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

layout	title	excerpt
post	Released Cyclone Scheme 0.31.0	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.