Re: [PATCH] Fix PR tree-optimization/77550

[Christophe Lyon <christophe dot lyon at linaro dot org>]

On 22 September 2016 at 22:30, Bernd Edlinger <bernd.edlinger@hotmail.de> wrote:
> On 09/22/16 21:30, Christophe Lyon wrote:
>> On 21 September 2016 at 22:20, Bernd Edlinger <bernd.edlinger@hotmail.de> wrote:
>>> On 09/21/16 21:57, Christophe Lyon wrote:
>>>> Hi,
>>>>
>>>> The new testcase pr77550.C fails on arm:
>>>> /testsuite/g++.dg/pr77550.C:39:43: error: 'operator new' takes type
>>>> 'size_t' ('unsigned int') as first parameter [-fpermissive]
>>>> compiler exited with status 1
>>>>
>>>> Christophe
>>>>
>>>
>>> Yes, I see, thanks.  This should fix it.
>>>
>>> OK for trunk, gcc-6 after a while ?
>>>
>>>
>>> Bernd.
>>
>> Hi,
>>
>> The test now compiles and runs OK on most arm configurations, but
>> on arm-none-eabi --with-cpu=cortex-a9, execution fails:
>> qemu: uncaught target signal 11 (Segmentation fault) - core dumped
>> FAIL: g++.dg/pr77550.C   execution test
>>
>> And on arm-none-eabi with default cpu, the test still does not compile.
>>
>> Christophe
>>
>
> Hmm.  This test case is hardly worth it, because on my armv7hf target
> it doesn't even reproduce the original problem :(
>
> Could you send me the exact compile-flags and the error message
> please?
>

Sorry for the delay, I've been travelling.

Compilation is:
.../xg++ -B/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-arm-none-eabi/gcc3/gcc/testsuite/g++/../../
/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/testsuite/g++.dg/pr77550.C
g++_tg.o -fno-diagnostics-show-caret -fdiagnostics-color=never
-nostdinc++ -I/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-arm-none-eabi/gcc3/arm-none-eabi/libstdc++-v3/include/arm-none-eabi
-I/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-arm-none-eabi/gcc3/arm-none-eabi/libstdc++-v3/include
-I/aci-gcc-fsf/sources/gcc-fsf/gccsrc/libstdc++-v3/libsupc++
-I/aci-gcc-fsf/sources/gcc-fsf/gccsrc/libstdc++-v3/include/backward
-I/aci-gcc-fsf/sources/gcc-fsf/gccsrc/libstdc++-v3/testsuite/util
-fmessage-length=0 -std=c++14 -O3
-L/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-arm-none-eabi/gcc3/arm-none-eabi/./libstdc++-v3/src/.libs
-B/aci-gcc-fsf/builds/gcc-fsf-gccsrc/obj-arm-none-eabi/gcc3/arm-none-eabi/./libstdc++-v3/src/.libs
-Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -lm -o
./pr77550.exe

Then, during execution, I have:
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
and that's all

My gcc configuration flags are:
--target=arm-none-eabi --disable-libgomp --disable-libmudflap
--disable-libcilkrts --enable-checking --enable-languages=c,c++
--with-newlib --disable-tls --with-mode=arm --with-cpu=cortex-a9

Christophe


>
> Bernd.