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Since these are just interpreted comments, there's 0 impact on actual code.
This removes all lines that match /* vim: set(.*)tw=80: */ with S&R -- there are
a few others scattered around which will be removed manually in a second part.
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https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Compiling_32-bit_Firefox_on_a_Linux_64-bit_OS
Setting this up turned out to be easier than I thought it would be. All I had to do was apply these instructions in reverse and add the following to my .mozconfig file:
CC="gcc -m64"
CXX="g++ -m64"
AS="gas --64"
ac_add_options --target=x86_64-pc-solaris2.11
export PKG_CONFIG_PATH=/usr/lib/amd64/pkgconfig
ac_add_options --libdir=/usr/lib/amd64
ac_add_options --x-libraries=/usr/lib/amd64
Most of these changes were fairly trivial, just requiring me to make a few of the changes I made earlier conditional on a 32-bit build. The biggest challenge was figuring out why the JavaScript engine triggered a segfault everytime it tried to allocate memory. But this patch fixes it:
https://github.com/OpenIndiana/oi-userland/blob/oi/hipster/components/web/firefox/patches/patch-js_src_gc_Memory.cpp.patch
Turns out that Solaris on AMD64 handles memory management in a fairly unusual way with a segmented memory model, but it's not that different from what we see on other 64-bit processors. In fact, I saw a SPARC crash for a similar reason, and noticed that it looked just like mine except the numbers in the first segment were reversed. Having played around with hex editors before, I had a feeling I might be dealing with a little-endian version of a big-endian problem, but I didn't expect that knowledge to actually yield an easy solution.
https://bugzilla.mozilla.org/show_bug.cgi?id=577056
https://www.oracle.com/technetwork/server-storage/solaris10/solaris-memory-135224.html
As far as I can tell, this was the last barrier to an AMD64 Solaris build of Pale Moon.
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casting getpid() to int.
https://bugzilla.mozilla.org/show_bug.cgi?id=535106
https://bugzilla.mozilla.org/show_bug.cgi?id=1359841
Like many parts of the busted Solaris support, this one has its origins in the pre-Firefox days. Bug 535106, another Mozilla suite bug. It keeps coming up because the core issue is never addressed, the fact that nsTSubstring doesn't know how to handle pid_t. I think the explicit cast to int is a band-aid they use because they know if they touch that substring header file to make it handle pid_t, they'll probably be asked to fix all the other problems with it. I honestly think it just works by accident on other platforms because it's implicitly cast to signed or unsigned int, even though the POSIX standard says pid_t can be either long or int, and work as either a signed or unsigned integer. Whatever the case may be, it's handled better on Solaris now than it was.
Ironically enough, the main point of having pid_t rather than just having pids be int or something is to hide this little implementation detail so you can just use pid_t for the return type in portable code without having to worry about what it is on a specific platform. The unfortunate way Mozilla implemented string functions turns that on its head and makes the good things about pid_t into liabilities rather than assets.
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