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Author	SHA1	Message	Date
Jilles Tjoelker	aac5464b61	sh: Restore $((x)) error checking after fix for $((-9223372036854775808)) SVN r342880 was designed to fix $((-9223372036854775808)) and things like $((0x8000000000000000)) but also broke error detection for values of variables without dollar sign ($((x))). For compatibility, overflow in plain literals continues to be ignored and the value is clamped to the boundary (except 9223372036854775808 which is changed to -9223372036854775808). Reviewed by: se (although he would like error checking to be removed) MFC after: 2 weeks X-MFC-with: r342880 Differential Revision: https://reviews.freebsd.org/D18926	2019-02-10 22:23:05 +00:00
Jilles Tjoelker	22ea47ec90	sh: Fix compiler warnings related to duplicate or missing declarations.	2015-03-01 21:46:55 +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

Author

SHA1

Message

Date

Jilles Tjoelker

aac5464b61

sh: Restore $((x)) error checking after fix for $((-9223372036854775808))

SVN r342880 was designed to fix $((-9223372036854775808)) and things like
$((0x8000000000000000)) but also broke error detection for values of
variables without dollar sign ($((x))).

For compatibility, overflow in plain literals continues to be ignored and
the value is clamped to the boundary (except 9223372036854775808 which is
changed to -9223372036854775808).

Reviewed by:	se (although he would like error checking to be removed)
MFC after:	2 weeks
X-MFC-with:	r342880
Differential Revision:	https://reviews.freebsd.org/D18926

2019-02-10 22:23:05 +00:00

Jilles Tjoelker

22ea47ec90

sh: Fix compiler warnings related to duplicate or missing declarations.

2015-03-01 21:46:55 +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

3 Commits