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Disable clang 16's -Wcast-function-type-strict.

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Clang 16 is still in development, but seawasp reveals that it has
started warning about many of our casts of function pointers (those
introduced by commit 1c27d16e, and some older ones).  Disable the new
warning for now, since otherwise buildfarm animal seawasp fails, and we
have no current plans to change our strategy for these callback function
types.

May be back-patched with other Clang/LLVM 16 changes around release
time.

Discussion: https://postgr.es/m/CA%2BhUKGJvX%2BL3aMN84ksT-cGy08VHErRNip3nV-WmTx7f6Pqhyw%40mail.gmail.com
This commit is contained in:
Thomas Munro
2022-12-13 10:03:28 +13:00
parent a8500750ca
commit 101c37cd34
3 changed files with 53 additions and 0 deletions
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6
configure.ac
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@ -573,6 +573,12 @@ if test "$GCC" = yes -a "$ICC" = no; then
if test -n "$NOT_THE_CFLAGS"; then
CFLAGS="$CFLAGS -Wno-stringop-truncation"
fi
# Suppress clang 16's strict warnings about function casts
NOT_THE_CFLAGS=""
PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcast-function-type-strict])
if test -n "$NOT_THE_CFLAGS"; then
CFLAGS="$CFLAGS -Wno-cast-function-type-strict"
fi
elif test "$ICC" = yes; then
# Intel's compiler has a bug/misoptimization in checking for
# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.