* Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking
[not found] <545BE242.7020507@free.fr>
@ 2014-11-06 21:06 ` Falk Tannhäuser
2014-11-06 22:37 ` JonY
0 siblings, 1 reply; 5+ messages in thread
From: Falk Tannhäuser @ 2014-11-06 21:06 UTC (permalink / raw)
To: cygwin
Since I updated gcc from version 4.9.0-1 to 4.9.2-1, I obtain the error
collect2: Fehler: ld mit Signal 11 [Segmentation fault] beendet
when compiling and linking a C or C++ program. However, an executable is generated and appears to work as expected.
I installed the latest test release of cygwin so far (1.7.33-0.7).
Falk
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking
2014-11-06 21:06 ` Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking Falk Tannhäuser
@ 2014-11-06 22:37 ` JonY
2014-11-06 22:59 ` Falk Tannhäuser
0 siblings, 1 reply; 5+ messages in thread
From: JonY @ 2014-11-06 22:37 UTC (permalink / raw)
To: cygwin
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On 11/7/2014 05:06, Falk Tannhäuser wrote:
> Since I updated gcc from version 4.9.0-1 to 4.9.2-1, I obtain the error
> collect2: Fehler: ld mit Signal 11 [Segmentation fault] beendet
> when compiling and linking a C or C++ program. However, an executable is
> generated and appears to work as expected.
> I installed the latest test release of cygwin so far (1.7.33-0.7).
>
> Falk
Does it somehow work if you link with gcc -fno-lto?
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking
2014-11-06 22:37 ` JonY
@ 2014-11-06 22:59 ` Falk Tannhäuser
2014-11-07 9:32 ` JonY
0 siblings, 1 reply; 5+ messages in thread
From: Falk Tannhäuser @ 2014-11-06 22:59 UTC (permalink / raw)
To: cygwin
Am 06.11.2014 um 23:37 schrieb JonY:
> On 11/7/2014 05:06, Falk Tannhäuser wrote:
>> Since I updated gcc from version 4.9.0-1 to 4.9.2-1, I obtain the error
>> collect2: Fehler: ld mit Signal 11 [Segmentation fault] beendet
>> when compiling and linking a C or C++ program. However, an executable is
>> generated and appears to work as expected.
>> I installed the latest test release of cygwin so far (1.7.33-0.7).
>
> Does it somehow work if you link with gcc -fno-lto?
Yes, this fixes the problem.
Falk
--
Problem reports: http://cygwin.com/problems.html
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* Re: Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking
2014-11-06 22:59 ` Falk Tannhäuser
@ 2014-11-07 9:32 ` JonY
2014-11-07 20:42 ` Falk Tannhäuser
0 siblings, 1 reply; 5+ messages in thread
From: JonY @ 2014-11-07 9:32 UTC (permalink / raw)
To: cygwin
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On 11/7/2014 06:59, Falk Tannhäuser wrote:
> Am 06.11.2014 um 23:37 schrieb JonY:
>> On 11/7/2014 05:06, Falk Tannhäuser wrote:
>>> Since I updated gcc from version 4.9.0-1 to 4.9.2-1, I obtain the error
>>> collect2: Fehler: ld mit Signal 11 [Segmentation fault] beendet
>>> when compiling and linking a C or C++ program. However, an executable is
>>> generated and appears to work as expected.
>>> I installed the latest test release of cygwin so far (1.7.33-0.7).
>>
>> Does it somehow work if you link with gcc -fno-lto?
>
> Yes, this fixes the problem.
>
There seems to be some confusion in the __cxa_atexit in Cygwin 1.7.32,
basically 4.9.1 will only work with .32.
1.7.33 fixed the incorrect behavior that unfortunately broke gcc
__cxa_atexit usage. The next 1.7.33-0.8 should be more tolerant of the
old .32 behavior.
After 1.7.33 is officially released, gcc-4.8.3-4 and 4.9 will switch to
the standard conformant behavior.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking
2014-11-07 9:32 ` JonY
@ 2014-11-07 20:42 ` Falk Tannhäuser
0 siblings, 0 replies; 5+ messages in thread
From: Falk Tannhäuser @ 2014-11-07 20:42 UTC (permalink / raw)
To: cygwin
Am 07.11.2014 um 10:32 schrieb JonY:
> 1.7.33 fixed the incorrect behavior that unfortunately broke gcc
> __cxa_atexit usage. The next 1.7.33-0.8 should be more tolerant of the
> old .32 behavior.
>
> After 1.7.33 is officially released, gcc-4.8.3-4 and 4.9 will switch to
> the standard conformant behavior.
ACK. I confirm that the problem is gone with cygwin-1.7.33-0.8 (no need for -fno-lto anymore).
Falk
--
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2014-11-06 21:06 ` Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking Falk Tannhäuser
2014-11-06 22:37 ` JonY
2014-11-06 22:59 ` Falk Tannhäuser
2014-11-07 9:32 ` JonY
2014-11-07 20:42 ` Falk Tannhäuser
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