From 1cd49c43f340e4de62922356ed859ee806e52f6f Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Mon, 30 Nov 2020 01:24:57 -0700 Subject: [PATCH] Remove some dead code from evaluate_subexp_standard I noticed that in the OP_ARRAY case in evaluate_subexp_standard, "index_pc" is read but never set. This dead code then guards the only call to init_array_element, so this can be removed as well. gdb/ChangeLog 2020-11-30 Tom Tromey * eval.c (init_array_element): Remove. (evaluate_subexp_standard) : Remove "index_pc". --- gdb/ChangeLog | 5 ++++ gdb/eval.c | 64 ++++++--------------------------------------------- 2 files changed, 12 insertions(+), 57 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 4cf41fe0bc7..813305d0fdc 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2020-11-30 Tom Tromey + + * eval.c (init_array_element): Remove. + (evaluate_subexp_standard) : Remove "index_pc". + 2020-11-29 Hannes Domani PR tui/26973 diff --git a/gdb/eval.c b/gdb/eval.c index 407d4b4ac59..d02813eec52 100644 --- a/gdb/eval.c +++ b/gdb/eval.c @@ -57,10 +57,6 @@ static struct value *evaluate_struct_tuple (struct value *, struct expression *, int *, enum noside, int); -static LONGEST init_array_element (struct value *, struct value *, - struct expression *, int *, enum noside, - LONGEST, LONGEST); - struct value * evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos, enum noside noside) @@ -337,39 +333,6 @@ evaluate_struct_tuple (struct value *struct_val, return struct_val; } -/* Recursive helper function for setting elements of array tuples. - The target is ARRAY (which has bounds LOW_BOUND to HIGH_BOUND); the - element value is ELEMENT; EXP, POS and NOSIDE are as usual. - Evaluates index expressions and sets the specified element(s) of - ARRAY to ELEMENT. Returns last index value. */ - -static LONGEST -init_array_element (struct value *array, struct value *element, - struct expression *exp, int *pos, - enum noside noside, LONGEST low_bound, LONGEST high_bound) -{ - LONGEST index; - int element_size = TYPE_LENGTH (value_type (element)); - - if (exp->elts[*pos].opcode == BINOP_COMMA) - { - (*pos)++; - init_array_element (array, element, exp, pos, noside, - low_bound, high_bound); - return init_array_element (array, element, - exp, pos, noside, low_bound, high_bound); - } - else - { - index = value_as_long (evaluate_subexp (nullptr, exp, pos, noside)); - if (index < low_bound || index > high_bound) - error (_("tuple index out of range")); - memcpy (value_contents_raw (array) + (index - low_bound) * element_size, - value_contents (element), element_size); - } - return index; -} - /* Promote value ARG1 as appropriate before performing a unary operation on this argument. If the result is not appropriate for any particular language then it @@ -1433,30 +1396,17 @@ evaluate_subexp_standard (struct type *expect_type, for (tem = nargs; --nargs >= 0;) { struct value *element; - int index_pc = 0; element = evaluate_subexp (element_type, exp, pos, noside); if (value_type (element) != element_type) element = value_cast (element_type, element); - if (index_pc) - { - int continue_pc = *pos; - - *pos = index_pc; - index = init_array_element (array, element, exp, pos, noside, - low_bound, high_bound); - *pos = continue_pc; - } - else - { - if (index > high_bound) - /* To avoid memory corruption. */ - error (_("Too many array elements")); - memcpy (value_contents_raw (array) - + (index - low_bound) * element_size, - value_contents (element), - element_size); - } + if (index > high_bound) + /* To avoid memory corruption. */ + error (_("Too many array elements")); + memcpy (value_contents_raw (array) + + (index - low_bound) * element_size, + value_contents (element), + element_size); index++; } return array; -- 2.30.2