New release

_posts/2021-07-27-Released-Cyclone-Scheme-0.31.0.md

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+---
+layout: post
+title: Released Cyclone Scheme 0.31.0
+excerpt: This release fixes a number of critical bugs.
+---
+
+### Bug Fixes
+
+#### Compiler
+
+- Properly handle vectors literals at the top level of compiled code. Previously this could lead to segmentation faults (!!) at runtime.
+- Fixed an off-by-one error unpacking arguments when calling a primitive as the continuation after a garbage collection.
+
+#### Base Library
+
+- Fixed `read-line` to prevent data loss when used in conjunction with other I/O functions (such as `read-char`) to read data from the same port. This was because the previous version of `read-line` used a different internal buffer than our other I/O functions.
+- Fixed a bug in `make-list` that consumed all available memory when passing a negative list length.
+- Allow a record type to contain fields that are not initialized by the constructor.
+- Built out `numerator` and `denominator` with code conforming to R7RS.
+
+#### SRFI 18 - Multithreading Library
+
+- Updated `thread-start!` to return the given thread object, per SRFI 18.
+- `thread-join!` now returns the result of the thread it was waiting on, per SRFI 18.
+
+#### C Compiler Warnings
+
+- Eliminate clang compiler warnings referencing `EOF` when building the runtime.
+- Updated runtime so the C compiler will no longer generate warnings regarding the string comparisons in `Cyc_st_add`. Previously this could result in these warnings being spammed to the console when compiling code using Cyclone.
+- Properly escape question marks within strings in generated C code to avoid trigraphs.
+- Avoid an "unused variable" warning from the C compiler when compiling certain recursive functions.
+