From 4ecc384f99e5f4c5a320714484866fb48699245f Mon Sep 17 00:00:00 2001 From: Cody Tapscott Date: Sun, 23 Oct 2022 23:17:23 -0700 Subject: [PATCH] Fix long double on x86_64-windows The larger alignment on this platform means that long double reports a sizeof 16 bytes, but it's underlying size is really just the 10 bytes of `f80` C doesn't give us a way to see the "underlying" size of a type, so this has to be caught by hand or by monitoring runtime memory. Luckily, x86 and x86-64 are the only platforms that seem to use a non-power-of-two type like this. --- src/type.zig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/type.zig b/src/type.zig index d78e2909b5..8f2cd7c54d 100644 --- a/src/type.zig +++ b/src/type.zig @@ -6827,7 +6827,7 @@ pub const CType = enum { }, .longlong, .ulonglong, .double => return 64, .longdouble => switch (target.abi) { - .gnu, .gnuilp32, .cygnus => return 128, + .gnu, .gnuilp32, .cygnus => return 80, else => return 64, }, },