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Rename pg_builtin_integer_constant_p to pg_integer_constant_p

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Since it's not builtin.  Also fix a related typo.

Reviewed-by: David Rowley <dgrowleyml@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CAApHDvom02B_XNVSkvxznVUyZbjGAR%2B5myA89ZcbEd3%3DPA9UcA%40mail.gmail.com
This commit is contained in:
Peter Eisentraut 2025-09-30 21:15:46 +02:00
parent 19d4f9ffc2
commit 8e2acda2b0
2 changed files with 14 additions and 15 deletions
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13
src/include/c.h
View File

@ -336,14 +336,13 @@
* compile-time integer const. We don't define this macro to return 0 when
* unsupported due to the risk of users of the macro misbehaving if we return
* 0 when the expression *is* an integer constant. Callers may check if this
* macro is defined by checking if HAVE_PG_BUILTIN_INTEGER_CONSTANT_P is
* defined.
* macro is defined by checking if HAVE_PG_INTEGER_CONSTANT_P is defined.
*/
#if defined(HAVE__BUILTIN_CONSTANT_P)
/* When __builtin_const_p() is available, use it. */
#define pg_builtin_integer_constant_p(x) __builtin_constant_p(x)
#define HAVE_PG_BUILTIN_INTEGER_CONSTANT_P
/* When __builtin_constant_p() is available, use it. */
#define pg_integer_constant_p(x) __builtin_constant_p(x)
#define HAVE_PG_INTEGER_CONSTANT_P
#elif defined(_MSC_VER) && defined(__STDC_VERSION__)
/*
@ -353,9 +352,9 @@
* and only works with integer constants. Compilation will fail if given a
* constant or variable of any type other than an integer.
*/
#define pg_builtin_integer_constant_p(x) \
#define pg_integer_constant_p(x) \
_Generic((1 ? ((void *) ((x) * (uintptr_t) 0)) : &(int) {1}), int *: 1, void *: 0)
#define HAVE_PG_BUILTIN_INTEGER_CONSTANT_P
#define HAVE_PG_INTEGER_CONSTANT_P
#endif
/*

16
src/include/utils/elog.h
View File

@ -119,11 +119,11 @@ struct Node;
* ereport_domain() directly, or preferably they can override the TEXTDOMAIN
* macro.
*
* When pg_builtin_integer_constant_p is available and elevel >= ERROR we make
* When pg_integer_constant_p is available and elevel >= ERROR we make
* a call to errstart_cold() instead of errstart(). This version of the
* function is marked with pg_attribute_cold which will coax supporting
* compilers into generating code which is more optimized towards non-ERROR
* cases. Because we use pg_builtin_integer_constant_p() in the condition,
* cases. Because we use pg_integer_constant_p() in the condition,
* when elevel is not a compile-time constant, or if it is, but it's < ERROR,
* the compiler has no need to generate any code for this branch. It can
* simply call errstart() unconditionally.
@ -131,25 +131,25 @@ struct Node;
* If elevel >= ERROR, the call will not return; we try to inform the compiler
* of that via pg_unreachable(). However, no useful optimization effect is
* obtained unless the compiler sees elevel as a compile-time constant, else
* we're just adding code bloat. So, if pg_builtin_integer_constant_p is
* we're just adding code bloat. So, if pg_integer_constant_p is
* available, use that to cause the second if() to vanish completely for
* non-constant cases. We avoid using a local variable because it's not
* necessary and prevents gcc from making the unreachability deduction at
* optlevel -O0.
*----------
*/
#ifdef HAVE_PG_BUILTIN_INTEGER_CONSTANT_P
#ifdef HAVE_PG_INTEGER_CONSTANT_P
#define ereport_domain(elevel, domain, ...) \
do { \
pg_prevent_errno_in_scope(); \
if (pg_builtin_integer_constant_p(elevel) && (elevel) >= ERROR ? \
if (pg_integer_constant_p(elevel) && (elevel) >= ERROR ? \
errstart_cold(elevel, domain) : \
errstart(elevel, domain)) \
__VA_ARGS__, errfinish(__FILE__, __LINE__, __func__); \
if (pg_builtin_integer_constant_p(elevel) && (elevel) >= ERROR) \
if (pg_integer_constant_p(elevel) && (elevel) >= ERROR) \
pg_unreachable(); \
} while(0)
#else /* !HAVE_PG_BUILTIN_INTEGER_CONSTANT_P */
#else /* !HAVE_PG_INTEGER_CONSTANT_P */
#define ereport_domain(elevel, domain, ...) \
do { \
const int elevel_ = (elevel); \
@ -159,7 +159,7 @@ struct Node;
if (elevel_ >= ERROR) \
pg_unreachable(); \
} while(0)
#endif /* HAVE_PG_BUILTIN_INTEGER_CONSTANT_P */
#endif /* HAVE_PG_INTEGER_CONSTANT_P */
#define ereport(elevel, ...) \
ereport_domain(elevel, TEXTDOMAIN, __VA_ARGS__)