RFR(S): 8058827: XCode 6.0 (Clang) warning "operator new' should not return a null pointer unless..."

Christian Thalinger christian.thalinger at oracle.com
Fri Sep 19 22:03:45 UTC 2014


On Sep 19, 2014, at 12:30 PM, David Chase <david.r.chase at oracle.com> wrote:

> bug: https://bugs.openjdk.java.net/browse/JDK-8058827
> webrev: http://cr.openjdk.java.net/~drchase/8058827/webrev.00/
> 
> Problem: I decided I would find trouble before it found me, and installed XCode 6 and tried a fastdebug build.
> There appears to be one stopper, which is this warning compiling hotspot:
> 
> /Users/dr2chase/work/jdk9/hotspot/src/share/vm/memory/allocation.cpp:698:3: error: 'operator new' should not return a null pointer unless it is declared 'throw()' [-Werror,-Wnew-returns-null] 
>  return 0; 
>  ^ 
> 
> The file in question has a comment warning against careless meddling, so I did not touch the signature,
> and instead rewrote the zero as a static.
> 
> Testing:
> compilation on Mavericks + XCode 6.0.1, compilation on Ubuntu 13.10 + Gcc 4.8, both fastdebug.
> 
> I ran jtreg on hotspot/test/compiler and it looked basically functional (i.e., about as many failures as usual, about a dozen).

This should not be the case.  Which are failing?

> 
> David
> 



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