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fix for posix semantics for the := word expansion when assigning array elements

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This commit is contained in:
Chet Ramey
2021-12-14 14:18:00 -05:00
parent 567c0bc2ed
commit 5f2dd5ff95
17 changed files with 165 additions and 23 deletions
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subst.c
+15 -7
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@@ -3308,7 +3308,7 @@ do_assignment_internal (word, expand)
ASSIGN_RETURN (0);
}
aflags |= ASS_ALLOWALLSUB; /* allow a[@]=value for existing associative arrays */
entry = assign_array_element (name, value, aflags);
entry = assign_array_element (name, value, aflags, (char **)0);
if (entry == 0)
ASSIGN_RETURN (0);
}
@@ -7227,8 +7227,8 @@ parameter_brace_expand_rhs (name, value, op, quoted, pflags, qdollaratp, hasdoll
{
WORD_DESC *w;
WORD_LIST *l, *tl;
char *t, *t1, *temp, *vname;
int l_hasdollat, sindex;
char *t, *t1, *temp, *vname, *newval;
int l_hasdollat, sindex, arrayref;
SHELL_VAR *v;
/*itrace("parameter_brace_expand_rhs: %s:%s pflags = %d", name, value, pflags);*/
@@ -7374,9 +7374,13 @@ parameter_brace_expand_rhs (name, value, op, quoted, pflags, qdollaratp, hasdoll
}
}
arrayref = 0;
#if defined (ARRAY_VARS)
if (valid_array_reference (vname, 0))
v = assign_array_element (vname, t1, 0);
{
v = assign_array_element (vname, t1, ASS_ALLOWALLSUB, &newval);
arrayref = 1;
}
else
#endif /* ARRAY_VARS */
v = bind_variable (vname, t1, 0);
@@ -7399,16 +7403,20 @@ parameter_brace_expand_rhs (name, value, op, quoted, pflags, qdollaratp, hasdoll
stupidly_hack_special_variables (vname);
if (vname != name)
free (vname);
/* "In all cases, the final value of parameter shall be substituted." */
if (shell_compatibility_level > 51)
{
FREE (t1);
#if defined (ARRAY_VARS)
t1 = arrayref ? newval : get_variable_value (v);
#else
t1 = value_cell (v);
#endif
}
if (vname != name)
free (vname);
/* From Posix group discussion Feb-March 2010. Issue 7 0000221 */
/* If we are double-quoted or if we are not going to be performing word