Merge branch 'PHP-7.1' of git.php.net:/php-src into PHP-7.1

* 'PHP-7.1' of git.php.net:/php-src:
  Yet one attempt to mitigate the unzip error on AppVeyor
  Ensure SDK is checked out before asking for version
  Fix fetching the SDK version
  Fix SDK version comparison and add more verbosity
  Don't use the cache dependency, SDK version is handled in script
  Remove status check on the SDK repo and add version check
  Use abbrev
  Catch with the latest AppVeyor unzip errors
  Fixed type inference

Author: krakjoe

.appveyor.yml

@@ -18,7 +18,6 @@ clone_depth: 64
 
 cache:
         - c:\build-cache
-        - c:\build-cache\sdk -> .appveyor.yml
 
 environment:
         PHP_BUILD_CACHE_BASE_DIR: c:\build-cache  

appveyor/build.bat

@@ -2,6 +2,7 @@
 
 set SDK_REMOTE=https://github.com/OSTC/php-sdk-binary-tools.git
 set SDK_BRANCH=%PHP_BUILD_SDK_BRANCH%
+set SDK_RUNNER=%PHP_BUILD_CACHE_SDK_DIR%\phpsdk-vc14-%PLATFORM%.bat
 
 if not exist "%PHP_BUILD_CACHE_BASE_DIR%" (
 	echo Creating %PHP_BUILD_CACHE_BASE_DIR%
@@ -13,17 +14,25 @@ if not exist "%PHP_BUILD_OBJ_DIR%" (
 	mkdir "%PHP_BUILD_OBJ_DIR%"
 )
 
+if not exist "%SDK_RUNNER%" (
+	if exist "%PHP_BUILD_CACHE_SDK_DIR%" rmdir /s /q "%PHP_BUILD_CACHE_SDK_DIR%"
+)
+
 if not exist "%PHP_BUILD_CACHE_SDK_DIR%" (
 	echo Cloning remote SDK repository
 	git clone --branch %SDK_BRANCH% %SDK_REMOTE% "%PHP_BUILD_CACHE_SDK_DIR%" 2>&1 
-) else (
+)
+
+for /f "tokens=*" %%a in ('type %PHP_BUILD_CACHE_SDK_DIR%\VERSION') do set GOT_SDK_VER=%%a
+echo Got SDK version %GOT_SDK_VER%
+if NOT "%GOT_SDK_VER%" == "%PHP_BUILD_SDK_BRANCH:~8%" (
+	echo Switching to the configured SDK version %SDK_BRANCH:~8%
 	echo Fetching remote SDK repository
 	git --git-dir="%PHP_BUILD_CACHE_SDK_DIR%\.git" --work-tree="%PHP_BUILD_CACHE_SDK_DIR%" fetch --prune origin 2>&1
 	echo Checkout SDK repository branch
 	git --git-dir="%PHP_BUILD_CACHE_SDK_DIR%\.git" --work-tree="%PHP_BUILD_CACHE_SDK_DIR%" checkout --force %SDK_BRANCH% 
 )
 
-set SDK_RUNNER=%PHP_BUILD_CACHE_SDK_DIR%\phpsdk-vc14-%PLATFORM%.bat
 if not exist "%SDK_RUNNER%" (
 	echo "%SDK_RUNNER%" doesn't exist
 	exit /b 3

ext/opcache/Optimizer/zend_inference.c

@@ -3075,7 +3075,12 @@ static int zend_update_type_info(const zend_op_array *op_array,
 					}
 					j = zend_ssa_next_use(ssa_ops, ssa_ops[i].result_def, j);
 				}
-				UPDATE_SSA_TYPE(tmp, ssa_ops[i].op1_def);
+				if ((tmp & MAY_BE_ARRAY) && (tmp & MAY_BE_ARRAY_KEY_ANY)) {
+					UPDATE_SSA_TYPE(tmp, ssa_ops[i].op1_def);
+				} else {
+					/* invalid key type */
+					UPDATE_SSA_TYPE(t1, ssa_ops[i].op1_def);
+				}
 				COPY_SSA_OBJ_TYPE(ssa_ops[i].op1_use, ssa_ops[i].op1_def);
 			}
 			/* FETCH_LIST on a string behaves like FETCH_R on null */