Remove useless configure check

petere · petere · commit 9a8313dabe5e · 2025-01-05T11:34:28.000+01:00
The test for "decltype" as a variant of "typeof" apparently never worked (see also commit 3582b22), so remove it. Discussion: https://www.postgresql.org/message-id/flat/795b1c54-c64a-47f9-8fa3-880dcab59975%40eisentraut.org
diff --git a/config/c-compiler.m4 b/config/c-compiler.m4
@@ -142,7 +142,7 @@ fi])# PGAC_C_STATIC_ASSERT
 AC_DEFUN([PGAC_C_TYPEOF],
 [AC_CACHE_CHECK(for typeof, pgac_cv_c_typeof,
 [pgac_cv_c_typeof=no
-for pgac_kw in typeof __typeof__ decltype; do
+for pgac_kw in typeof __typeof__; do
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
 [int x = 0;
 $pgac_kw(x) y;
diff --git a/configure b/configure
@@ -14344,7 +14344,7 @@ if ${pgac_cv_c_typeof+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   pgac_cv_c_typeof=no
-for pgac_kw in typeof __typeof__ decltype; do
+for pgac_kw in typeof __typeof__; do
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
diff --git a/meson.build b/meson.build
@@ -2540,7 +2540,7 @@ endif
 
 # Check if the C compiler understands typeof or a variant.  Define
 # HAVE_TYPEOF if so, and define 'typeof' to the actual key word.
-foreach kw : ['typeof', '__typeof__', 'decltype']
+foreach kw : ['typeof', '__typeof__']
   if cc.compiles('''
 int main(void)
 {

Original file line number	Diff line number	Diff line change
`@@ -2540,7 +2540,7 @@ endif`
`2540`	`2540`
`2541`	`2541`	`# Check if the C compiler understands typeof or a variant. Define`
`2542`	`2542`	`# HAVE_TYPEOF if so, and define 'typeof' to the actual key word.`
`2543`		`-foreach kw : ['typeof', '__typeof__', 'decltype']`
	`2543`	`+foreach kw : ['typeof', '__typeof__']`
`2544`	`2544`	`if cc.compiles('''`
`2545`	`2545`	`int main(void)`
`2546`	`2546`	`{`