform in platform_list:
env.Append(CXXFLAGS=["-Wno-error=cpp"])
if cc_version_major == 7: # Bogus warning fixed in 8+.
env.Append(CCFLAGS=["-Wno-error=strict-overflow"])
else:
elif methods.using_clang(env):
env.Append(CXXFLAGS=["-Wno-error=#warnings"])
else: # always enable those errors
env.Append(CCFLAGS=["-Werror=return-type"])