jfbastien

Joined 13 years ago

Karma

422

Submissions

81

Member since

Nov 27

https://twitter.com/jfbastien

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Recent submissions

Comment · 2 years ago

Dang, will fix when I get home! Thanks Nick, and hi!

Comment · 2 years ago

10 years ago, a coworker had a really hard time root-causing a bug. I shoulder-debugged it by noticing the bit patterns: it was a miscompile of LLVM itself by GCC, where GCC was using an x87 fldl/fstpl move for a union { double; int64; }. The active member was actually the int64, and GCC chose FP moved based on what was the first member of the union... but the int64 happened to be the representation of SNaN, so the instructions transformed it quietly to a qNaN as part of moving. The "fix" was to change the order of the union's members in LLVM. The bug is still open, though it's had recent activity: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58416

Comment · 2 years ago

Typo, I fixed it in the new draft: https://isocpp.org/files/papers/D3477R1.html

Comment · 2 years ago

I added a mention of TI's hardware in my latest draft: https://isocpp.org/files/papers/D3477R1.html

Comment · 2 years ago

As mentioned by others, we've dropped trigraph and deprecated rand (and offer an alternative). I also have:

* p2809 Trivial infinite loops are not Undefined Behavior * p1152 Deprecating volatile * p0907 Signed Integers are Two's Complement * p2723 Zero-initialize objects of automatic storage duration * p2186 Removing Garbage Collection Support

So it is possible to change things!

Comment · 2 years ago

Yes, I'm trying to figure out which are still relevant and whether they target a modern C++, or intend to. I've been asking for a few years and haven't gotten positive answers. The only one that been brought up is TI, I added info in the updated draft: https://isocpp.org/files/papers/D3477R1.html

Comment · 2 years ago

Hi! Thanks for the interest on my proposal. I have an updated draft based on feedback I've received so far: https://isocpp.org/files/papers/D3477R1.html

Comment · 2 years ago

Hi! I'm JF. I half-jokingly threatened to do IEEE float in 2018 https://youtu.be/JhUxIVf1qok?si=QxZN_fIU2Th8vhxv&t=3250

I wouldn't want to lose the Linux humor tho!

Comment · 3 years ago

Having it in .rodata is much nice than having it in .text

Comment · 3 years ago

No, I’m a blade runner character.

Comment · 3 years ago

You sound like fun at parties :p I’m glad you liked the oration and technical content though!

Comment · 3 years ago

This is the way ;)

Comment · 3 years ago

I will do prompt injection in the next talk, just for you

Comment · 3 years ago

Good thing this was covered in the talk

Comment · 3 years ago

I’m glad you appreciated me saying exactly this in the talk