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Commitb4363fc

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macdiceadunstan
authored andcommitted
Disable clang 16's -Wcast-function-type-strict.
Clang 16 is still in development, but seawasp reveals that it hasstarted warning about many of our casts of function pointers (thoseintroduced by commit1c27d16, and some older ones). Disable the newwarning for now, since otherwise buildfarm animal seawasp fails, and wehave no current plans to change our strategy for these callback functiontypes.May be back-patched with other Clang/LLVM 16 changes around releasetime.Discussion:https://postgr.es/m/CA%2BhUKGJvX%2BL3aMN84ksT-cGy08VHErRNip3nV-WmTx7f6Pqhyw%40mail.gmail.com(cherry picked from commit101c37c)Author: Thomas Munro <tmunro@postgresql.org>Author: Alexandra Wang <alexandra.wang.oss@gmail.com>
1 parenta5abace commitb4363fc

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3 files changed

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3 files changed

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‎configure

Lines changed: 44 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -6411,6 +6411,50 @@ fi
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if test -n "$NOT_THE_CFLAGS"; then
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CFLAGS="$CFLAGS -Wno-stringop-truncation"
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fi
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# Suppress clang 16's strict warnings about function casts
6415+
NOT_THE_CFLAGS=""
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} supports -Wcast-function-type-strict, for NOT_THE_CFLAGS" >&5
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$as_echo_n "checking whether ${CC} supports -Wcast-function-type-strict, for NOT_THE_CFLAGS... " >&6; }
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if ${pgac_cv_prog_CC_cflags__Wcast_function_type_strict+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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pgac_save_CFLAGS=$CFLAGS
6422+
pgac_save_CC=$CC
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CC=${CC}
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CFLAGS="${NOT_THE_CFLAGS} -Wcast-function-type-strict"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int
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main ()
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{
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6434+
;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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pgac_cv_prog_CC_cflags__Wcast_function_type_strict=yes
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else
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pgac_cv_prog_CC_cflags__Wcast_function_type_strict=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
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CC="$pgac_save_CC"
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_prog_CC_cflags__Wcast_function_type_strict" >&5
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$as_echo "$pgac_cv_prog_CC_cflags__Wcast_function_type_strict" >&6; }
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if test x"$pgac_cv_prog_CC_cflags__Wcast_function_type_strict" = x"yes"; then
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NOT_THE_CFLAGS="${NOT_THE_CFLAGS} -Wcast-function-type-strict"
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fi
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6455+
if test -n "$NOT_THE_CFLAGS"; then
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CFLAGS="$CFLAGS -Wno-cast-function-type-strict"
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fi
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elif test "$ICC" = yes; then
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# Intel's compiler has a bug/misoptimization in checking for
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# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.

‎configure.in

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -553,6 +553,12 @@ if test "$GCC" = yes -a "$ICC" = no; then
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if test -n "$NOT_THE_CFLAGS"; then
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CFLAGS="$CFLAGS -Wno-stringop-truncation"
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fi
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# Suppress clang 16's strict warnings about function casts
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NOT_THE_CFLAGS=""
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PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS, [-Wcast-function-type-strict])
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if test -n "$NOT_THE_CFLAGS"; then
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CFLAGS="$CFLAGS -Wno-cast-function-type-strict"
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fi
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elif test "$ICC" = yes; then
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# Intel's compiler has a bug/misoptimization in checking for
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# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.

‎meson.build

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