[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Suspicious warning in W64 build

From: Paul Eggert
Subject: Re: Suspicious warning in W64 build
Date: Sat, 16 Sep 2017 23:40:05 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0

Eli Zaretskii wrote:
Not sure what to do about this.  Add 'volatile' to the declaration of

Looks like a GCC bug. To work around it, please try CACHEABLE instead of volatile, to warn the reader that it's a compiler-bug workaround. Like this:

  struct handler *CACHEABLE c = handlerlist->nextfree;

This seems to imply that m4/manywarnings.m4 has a bug: it somehow
deduces that a 64-bit Windows build can only allocate up to LONG_MAX

That is due to a limitation in AC_COMPUTE_INT: it can't handle numbers larger than LONG_MAX. I attempted to work around this limitation by changing Gnulib to assume that the correct value is 2**63 - 1 if it doesn't fit in 'long', and by merging the latest Gnulib into the emacs-26 branch. Please give it a try.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]