MMIX Bug Report printf
Content
MMIXware Version
mmix-20110831Bug Reported
Initial: 9/2/2011Author
Andreas Scherer and Martin RuckertDescription
Format-less uses of printf() produces warnings by some C compilers. Two change files by Andreas Scherer fix this: mmix-sim.ch and mmix-pipe.ch. The originals are hosted in the local branch of https://github.com/ascherer/mmix/.The warnings uncover a bug in mmix-sim.w on line 3099, where the command_buf is taken from an input file. If the input file contains substrings like "%s" or "%d", it can crash mmix or cause other unexpected behaviour.
Proposed Patch
@x
if (command_buf[0]==' ') printf(command_buf);
@y
if (command_buf[0]==' ') printf("%s",command_buf);
@z
