Hi,

On 30/12/2019 09:11, Hussin, Mohamad Noor Alim wrote:
Hi Richard,

I am using gcc 8.3.0. I get this error while compiling the source code 
hotspot/src/share/vm/adlc/output_c.cpp which related to sprintf.
See the error log below.

/workspace/poky/build/tmp/work/x86_64-linux/icedtea7-native/2.1.3-r1.0/icedtea-2.1.3/build/openjdk-boot/hotspot/src/share/vm/adlc/output_c.cpp:1239:34:
 error: ‘_idx’ directive writing 4 bytes into a region of size between 2 and 12 
[-Werror=format-overflow=]
            sprintf(left_reg_index,",inst%d_idx%d", left_index, left_op_index);
                                   ^~~~~~~~~~~~~~~
/workspace/poky/build/tmp/work/x86_64-linux/icedtea7-native/2.1.3-r1.0/icedtea-2.1.3/build/openjdk-boot/hotspot/src/share/vm/adlc/output_c.cpp:1239:34:
 note: directive argument in the range [-2147483648, 9999]
In file included from /usr/include/stdio.h:873,
                  from 
/workspace/poky/build/tmp/work/x86_64-linux/icedtea7-native/2.1.3-r1.0/icedtea-2.1.3/build/openjdk-boot/hotspot/src/share/vm/adlc/adlc.hpp:33,
                  from 
/workspace/poky/build/tmp/work/x86_64-linux/icedtea7-native/2.1.3-r1.0/icedtea-2.1.3/build/openjdk-boot/hotspot/src/share/vm/adlc/output_c.cpp:27:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:36:34: note: 
‘__builtin___sprintf_chk’ output between 12 and 32 bytes into a destination of 
size 18
    return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
           ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/workspace/poky/build/tmp/work/x86_64-linux/icedtea7-native/2.1.3-r1.0/icedtea-2.1.3/build/openjdk-boot/hotspot/src/share/vm/adlc/output_c.cpp:1252:37:
 error: ‘_idx’ directive writing 4 bytes into a region of size between 2 and 12 
[-Werror=format-overflow=]
              sprintf(right_reg_index,",inst%d_idx%d", right_index, 
right_op_index);
                                      ^~~~~~~~~~~~~~~

Strange, I'm unable to reproduce that problem...
Nonetheless I'd prefer a "real" fix of the error instead of Wno-error if that's doable for you?


By the way, this patch file 
"recipes-core/icedtea/openjdk-7-03b147/icedtea-hotspot-handle-gcc7-format-overflow.patch"
 is set to apply=no
in recipe file 
https://git.yoctoproject.org/cgit/cgit.cgi/meta-java/tree/recipes-core/icedtea/openjdk-7-release-03b147.inc#n92.
So, that patch file will not apply during do_patch.

It is applied using DISTRIBUTION_PATCHES in https://git.yoctoproject.org/cgit/cgit.cgi/meta-java/tree/recipes-core/icedtea/openjdk-7-release-03b147.inc#n115

regards;rl


Regards,
Alim Hussin

-----Original Message-----
From: Richard Leitner <[email protected]>
Sent: Friday, December 27, 2019 7:00 PM
To: Hussin, Mohamad Noor Alim <[email protected]>; 
[email protected]
Subject: Re: [oe] [meta-java][PATCH] icedtea7-native: Fix compilation error due 
to format-overflow

Hi,

On 05/12/2019 03:43, [email protected] wrote:
From: Mohamad Noor Alim Hussin <[email protected]>

Getting a compilaton error due to format-overflow. Workaround to
suppress the error message by ignore the warning.

Same as for jdk 8, AFAIK these warnings should be fixed by 
recipes-core/icedtea/openjdk-7-03b147/icedtea-hotspot-handle-gcc7-format-overflow.patch

Where/why do you get them?

regards;Richard.L


Signed-off-by: Mohamad Noor Alim Hussin
<[email protected]>
---
   recipes-core/icedtea/icedtea7-native.inc | 2 +-
   1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/recipes-core/icedtea/icedtea7-native.inc
b/recipes-core/icedtea/icedtea7-native.inc
index b578cb2..0329d71 100644
--- a/recipes-core/icedtea/icedtea7-native.inc
+++ b/recipes-core/icedtea/icedtea7-native.inc
@@ -26,7 +26,7 @@ CXXFLAGS_append = " -fno-tree-dse"
   CXX_append = " -std=gnu++98"
# WORKAROUND: ignore errors from new compilers -CFLAGS_append = "
-Wno-error=stringop-overflow -Wno-error=return-type"
+CFLAGS_append = " -Wno-error=stringop-overflow -Wno-error=return-type 
-Wno-error=format-overflow"
inherit native java autotools pkgconfig
   inherit openjdk-build-helper

--
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