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Require stdint.h 

stdint.h belongs to the compiler (as opposed to inttypes.h), so by
requiring a C99 compiler we can also require stdint.h
unconditionally.  Remove configure checks and other workarounds for
it.

This also removes a few steps in the required portability adjustments
to the imported time zone code, which can be applied on the next
import.

When using GCC on a platform that is otherwise pre-C99, this will now
require at least GCC 4.5, which is the first release that supplied a
standard-conforming stdint.h if the native platform didn't have it.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/5d398bbb-262a-5fed-d839-d0e5cff3c0d7%402ndquadrant.com
This commit is contained in:
Peter Eisentraut 2020-02-21 09:14:03 +01:00
parent dca3911a81
commit 957338418b
6 changed files with 5 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
configure vendored
View File

@ -14154,79 +14154,6 @@ _ACEOF
fi
ac_fn_c_check_type "$LINENO" "intptr_t" "ac_cv_type_intptr_t" "$ac_includes_default"
if test "x$ac_cv_type_intptr_t" = xyes; then :
$as_echo "#define HAVE_INTPTR_T 1" >>confdefs.h
else
for ac_type in 'int' 'long int' 'long long int'; do
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
$ac_includes_default
int
main ()
{
static int test_array [1 - 2 * !(sizeof (void *) <= sizeof ($ac_type))];
test_array [0] = 0;
return test_array [0];
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
cat >>confdefs.h <<_ACEOF
#define intptr_t $ac_type
_ACEOF
ac_type=
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
test -z "$ac_type" && break
done
fi
ac_fn_c_check_type "$LINENO" "uintptr_t" "ac_cv_type_uintptr_t" "$ac_includes_default"
if test "x$ac_cv_type_uintptr_t" = xyes; then :
$as_echo "#define HAVE_UINTPTR_T 1" >>confdefs.h
else
for ac_type in 'unsigned int' 'unsigned long int' \
'unsigned long long int'; do
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
$ac_includes_default
int
main ()
{
static int test_array [1 - 2 * !(sizeof (void *) <= sizeof ($ac_type))];
test_array [0] = 0;
return test_array [0];
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
cat >>confdefs.h <<_ACEOF
#define uintptr_t $ac_type
_ACEOF
ac_type=
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
test -z "$ac_type" && break
done
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for locale_t" >&5
$as_echo_n "checking for locale_t... " >&6; }
if ${pgac_cv_type_locale_t+:} false; then :

2
configure.in
View File

@ -1477,8 +1477,6 @@ PGAC_STRUCT_SOCKADDR_UN
PGAC_STRUCT_SOCKADDR_STORAGE
PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS
PGAC_STRUCT_ADDRINFO
AC_TYPE_INTPTR_T
AC_TYPE_UINTPTR_T
PGAC_TYPE_LOCALE_T

15
src/include/c.h
View File

@ -64,9 +64,7 @@
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#include <sys/types.h>
#include <errno.h>
#if defined(WIN32) || defined(__CYGWIN__)
@ -429,8 +427,8 @@ typedef unsigned PG_INT128_TYPE uint128
#endif
/*
* stdint.h limits aren't guaranteed to be present and aren't guaranteed to
* have compatible types with our fixed width types. So just define our own.
* stdint.h limits aren't guaranteed to have compatible types with our fixed
* width types. So just define our own.
*/
#define PG_INT8_MIN (-0x7F-1)
#define PG_INT8_MAX (0x7F)
@ -445,15 +443,6 @@ typedef unsigned PG_INT128_TYPE uint128
#define PG_INT64_MAX INT64CONST(0x7FFFFFFFFFFFFFFF)
#define PG_UINT64_MAX UINT64CONST(0xFFFFFFFFFFFFFFFF)
/* Max value of size_t might also be missing if we don't have stdint.h */
#ifndef SIZE_MAX
#if SIZEOF_SIZE_T == 8
#define SIZE_MAX PG_UINT64_MAX
#else
#define SIZE_MAX PG_UINT32_MAX
#endif
#endif
/*
* We now always use int64 timestamps, but keep this symbol defined for the
* benefit of external code that might test it.

14
src/include/pg_config.h.in
View File

@ -310,9 +310,6 @@
/* Define to 1 if the system has the type `int8'. */
#undef HAVE_INT8
/* Define to 1 if the system has the type `intptr_t'. */
#undef HAVE_INTPTR_T
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
@ -680,9 +677,6 @@
/* Define to 1 if the system has the type `uint8'. */
#undef HAVE_UINT8
/* Define to 1 if the system has the type `uintptr_t'. */
#undef HAVE_UINTPTR_T
/* Define to 1 if the system has the type `union semun'. */
#undef HAVE_UNION_SEMUN
@ -1006,10 +1000,6 @@
#undef inline
#endif
/* Define to the type of a signed integer type wide enough to hold a pointer,
if such a type exists, and if the system does not define it. */
#undef intptr_t
/* Define to keyword to use for C99 restrict support, or to nothing if not
supported */
#undef pg_restrict
@ -1033,7 +1023,3 @@
/* Define to how the compiler spells `typeof'. */
#undef typeof
/* Define to the type of an unsigned integer type wide enough to hold a
pointer, if such a type exists, and if the system does not define it. */
#undef uintptr_t

14
src/timezone/README
View File

@ -70,11 +70,8 @@ old-style function declarations to C89 style, but thank goodness they
fixed that.)
* We need the code to follow Postgres' portability conventions; this
includes relying on configure's results rather than hand-hacked #defines,
and not relying on <stdint.h> features that may not exist on old systems.
(In particular this means using Postgres' definitions of the int32 and
int64 typedefs, not int_fast32_t/int_fast64_t. Likewise we use
PG_INT32_MIN/MAX not INT32_MIN/MAX.)
includes relying on configure's results rather than hand-hacked
#defines (see private.h).
* Since Postgres is typically built on a system that has its own copy
of the <time.h> functions, we must avoid conflicting with those. This
@ -112,13 +109,6 @@ to first run the tzcode source files through a sed filter like this:
-e 's|^\*/| */|' \
-e 's/\bregister[ \t]//g' \
-e 's/\bATTRIBUTE_PURE[ \t]//g' \
-e 's/int_fast32_t/int32/g' \
-e 's/int_fast64_t/int64/g' \
-e 's/intmax_t/int64/g' \
-e 's/INT32_MIN/PG_INT32_MIN/g' \
-e 's/INT32_MAX/PG_INT32_MAX/g' \
-e 's/INTMAX_MIN/PG_INT64_MIN/g' \
-e 's/INTMAX_MAX/PG_INT64_MAX/g' \
-e 's/struct[ \t]+tm\b/struct pg_tm/g' \
-e 's/\btime_t\b/pg_time_t/g' \
-e 's/lineno/lineno_t/g' \

6
src/tools/msvc/Solution.pm
View File

@ -275,7 +275,6 @@ sub GenerateFiles
HAVE_INT_TIMEZONE => 1,
HAVE_INT64 => undef,
HAVE_INT8 => undef,
HAVE_INTPTR_T => undef,
HAVE_INTTYPES_H => undef,
HAVE_INT_OPTERR => undef,
HAVE_INT_OPTRESET => undef,
@ -396,7 +395,6 @@ sub GenerateFiles
HAVE_UCRED_H => undef,
HAVE_UINT64 => undef,
HAVE_UINT8 => undef,
HAVE_UINTPTR_T => undef,
HAVE_UNION_SEMUN => undef,
HAVE_UNISTD_H => 1,
HAVE_UNIX_SOCKETS => undef,
@ -496,13 +494,11 @@ sub GenerateFiles
_LARGEFILE_SOURCE => undef,
_LARGE_FILES => undef,
inline => '__inline',
intptr_t => undef,
pg_restrict => '__restrict',
# not defined, because it'd conflict with __declspec(restrict)
restrict => undef,
signed => undef,
typeof => undef,
uintptr_t => undef,);
typeof => undef,);
if ($self->{options}->{uuid})
{