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awk: bitwise ops cast oprands and results to unsigned long,

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not signed. closes 4774.
This commit is contained in:
Denis Vlasenko 2008-08-28 23:16:58 +00:00
parent 996a61475a
commit 7cbcd1cbf4
1 changed files with 8 additions and 6 deletions
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14
editors/awk.c
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@ -2039,28 +2039,30 @@ static var *exec_builtin(node *op, var *res)
setvar_p(res, s); setvar_p(res, s);
break; break;
/* Bitwise ops must assume that operands are unsigned. GNU Awk 3.1.5:
* awk '{ print or(-1,1) }' gives "4.29497e+09", not "-2.xxxe+09" */
case B_an: case B_an:
setvar_i(res, (long)getvar_i(av[0]) & (long)getvar_i(av[1])); setvar_i(res, (unsigned long)getvar_i(av[0]) & (unsigned long)getvar_i(av[1]));
break; break;
case B_co: case B_co:
setvar_i(res, ~(long)getvar_i(av[0])); setvar_i(res, ~(unsigned long)getvar_i(av[0]));
break; break;
case B_ls: case B_ls:
setvar_i(res, (long)getvar_i(av[0]) << (long)getvar_i(av[1])); setvar_i(res, (unsigned long)getvar_i(av[0]) << (unsigned long)getvar_i(av[1]));
break; break;
case B_or: case B_or:
setvar_i(res, (long)getvar_i(av[0]) | (long)getvar_i(av[1])); setvar_i(res, (unsigned long)getvar_i(av[0]) | (unsigned long)getvar_i(av[1]));
break; break;
case B_rs: case B_rs:
setvar_i(res, (long)((unsigned long)getvar_i(av[0]) >> (unsigned long)getvar_i(av[1]))); setvar_i(res, (unsigned long)getvar_i(av[0]) >> (unsigned long)getvar_i(av[1]));
break; break;
case B_xo: case B_xo:
setvar_i(res, (long)getvar_i(av[0]) ^ (long)getvar_i(av[1])); setvar_i(res, (unsigned long)getvar_i(av[0]) ^ (unsigned long)getvar_i(av[1]));
break; break;
case B_lo: case B_lo: