diff --git a/qt5-qtwebengine.spec b/qt5-qtwebengine.spec
index 4a44d7f..0abfcfe 100644
--- a/qt5-qtwebengine.spec
+++ b/qt5-qtwebengine.spec
@@ -56,7 +56,7 @@
 Summary: Qt5 - QtWebEngine components
 Name:    qt5-qtwebengine
 Version: 5.9.0
-Release: 2%{?dist}
+Release: 3%{?dist}
 
 # See LICENSE.GPL LICENSE.LGPL LGPL_EXCEPTION.txt, for details
 # See also http://qt-project.org/doc/qt-5.0/qtdoc/licensing.html
@@ -117,6 +117,9 @@ Patch20: qtwebengine-opensource-src-5.8.0-qt57.patch
 Patch21: qtwebengine-opensource-src-5.9.0-gn-bootstrap-verbose.patch
 # Fix src/3rdparty/chromium/build/linux/unbundle/re2.gn
 Patch22: qtwebengine-opensource-src-5.9.0-system-re2.patch
+# Fix broken binary compatibility for C memory management functions (incomplete
+# upstream fix for QTBUG-60565)
+Patch23: qtwebengine-opensource-src-5.9.0-qtbug-60565-c-symbols.patch
 # Backport upstream patch to fix GN FTBFS on aarch64 (QTBUG-61128)
 # https://codereview.qt-project.org/196178
 Patch100: qtwebengine-opensource-src-5.9.0-gn-aarch64.patch
@@ -368,6 +371,7 @@ BuildArch: noarch
 %patch20 -p1 -b .qt57
 %patch21 -p1 -b .gn-bootstrap-verbose
 %patch22 -p1 -b .system-re2
+%patch23 -p1 -b .qtbug-60565-c-symbols
 %patch100 -p1 -b .gn-aarch64
 %patch101 -p1 -b .aarch64-gcc-toolchain
 # fix // in #include in content/renderer/gpu to avoid debugedit failure
@@ -576,6 +580,10 @@ done
 
 
 %changelog
+* Sun Jun 25 2017 Kevin Kofler <Kevin@tigcc.ticalc.org> - 5.9.0-3
+- Fix broken binary compatibility for C memory management functions (incomplete
+  upstream fix for QTBUG-60565)
+
 * Tue Jun 13 2017 Kevin Kofler <Kevin@tigcc.ticalc.org> - 5.9.0-2
 - arm-fpu-fix patch: Also build the host tools (i.e., GN) with the correct FPU
 
diff --git a/qtwebengine-opensource-src-5.9.0-qtbug-60565-c-symbols.patch b/qtwebengine-opensource-src-5.9.0-qtbug-60565-c-symbols.patch
new file mode 100644
index 0000000..35edb0c
--- /dev/null
+++ b/qtwebengine-opensource-src-5.9.0-qtbug-60565-c-symbols.patch
@@ -0,0 +1,162 @@
+diff -ur qtwebengine-opensource-src-5.9.0/src/core/api/qtbug-60565.cpp qtwebengine-opensource-src-5.9.0-qtbug-60565-c-symbols/src/core/api/qtbug-60565.cpp
+--- qtwebengine-opensource-src-5.9.0/src/core/api/qtbug-60565.cpp	2017-05-19 06:22:04.000000000 +0200
++++ qtwebengine-opensource-src-5.9.0-qtbug-60565-c-symbols/src/core/api/qtbug-60565.cpp	2017-06-25 22:33:28.508223362 +0200
+@@ -39,6 +39,8 @@
+ 
+ #include <new>
+ #include <unistd.h>
++#include <stdlib.h>
++#include <malloc.h>
+ 
+ #if defined(__LP64__)
+ #  define SIZE_T_MANGLING  "m"
+@@ -47,6 +49,7 @@
+ #endif
+ 
+ #define SHIM_ALIAS_SYMBOL(fn) __attribute__((weak, alias(#fn)))
++#define SHIM_HIDDEN __attribute__ ((visibility ("hidden")))
+ 
+ extern "C" {
+ 
+@@ -82,26 +85,100 @@
+ void __ShimCppDeleteArrayNoThrow(void* address, const std::nothrow_t&) noexcept
+     SHIM_ALIAS_SYMBOL(ShimCppDeleteArray);
+ 
++__asm__(".symver __ShimMalloc, malloc@Qt_5");
++void* __ShimMalloc(size_t size) noexcept
++    SHIM_ALIAS_SYMBOL(ShimMalloc);
++
++__asm__(".symver __ShimCalloc, calloc@Qt_5");
++void* __ShimCalloc(size_t n, size_t size) noexcept
++    SHIM_ALIAS_SYMBOL(ShimCalloc);
++
++__asm__(".symver __ShimRealloc, realloc@Qt_5");
++void* __ShimRealloc(void* address, size_t size) noexcept
++    SHIM_ALIAS_SYMBOL(ShimRealloc);
++
++__asm__(".symver __ShimMemalign, memalign@Qt_5");
++void* __ShimMemalign(size_t alignment, size_t size) noexcept
++    SHIM_ALIAS_SYMBOL(ShimMemalign);
++
++__asm__(".symver __ShimPosixMemalign, posix_memalign@Qt_5");
++int __ShimPosixMemalign(void** res, size_t alignment, size_t size) noexcept
++    SHIM_ALIAS_SYMBOL(ShimPosixMemalign);
++
++__asm__(".symver __ShimValloc, valloc@Qt_5");
++void* __ShimValloc(size_t size) noexcept
++    SHIM_ALIAS_SYMBOL(ShimValloc);
++
++__asm__(".symver __ShimPvalloc, pvalloc@Qt_5");
++void* __ShimPvalloc(size_t size) noexcept
++    SHIM_ALIAS_SYMBOL(ShimPvalloc);
++
++__asm__(".symver __ShimFree, free@Qt_5");
++void __ShimFree(void* address) noexcept
++    SHIM_ALIAS_SYMBOL(ShimFree);
++
+ static void* __shimCppNew(size_t size);
+ static void* __shimCppNewArray(size_t size);
+ static void __shimCppDelete(void *address);
+ static void __shimCppDeleteArray(void *address);
++static void* __shimMalloc(size_t size) noexcept;
++static void* __shimCalloc(size_t n, size_t size) noexcept;
++static void* __shimRealloc(void* address, size_t size) noexcept;
++static void* __shimMemalign(size_t alignment, size_t size) noexcept;
++static int __shimPosixMemalign(void** res, size_t alignment, size_t size)
++    noexcept;
++static void* __shimValloc(size_t size) noexcept;
++static void* __shimPvalloc(size_t size) noexcept;
++static void __shimFree(void* address) noexcept;
+ 
+-static void* ShimCppNew(size_t size) {
++SHIM_HIDDEN void* ShimCppNew(size_t size) {
+     return __shimCppNew(size);
+ }
+ 
+-static void* ShimCppNewArray(size_t size) {
++SHIM_HIDDEN void* ShimCppNewArray(size_t size) {
+     return __shimCppNewArray(size);
+ }
+ 
+-static void ShimCppDelete(void* address) {
++SHIM_HIDDEN void ShimCppDelete(void* address) {
+     __shimCppDelete(address);
+ }
+ 
+-static void ShimCppDeleteArray(void* address) {
++SHIM_HIDDEN void ShimCppDeleteArray(void* address) {
+     __shimCppDeleteArray(address);
+ }
++
++SHIM_HIDDEN void* ShimMalloc(size_t size) noexcept {
++  return __shimMalloc(size);
++}
++
++SHIM_HIDDEN void* ShimCalloc(size_t n, size_t size) noexcept {
++  return __shimCalloc(n, size);
++}
++
++SHIM_HIDDEN void* ShimRealloc(void* address, size_t size) noexcept {
++  return __shimRealloc(address, size);
++}
++
++SHIM_HIDDEN void* ShimMemalign(size_t alignment, size_t size) noexcept {
++  return __shimMemalign(alignment, size);
++}
++
++SHIM_HIDDEN int ShimPosixMemalign(void** res, size_t alignment, size_t size)
++    noexcept {
++  return __shimPosixMemalign(res, alignment, size);
++}
++
++SHIM_HIDDEN void* ShimValloc(size_t size) noexcept {
++  return __shimValloc(size);
++}
++
++SHIM_HIDDEN void* ShimPvalloc(size_t size) noexcept {
++  return __shimPvalloc(size);
++}
++
++SHIM_HIDDEN void ShimFree(void* address) noexcept {
++  __shimFree(address);
++}
+ } // extern "C"
+ 
+ static void* __shimCppNew(size_t size) {
+@@ -119,3 +196,36 @@
+ static void __shimCppDeleteArray(void* address) {
+     operator delete[](address);
+ }
++
++static void* __shimMalloc(size_t size) noexcept {
++  return malloc(size);
++}
++
++static void* __shimCalloc(size_t n, size_t size) noexcept {
++  return calloc(n, size);
++}
++
++static void* __shimRealloc(void* address, size_t size) noexcept {
++  return realloc(address, size);
++}
++
++static void* __shimMemalign(size_t alignment, size_t size) noexcept {
++  return memalign(alignment, size);
++}
++
++static int __shimPosixMemalign(void** res, size_t alignment, size_t size)
++    noexcept {
++  return posix_memalign(res, alignment, size);
++}
++
++static void* __shimValloc(size_t size) noexcept {
++  return valloc(size);
++}
++
++static void* __shimPvalloc(size_t size) noexcept {
++  return pvalloc(size);
++}
++
++static void __shimFree(void* address) noexcept {
++  free(address);
++}