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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.

(cherry picked from commit 802810c371)
(cherry picked from commit 4c79dcc3e7)
This commit is contained in:
Rémi Verschelde 2021-07-15 16:57:47 +02:00
parent 172dd99fb2
commit 5d023b5993
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GPG Key ID: C3336907360768E1
1 changed files with 10 additions and 7 deletions
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17
SConstruct
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@ -407,18 +407,21 @@ if selected_platform in platform_list:
else: # Rest of the world
version = methods.get_compiler_version(env) or [-1, -1]
shadow_local_warning = []
all_plus_warnings = ["-Wwrite-strings"]
common_warnings = []
if methods.using_gcc(env):
env.Append(CCFLAGS=["-Wno-misleading-indentation"])
common_warnings += ["-Wno-misleading-indentation"]
if version[0] >= 7:
shadow_local_warning = ["-Wshadow-local"]
common_warnings += ["-Wshadow-local"]
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":
# Note: enable -Wimplicit-fallthrough for Clang (already part of -Wextra for GCC)
# once we switch to C++11 or later (necessary for our FALLTHROUGH macro).
env.Append(CCFLAGS=["-Wall", "-Wextra", "-Wno-unused-parameter"] + all_plus_warnings + shadow_local_warning)
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(
@ -434,9 +437,9 @@ if selected_platform in platform_list:
if version[0] >= 9:
env.Append(CCFLAGS=["-Wattribute-alias=2"])
elif env["warnings"] == "all":
env.Append(CCFLAGS=["-Wall"] + shadow_local_warning)
env.Append(CCFLAGS=["-Wall"] + common_warnings)
elif env["warnings"] == "moderate":
env.Append(CCFLAGS=["-Wall", "-Wno-unused"] + shadow_local_warning)
env.Append(CCFLAGS=["-Wall", "-Wno-unused"] + common_warnings)
else: # 'no'
env.Append(CCFLAGS=["-w"])
if env["werror"]: