openjdk-8: refresh patches

Refresh all openjdk8 patches as a preparation for the upcoming update.

Signed-off-by: Richard Leitner <richard.leitner@skidata.com>

15 files changed, 76 insertions, 57 deletions

diff --git a/recipes-core/openjdk/openjdk-8-release-common.inc b/recipes-core/openjdk/openjdk-8-release-common.inc
index 02210a1..3e4a0cf 100644
--- a/recipes-core/openjdk/openjdk-8-release-common.inc
+++ b/recipes-core/openjdk/openjdk-8-release-common.inc
@@ -31,7 +31,7 @@ HOTSPOT_UB_PATCH = "\
     file://1007-hotspot-Missing-return-statement-in-__sync_val_compa.patch \
     file://1008-hotspot-Turn-on-the-Wreturn-type-warning.patch \
     file://1009-hotspot-handle-format-error-for-GCC-7.patch \
-    file://1013-hotspot-make-disable-Werror.patch \
+    file://1013-hotspot-enable-Wno-error.patch \
 "
 HOTSPOT_UB_PATCH_append_class-target = "\
     file://1010-hotspot-fix-adlc-flags.patch \
diff --git a/recipes-core/openjdk/patches-openjdk-8/1001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch b/recipes-core/openjdk/patches-openjdk-8/1001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch
index 280ee60..2393869 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch
@@ -1,7 +1,7 @@
-From 5e8080a8dd56205f550f7c490f864c95dc8e509b Mon Sep 17 00:00:00 2001
+From d01c03bb68692365f1cf8c8e79c42b7452b83928 Mon Sep 17 00:00:00 2001
 From: Wenlin Kang <wenlin.kang@windriver.com>
 Date: Sun, 17 Feb 2019 22:38:33 -0800
-Subject: [PATCH 1001/1012] hotspot: fix crash on JNI_CreateJavaVM
+Subject: [PATCH 1001/1013] hotspot: fix crash on JNI_CreateJavaVM
 
 In function os::pd_create_stack_guard_pages(char* addr, size_t size),
 when addr < os::Linux::initial_thread_stack_bottom(), usually munmap()
@@ -33,5 +33,5 @@ index 03cabfefb..4f28cc1fb 100644
        stack_extent = (uintptr_t) get_stack_commited_bottom(
                                      os::Linux::initial_thread_stack_bottom(),
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1002-hotspot-use-correct-include-for-poll.patch b/recipes-core/openjdk/patches-openjdk-8/1002-hotspot-use-correct-include-for-poll.patch
index 3f678dd..19e12fb 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1002-hotspot-use-correct-include-for-poll.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1002-hotspot-use-correct-include-for-poll.patch
@@ -1,7 +1,7 @@
-From df566df123c8af8252c0e113c41c32482834923e Mon Sep 17 00:00:00 2001
+From 0fdafd1b0cf7c9abc956d0dbe611f7aa7186c70b Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
 Date: Tue, 27 Feb 2018 09:28:06 +0000
-Subject: [PATCH 1002/1012] hotspot: use correct include for poll
+Subject: [PATCH 1002/1013] hotspot: use correct include for poll
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
@@ -83,5 +83,5 @@ index 8e095ab69..ce37e9a12 100644
  #include <unistd.h>
  #include <netdb.h>
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1003-hotspot-don-t-rely-on-old-SysV-SIGCLD.patch b/recipes-core/openjdk/patches-openjdk-8/1003-hotspot-don-t-rely-on-old-SysV-SIGCLD.patch
index 8e31461..b4c64c6 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1003-hotspot-don-t-rely-on-old-SysV-SIGCLD.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1003-hotspot-don-t-rely-on-old-SysV-SIGCLD.patch
@@ -1,7 +1,7 @@
-From e5bf672f4e10997789f2a447fd95a88703dbd332 Mon Sep 17 00:00:00 2001
+From 43292d7d298432228ef270696921af7a5d73a833 Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
 Date: Tue, 27 Feb 2018 15:00:55 +0000
-Subject: [PATCH 1003/1012] hotspot: don't rely on old SysV SIGCLD
+Subject: [PATCH 1003/1013] hotspot: don't rely on old SysV SIGCLD
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
@@ -39,5 +39,5 @@ index ba84788a1..c22281f7c 100644
    "CONT",       SIGCONT,        /* Continue (POSIX).  */
    "STOP",       SIGSTOP,        /* Stop, unblockable (POSIX).  */
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1004-hotspot-backport-patch-to-fix-misuses-of-strncpy-str.patch b/recipes-core/openjdk/patches-openjdk-8/1004-hotspot-backport-patch-to-fix-misuses-of-strncpy-str.patch
index ad480e3..69b85aa 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1004-hotspot-backport-patch-to-fix-misuses-of-strncpy-str.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1004-hotspot-backport-patch-to-fix-misuses-of-strncpy-str.patch
@@ -1,7 +1,7 @@
-From 3a6eef99b27b7dd750e7a02eb3ada71db99d9345 Mon Sep 17 00:00:00 2001
+From 1beb42da8445e9ca6c8560f8c78cac185fffb64d Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
 Date: Fri, 10 Aug 2018 14:54:45 +0100
-Subject: [PATCH 1004/1012] hotspot: backport patch to fix misuses of
+Subject: [PATCH 1004/1013] hotspot: backport patch to fix misuses of
  strncpy/strncat
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
@@ -84,10 +84,10 @@ index 93cd9e854..e7b32cd6b 100644
      }
    } else if (match(event, "format bytes-per-line")) {
 diff --git a/hotspot/src/share/vm/runtime/arguments.cpp b/hotspot/src/share/vm/runtime/arguments.cpp
-index 2665b6b8c..5a9294677 100644
+index 7c85a0da8..ea4026b98 100644
 --- a/hotspot/src/share/vm/runtime/arguments.cpp
 +++ b/hotspot/src/share/vm/runtime/arguments.cpp
-@@ -3455,7 +3455,7 @@ void Arguments::fix_appclasspath() {
+@@ -3456,7 +3456,7 @@ void Arguments::fix_appclasspath() {
      }
  
      char* copy = AllocateHeap(strlen(src) + 1, mtInternal);
@@ -96,7 +96,7 @@ index 2665b6b8c..5a9294677 100644
  
      // trim all trailing empty paths
      for (char* tail = copy + strlen(copy) - 1; tail >= copy && *tail == separator; tail--) {
-@@ -3834,17 +3834,16 @@ static char* get_shared_archive_path() {
+@@ -3835,17 +3835,16 @@ static char* get_shared_archive_path() {
      if (end != NULL) *end = '\0';
      size_t jvm_path_len = strlen(jvm_path);
      size_t file_sep_len = strlen(os::file_separator());
@@ -148,7 +148,7 @@ index 1b00f829a..4daea2b7e 100644
    // Note that the following does not depend on write_len.
    // This means that position and count get updated
 diff --git a/hotspot/src/share/vm/utilities/vmError.cpp b/hotspot/src/share/vm/utilities/vmError.cpp
-index ef3bb5cee..c11fef472 100644
+index 49b978a02..97c5e33f2 100644
 --- a/hotspot/src/share/vm/utilities/vmError.cpp
 +++ b/hotspot/src/share/vm/utilities/vmError.cpp
 @@ -450,14 +450,7 @@ void VMError::report(outputStream* st) {
@@ -168,5 +168,5 @@ index ef3bb5cee..c11fef472 100644
           st->print(" (0x%x)", _id);
         }
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1005-hotspot-fix-Wreturn-type-issues-introduced-by-806165.patch b/recipes-core/openjdk/patches-openjdk-8/1005-hotspot-fix-Wreturn-type-issues-introduced-by-806165.patch
index 81177d0..ce86997 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1005-hotspot-fix-Wreturn-type-issues-introduced-by-806165.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1005-hotspot-fix-Wreturn-type-issues-introduced-by-806165.patch
@@ -1,7 +1,7 @@
-From bce7b39095a839b8e77fe068e87150e855224705 Mon Sep 17 00:00:00 2001
+From 0ba0fdd1596b31af69abc2fc1a9d96e77ab61a0c Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
 Date: Mon, 13 Aug 2018 16:40:34 +0100
-Subject: [PATCH 1005/1012] hotspot: fix -Wreturn-type issues introduced by
+Subject: [PATCH 1005/1013] hotspot: fix -Wreturn-type issues introduced by
  8061651
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
@@ -55,5 +55,5 @@ index f43dc5ed7..8d7523c55 100644
    return NULL;
  #endif
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1006-hotspot-Zero-build-requires-disabled-warnings.patch b/recipes-core/openjdk/patches-openjdk-8/1006-hotspot-Zero-build-requires-disabled-warnings.patch
index 38067cb..cddd4bf 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1006-hotspot-Zero-build-requires-disabled-warnings.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1006-hotspot-Zero-build-requires-disabled-warnings.patch
@@ -1,7 +1,7 @@
-From 84fc6448f44cd45a5448d0e88df8ccabfa10dcc5 Mon Sep 17 00:00:00 2001
+From 69d92c4763bd8c1545fb29af7fc54f6f58b87a65 Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
 Date: Mon, 13 Aug 2018 16:45:24 +0100
-Subject: [PATCH 1006/1012] hotspot: Zero build requires disabled warnings
+Subject: [PATCH 1006/1013] hotspot: Zero build requires disabled warnings
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
@@ -138,5 +138,5 @@ index 39f77f858..b9c73dc48 100644
  
    // These routines are only used on cpu architectures that
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1007-hotspot-Missing-return-statement-in-__sync_val_compa.patch b/recipes-core/openjdk/patches-openjdk-8/1007-hotspot-Missing-return-statement-in-__sync_val_compa.patch
index 6692200..79e3b7a 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1007-hotspot-Missing-return-statement-in-__sync_val_compa.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1007-hotspot-Missing-return-statement-in-__sync_val_compa.patch
@@ -1,7 +1,7 @@
-From 996a1e3d53773f41e9098117a69a060722972269 Mon Sep 17 00:00:00 2001
+From 8f0a48544832278f9b6503dae1a03b05da41b8fc Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
 Date: Mon, 13 Aug 2018 16:46:33 +0100
-Subject: [PATCH 1007/1012] hotspot: Missing return statement in
+Subject: [PATCH 1007/1013] hotspot: Missing return statement in
  __sync_val_compare_and_swap_8
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
@@ -51,5 +51,5 @@ index cbee43baa..136d4d3de 100644
  };
  #endif // !_LP64
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1008-hotspot-Turn-on-the-Wreturn-type-warning.patch b/recipes-core/openjdk/patches-openjdk-8/1008-hotspot-Turn-on-the-Wreturn-type-warning.patch
index 10dd0f7..d8eae8b 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1008-hotspot-Turn-on-the-Wreturn-type-warning.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1008-hotspot-Turn-on-the-Wreturn-type-warning.patch
@@ -1,7 +1,7 @@
-From 2cce90259f9de7b5fba7f3380cdc90b3a586aa75 Mon Sep 17 00:00:00 2001
+From b9273263a4ddc38c61bf0e59819bc9503495b5a1 Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
 Date: Mon, 13 Aug 2018 16:48:32 +0100
-Subject: [PATCH 1008/1012] hotspot: Turn on the -Wreturn-type warning
+Subject: [PATCH 1008/1013] hotspot: Turn on the -Wreturn-type warning
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
@@ -231,5 +231,5 @@ index 7ad2b71f4..182084373 100644
    static inline void record_thread_stack(void* addr, size_t size) { }
    static inline void release_thread_stack(void* addr, size_t size) { }
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1009-hotspot-handle-format-error-for-GCC-7.patch b/recipes-core/openjdk/patches-openjdk-8/1009-hotspot-handle-format-error-for-GCC-7.patch
index ee950cd..daa43a7 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1009-hotspot-handle-format-error-for-GCC-7.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1009-hotspot-handle-format-error-for-GCC-7.patch
@@ -1,7 +1,7 @@
-From d085dcce6f8700fd8ddda475357496ea6da323dc Mon Sep 17 00:00:00 2001
+From 3c9da574b8610a0a1f4bdd8a2cb44a6aee8e3a89 Mon Sep 17 00:00:00 2001
 From: Andreas Obergschwandtner <andreas.obergschwandtner@skidata.com>
 Date: Fri, 21 Sep 2018 10:44:06 +0200
-Subject: [PATCH 1009/1012] hotspot: handle format error for GCC >= 7
+Subject: [PATCH 1009/1013] hotspot: handle format error for GCC >= 7
 
