RFR (XS) 8233698: GCC 4.8.5 build failure after JDK-8233530

[Lindenmaier, Goetz]

Hi,

if your CI assures proper building with gcc 4.8.5, why don't you 
state that on the "supported build platforms" page?
https://wiki.openjdk.java.net/display/Build/Supported+Build+Platforms

(If you don't have access there, we could put it up there 
for you.)

@Oracle: it would also be nice to find there that you switched to 
gcc 8.  

Best regards,
  Goetz.

> -----Original Message-----
> From: hotspot-runtime-dev <hotspot-runtime-dev-bounces at openjdk.java.net>
> On Behalf Of Aleksey Shipilev
> Sent: Mittwoch, 6. November 2019 12:33
> To: hotspot-runtime-dev at openjdk.java.net
> Subject: RFR (XS) 8233698: GCC 4.8.5 build failure after JDK-8233530
> 
> Bug:
>   https://bugs.openjdk.java.net/browse/JDK-8233698
> 
> Our current RHEL-based CIs fail to compile jdk/jdk. That C++14 compat is the
> gift that keeps on
> giving! The fix is to get even deeper into the warning disabling story:
> 
> diff -r bb2a436e616c src/hotspot/share/memory/operator_new.cpp
> --- a/src/hotspot/share/memory/operator_new.cpp Wed Nov 06 13:43:25
> 2019 +0800
> +++ b/src/hotspot/share/memory/operator_new.cpp Wed Nov 06 12:31:23
> 2019 +0100
> @@ -89,11 +89,13 @@
>    fatal("Should not call global delete []");
>  }
> 
>  #ifdef __GNUG__
>  // Warning disabled for gcc 5.4
> +// Warning for unknown warning disabled for gcc 4.8.5
>  PRAGMA_DIAG_PUSH
> +PRAGMA_DISABLE_GCC_WARNING("-Wpragmas")
>  PRAGMA_DISABLE_GCC_WARNING("-Wc++14-compat")
>  #endif // __GNUG__
> 
>  void operator delete(void* p, size_t size) throw() {
>    fatal("Should not call global sized delete");
> 
> Testing: gcc 4.8.5 build
> 
> --
> Thanks,
> -Aleksey