4 Commits

Author	SHA1	Message	Date
Jilles Tjoelker	3937fc9c26	sh: Apply set -u to variables in arithmetic. ... Note that this only applies to variables that are actually used. Things like (0 && unsetvar) do not cause an error. Exp-run done by: pav (with some other sh(1) changes)	2011-05-04 22:12:22 +00:00
Jilles Tjoelker	976018d24f	sh: Fix some warnings in code for arithmetic expressions. ... Submitted by: eadler	2011-03-05 13:27:13 +00:00
Jilles Tjoelker	e9749129ad	sh: Detect dividing the smallest integer by -1. ... This overflows and on some architectures such as amd64 it generates SIGFPE. Generate an error on all architectures.	2011-02-12 23:44:05 +00:00
Jilles Tjoelker	6262b84eee	sh: Import arithmetic expression code from dash. ... New features: * proper lazy evaluation of || and && * ?: ternary operator * executable is considerably smaller (8K on i386) because lex and yacc are no longer used Differences from dash: * arith_t instead of intmax_t * imaxdiv() not used * unset or null variables default to 0 * let/exp builtin (undocumented, will probably be removed later) Obtained from: dash	2011-02-08 23:18:06 +00:00