A random generator of C programs.
Csmith is a tool that can generate random C programs that statically and dynamically conform to the C99 standard. It is useful for stress-testing compilers, static analyzers, and other tools that process C code. Csmith has found bugs in every tool that it has tested, and has been used to find and report more than 400 previously unknown compiler bugs.
2.3.0bin/compiler_test.plbin/csmithbin/launchn.plaarch64-darwinaarch64-genodeaarch64-linuxaarch64-netbsdaarch64-noneaarch64_be-nonearm-nonearmv5tel-linuxarmv6l-linuxarmv6l-netbsdarmv6l-nonearmv7a-darwinarmv7a-linuxarmv7a-netbsdarmv7l-linuxarmv7l-netbsdavr-nonei686-cygwini686-darwini686-freebsd13i686-genodei686-linuxi686-netbsdi686-nonei686-openbsdi686-windowsjavascript-ghcjsloongarch64-linuxm68k-linuxm68k-netbsdm68k-nonemicroblaze-linuxmicroblaze-nonemicroblazeel-linuxmicroblazeel-nonemips-linuxmips-nonemips64-linuxmips64-nonemips64el-linuxmipsel-linuxmipsel-netbsdmmix-mmixwaremsp430-noneor1k-nonepowerpc-netbsdpowerpc-nonepowerpc64-linuxpowerpc64le-linuxpowerpcle-noneriscv32-linuxriscv32-netbsdriscv32-noneriscv64-linuxriscv64-netbsdriscv64-nonerx-nones390-linuxs390-nones390x-linuxs390x-nonevc4-nonewasm32-wasiwasm64-wasix86_64-cygwinx86_64-darwinx86_64-freebsd13x86_64-genodex86_64-linuxx86_64-netbsdx86_64-nonex86_64-openbsdx86_64-redoxx86_64-solarisx86_64-windows