Bug #74288 [Opn->Dup]: php check for isinf is wrong

Edit report at https://bugs.php.net/bug.php?id=74288&edit=1 ID: 74288 Updated by: nikic@php.net Reported by: apyhalov at gmail dot com Summary: php check for isinf is wrong -Status: Open +Status: Duplicate Type: Bug Package: Compile Failure Operating System: illumos PHP Version: 7.0.17 Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2017-03-23 11:25:14] nikic@php.net Duplicate of bug #74265. ------------------------------------------------------------------------ [2017-03-22 05:38:04] apyhalov at gmail dot com Description: ------------ In latest php versions it checks for isinf with AC_CHECK_DECLS([isnan, isinf], [], [], [[#include <math.h>]]), which leads to defining #define HAVE_DECL_ISINF 0 when isinf is not declared. Later it checks for it with #ifdef HAVE_DECL_ISINF #define zend_isinf(a) isinf(a) #elif defined(INFINITY) /* Might not work, but is required by ISO C99 */ #define zend_isinf(a) (((a)==INFINITY || (a)==-INFINITY)?1:0) #elif defined(HAVE_FPCLASS) #define zend_isinf(a) ((fpclass(a) == FP_PINF) || (fpclass(a) == FP_NINF)) #else #define zend_isinf(a) 0 #endif This should be changed to something like #if defined(HAVE_DECL_ISINF) && (HAVE_DECL_ISINF!=0) ... This is also true for HAVE_DECL_ISNAN and HAVE_DECL_ISFINITE Otherwise linking php fails with 'Undefined symbol isinf...'. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74288&edit=1