Use return instead of exit() in configure

petere · petere · commit 1c0cf52b39ca · 2016-09-30T14:03:57.000-04:00
Using exit() requires stdlib.h, which is not included.  Use return
instead.  Also add return type for main().

Reviewed-by: Heikki Linnakangas &lt;hlinnaka@iki.fi&gt;
Reviewed-by: Thomas Munro &lt;thomas.munro@enterprisedb.com&gt;
diff --git a/config/c-compiler.m4 b/config/c-compiler.m4
@@ -71,8 +71,10 @@ int does_int64_work()
     return 0;
   return 1;
 }
+
+int
 main() {
-  exit(! does_int64_work());
+  return (! does_int64_work());
 }])],
 [Ac_cachevar=yes],
 [Ac_cachevar=no],
diff --git a/config/c-library.m4 b/config/c-library.m4
@@ -204,8 +204,10 @@ int does_int64_snprintf_work()
     return 0;			/* either multiply or snprintf is busted */
   return 1;
 }
+
+int
 main() {
-  exit(! does_int64_snprintf_work());
+  return (! does_int64_snprintf_work());
 }]])],
 [pgac_cv_snprintf_long_long_int_modifier=$pgac_modifier; break],
 [],
diff --git a/configure b/configure
@@ -13594,8 +13594,10 @@ int does_int64_work()
     return 0;
   return 1;
 }
+
+int
 main() {
-  exit(! does_int64_work());
+  return (! does_int64_work());
 }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
@@ -13676,8 +13678,10 @@ int does_int64_work()
     return 0;
   return 1;
 }
+
+int
 main() {
-  exit(! does_int64_work());
+  return (! does_int64_work());
 }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
@@ -13770,8 +13774,10 @@ int does_int64_snprintf_work()
     return 0;			/* either multiply or snprintf is busted */
   return 1;
 }
+
+int
 main() {
-  exit(! does_int64_snprintf_work());
+  return (! does_int64_snprintf_work());
 }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :

Original file line number	Diff line number	Diff line change
`@@ -13594,8 +13594,10 @@ int does_int64_work()`
`13594`	`13594`	`return 0;`
`13595`	`13595`	`return 1;`
`13596`	`13596`	`}`
	`13597`	`+`
	`13598`	`+int`
`13597`	`13599`	`main() {`
`13598`		`- exit(! does_int64_work());`
	`13600`	`+ return (! does_int64_work());`
`13599`	`13601`	`}`
`13600`	`13602`	`_ACEOF`
`13601`	`13603`	`if ac_fn_c_try_run "$LINENO"; then :`
`@@ -13676,8 +13678,10 @@ int does_int64_work()`
`13676`	`13678`	`return 0;`
`13677`	`13679`	`return 1;`
`13678`	`13680`	`}`
	`13681`	`+`
	`13682`	`+int`
`13679`	`13683`	`main() {`
`13680`		`- exit(! does_int64_work());`
	`13684`	`+ return (! does_int64_work());`
`13681`	`13685`	`}`
`13682`	`13686`	`_ACEOF`
`13683`	`13687`	`if ac_fn_c_try_run "$LINENO"; then :`
`@@ -13770,8 +13774,10 @@ int does_int64_snprintf_work()`
`13770`	`13774`	`return 0; /* either multiply or snprintf is busted */`
`13771`	`13775`	`return 1;`
`13772`	`13776`	`}`
	`13777`	`+`
	`13778`	`+int`
`13773`	`13779`	`main() {`
`13774`		`- exit(! does_int64_snprintf_work());`
	`13780`	`+ return (! does_int64_snprintf_work());`
`13775`	`13781`	`}`
`13776`	`13782`	`_ACEOF`
`13777`	`13783`	`if ac_fn_c_try_run "$LINENO"; then :`