 Upstream-Status: Pending
 
@@ -12,10 +12,10 @@ Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
  1 file changed, 4 insertions(+), 2 deletions(-)
 
 diff --git a/hotspot/src/share/vm/adlc/output_c.cpp b/hotspot/src/share/vm/adlc/output_c.cpp
-index b3766636d..eba08d2f0 100644
+index 199169046..889b785c1 100644
 --- a/hotspot/src/share/vm/adlc/output_c.cpp
 +++ b/hotspot/src/share/vm/adlc/output_c.cpp
-@@ -436,9 +436,11 @@ static int pipeline_res_mask_initializer(
+@@ -419,9 +419,11 @@ static int pipeline_res_mask_initializer(
    for (i = maxcycleused; i > 0; i /= 10)
      cycledigit++;
  
@@ -30,5 +30,5 @@ index b3766636d..eba08d2f0 100644
    static const char* pipeline_use_cycle_mask = "Pipeline_Use_Cycle_Mask";
    static const char* pipeline_use_element    = "Pipeline_Use_Element";
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1010-hotspot-fix-adlc-flags.patch b/recipes-core/openjdk/patches-openjdk-8/1010-hotspot-fix-adlc-flags.patch
index 03f8660..eba2b11 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1010-hotspot-fix-adlc-flags.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1010-hotspot-fix-adlc-flags.patch
@@ -1,7 +1,7 @@
-From 89408e465d92657de8c54d4622f1810c28c3d700 Mon Sep 17 00:00:00 2001
+From 7f0202182455d5705501dda97e86aa99506b13b4 Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Erkka=20K=C3=A4=C3=A4ri=C3=A4?= <erkka.kaaria@intel.com>
 Date: Thu, 2 Jan 2020 10:19:29 +0100
-Subject: [PATCH 1010/1012] hotspot: fix adlc flags
+Subject: [PATCH 1010/1013] hotspot: fix adlc flags
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
@@ -39,5 +39,5 @@ index 92b8b9b39..ae0aa0082 100644
  
  # OUTDIR must be the same as AD_Dir = $(GENERATED)/adfiles in top.make:
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1011-hotspot-fix-shark-build-common.patch b/recipes-core/openjdk/patches-openjdk-8/1011-hotspot-fix-shark-build-common.patch
index 8fe5489..f00d56b 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1011-hotspot-fix-shark-build-common.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1011-hotspot-fix-shark-build-common.patch
@@ -1,7 +1,7 @@
-From 1015cc718ba25cabf613b96fd58baa8dfb8492fe Mon Sep 17 00:00:00 2001
+From 2a9fddfb3370278f021858f28524dd83f1d6d1aa Mon Sep 17 00:00:00 2001
 From: Jens Rehsack <rehsack@gmail.com>
 Date: Thu, 2 Jan 2020 10:22:19 +0100
-Subject: [PATCH 1011/1012] hotspot: fix shark build (common)
+Subject: [PATCH 1011/1013] hotspot: fix shark build (common)
 
 Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
 ---
@@ -444,5 +444,5 @@ index 243183c07..601ca7925 100644
      builder()->CreateICmpEQ(lock, check),
      released_fast, slow_path);
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1012-hotspot-restrict-to-staging-dir.patch b/recipes-core/openjdk/patches-openjdk-8/1012-hotspot-restrict-to-staging-dir.patch
index b61f664..92af81d 100644
--- a/recipes-core/openjdk/patches-openjdk-8/1012-hotspot-restrict-to-staging-dir.patch
+++ b/recipes-core/openjdk/patches-openjdk-8/1012-hotspot-restrict-to-staging-dir.patch
@@ -1,7 +1,7 @@
-From e4c080e29afa3f93383c1e046273cd20ec835ca3 Mon Sep 17 00:00:00 2001
+From 1f9bb32ae75517a7ce53a5e3bf4395f8826cec48 Mon Sep 17 00:00:00 2001
 From: Jens Rehsack <rehsack@gmail.com>
 Date: Thu, 2 Jan 2020 10:23:38 +0100
-Subject: [PATCH 1012/1012] hotspot: restrict to staging dir
+Subject: [PATCH 1012/1013] hotspot: restrict to staging dir
 
 Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
 ---
@@ -22,5 +22,5 @@ index 386e94b1f..7642a67f8 100644
  DTRACE_ENABLED = $(shell test -f $(SDT_H_FILE) && echo $(SDT_H_FILE))
  REASON = "$(SDT_H_FILE) not found"
 -- 
-2.24.1
+2.26.2
 
diff --git a/recipes-core/openjdk/patches-openjdk-8/1013-hotspot-enable-Wno-error.patch b/recipes-core/openjdk/patches-openjdk-8/1013-hotspot-enable-Wno-error.patch
new file mode 100644
index 0000000..cdfe364
--- /dev/null
+++ b/recipes-core/openjdk/patches-openjdk-8/1013-hotspot-enable-Wno-error.patch
@@ -0,0 +1,33 @@
+From beeb3ed0855f1a2a6075da0ff2f93dc5654ab1d5 Mon Sep 17 00:00:00 2001
+From: Richard Leitner <richard.leitner@skidata.com>
+Date: Thu, 20 Aug 2020 09:39:23 +0200
+Subject: [PATCH 1013/1013] hotspot: enable -Wno-error
+
+As we don't want to deal with compiler warnings in OpenEmbedded disable
+them for now.
+
+Upstream-Status: Pending
+
+Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
+---
+ make/linux/makefiles/gcc.make | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/hotspot/make/linux/makefiles/gcc.make b/hotspot/make/linux/makefiles/gcc.make
+index cd9511e50..94412c8fe 100644
+--- a/hotspot/make/linux/makefiles/gcc.make
++++ b/hotspot/make/linux/makefiles/gcc.make
+@@ -200,8 +200,8 @@ else
+   CFLAGS += -pipe
+ endif
+ 
+-# Compiler warnings are treated as errors
+-WARNINGS_ARE_ERRORS = -Werror
++# Compiler warnings are not treated as errors
++WARNINGS_ARE_ERRORS = -Wno-error
+ 
+ ifeq ($(USE_CLANG), true)
+   # However we need to clean the code up before we can unrestrictedly enable this option with Clang
+-- 
+2.26.2
+
diff --git a/recipes-core/openjdk/patches-openjdk-8/1013-hotspot-make-disable-Werror.patch b/recipes-core/openjdk/patches-openjdk-8/1013-hotspot-make-disable-Werror.patch
deleted file mode 100644
index bc844be..0000000
--- a/recipes-core/openjdk/patches-openjdk-8/1013-hotspot-make-disable-Werror.patch
+++ /dev/null
@@ -1,14 +0,0 @@
-diff -r 12177d88b89c hotspot/make/linux/makefiles/gcc.make
---- a/hotspot/make/linux/makefiles/gcc.make     Thu Sep 26 07:17:41 2019 +0100
-+++ b/hotspot/make/linux/makefiles/gcc.make     Wed Apr 29 10:56:10 2020 +0200
-@@ -200,8 +200,8 @@
-   CFLAGS += -pipe
- endif
- 
--# Compiler warnings are treated as errors
--WARNINGS_ARE_ERRORS = -Werror
-+# Compiler warnings are not treated as errors
-+WARNINGS_ARE_ERRORS = -Wno-error
- 
- ifeq ($(USE_CLANG), true)
-   # However we need to clean the code up before we can unrestrictedly enable this option with Clang