+From 514afd67b651bea834bdb84b7685b48e9e56ac21 Mon Sep 17 00:00:00 2001
+From: Gustavo Lopes <glopes@nebm.ist.utl.pt>
+Date: Tue, 30 Apr 2013 19:00:31 +0200
+Subject: [PATCH] Fix bug #64729: compilation failure on x32
+
+---
+ Zend/zend_alloc.c | 18 ++++++++++++++----
+ Zend/zend_multiply.h | 4 ++--
+ 2 files changed, 16 insertions(+), 6 deletions(-)
+
+diff --git a/Zend/zend_alloc.c b/Zend/zend_alloc.c
+index 605e396..0bbd59a 100644
+--- a/Zend/zend_alloc.c
++++ b/Zend/zend_alloc.c
+@@ -720,7 +720,7 @@ static inline unsigned int zend_mm_high_bit(size_t _size)
+ #elif defined(__GNUC__) && defined(__x86_64__)
+ unsigned long n;
+
+- __asm__("bsrq %1,%0\n\t" : "=r" (n) : "rm" (_size));
++ __asm__("bsr %1,%0\n\t" : "=r" (n) : "rm" (_size));
+ return (unsigned int)n;
+ #elif defined(_MSC_VER) && defined(_M_IX86)
+ __asm {
+@@ -746,12 +746,12 @@ static inline unsigned int zend_mm_low_bit(size_t _size)
+ #elif defined(__GNUC__) && defined(__x86_64__)
+ unsigned long n;
+
+- __asm__("bsfq %1,%0\n\t" : "=r" (n) : "rm" (_size));
++ __asm__("bsf %1,%0\n\t" : "=r" (n) : "rm" (_size));
+ return (unsigned int)n;
+ #elif defined(_MSC_VER) && defined(_M_IX86)
+ __asm {
+ bsf eax, _size
+- }
++ }
+ #else
+ static const int offset[16] = {4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0};
+ unsigned int n;
+@@ -2481,12 +2481,22 @@ static inline size_t safe_address(size_t nmemb, size_t size, size_t offset)
+ size_t res = nmemb;
+ unsigned long overflow = 0;
+
+- __asm__ ("mulq %3\n\taddq %4,%0\n\tadcq %1,%1"
++#ifdef __ILP32__ /* x32 */
++# define LP_SUFF "l"
++#else /* amd64 */
++# define LP_SUFF "q"
++#endif
++
++ __asm__ ("mul" LP_SUFF " %3\n\t"
++ "add %4,%0\n\t"
++ "adc %1,%1"
+ : "=&a"(res), "=&d" (overflow)
+ : "%0"(res),
+ "rm"(size),
+ "rm"(offset));
+
++#undef LP_SUFF
++
+ if (UNEXPECTED(overflow)) {
+ zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (%zu * %zu + %zu)", nmemb, size, offset);
+ return 0;