From 75c3e2cb72c17151b0f6f8f3b0f5d0956db91acf Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Mon, 8 May 2006 01:21:38 +0000 Subject: [PATCH] Fix DO REPEAT memory leaks. --- src/language/control/ChangeLog | 14 ++++ src/language/control/repeat.c | 147 ++++++++++++--------------------- 2 files changed, 68 insertions(+), 93 deletions(-) diff --git a/src/language/control/ChangeLog b/src/language/control/ChangeLog index 82404832..c2459426 100644 --- a/src/language/control/ChangeLog +++ b/src/language/control/ChangeLog @@ -1,3 +1,17 @@ +Sun May 7 18:18:33 2006 Ben Pfaff + + Fix memory leaks. + + * repeat.c: (parse_ids) Take pool parameter and allocate all + memory from pool. Reduce implementation from loop to single call + to parse_mixed_vars_pool(). + (store_numeric) Removed. + (add_replacement) New function. + (parse_numbers) Take pool parameter and allocate all memory from + pool. Require ranges to be in increasing order. + (parse_strings) Take pool parameter and allocate all memory from + pool. + Wed May 3 22:45:41 2006 Ben Pfaff Continue reforming procedure execution. In this phase, get rid of diff --git a/src/language/control/repeat.c b/src/language/control/repeat.c index bc4b8295..b6897361 100644 --- a/src/language/control/repeat.c +++ b/src/language/control/repeat.c @@ -85,9 +85,9 @@ static bool parse_specification (struct repeat_block *); static bool parse_lines (struct repeat_block *); static void create_vars (struct repeat_block *); -static int parse_ids (struct repeat_entry *); -static int parse_numbers (struct repeat_entry *); -static int parse_strings (struct repeat_entry *); +static int parse_ids (struct repeat_entry *, struct pool *); +static int parse_numbers (struct repeat_entry *, struct pool *); +static int parse_strings (struct repeat_entry *, struct pool *); static void do_repeat_filter (struct string *line, void *block); static bool do_repeat_read (struct string *line, char **file_name, @@ -161,11 +161,11 @@ parse_specification (struct repeat_block *block) /* Get the details of the variable's possible values. */ if (token == T_ID) - count = parse_ids (e); + count = parse_ids (e, block->pool); else if (lex_is_number ()) - count = parse_numbers (e); + count = parse_numbers (e, block->pool); else if (token == T_STRING) - count = parse_strings (e); + count = parse_strings (e, block->pool); else { lex_error (NULL); @@ -173,6 +173,11 @@ parse_specification (struct repeat_block *block) } if (count == 0) return false; + if (token != '/' && token != '.') + { + lex_error (NULL); + return false; + } /* If this is the first variable then it defines how many replacements there must be; otherwise enforce this number of @@ -332,65 +337,41 @@ create_vars (struct repeat_block *block) /* Parses a set of ids for DO REPEAT. */ static int -parse_ids (struct repeat_entry *e) +parse_ids (struct repeat_entry *e, struct pool *pool) { - size_t i; size_t n = 0; - e->type = VAR_NAMES; - e->replacement = NULL; - - do - { - char **names; - size_t nnames; - - if (!parse_mixed_vars (&names, &nnames, PV_NONE)) - return 0; - - e->replacement = xnrealloc (e->replacement, - nnames + n, sizeof *e->replacement); - for (i = 0; i < nnames; i++) - { - e->replacement[n + i] = xstrdup (names[i]); - free (names[i]); - } - free (names); - n += nnames; - } - while (token != '/' && token != '.'); - - return n; + return parse_mixed_vars_pool (pool, &e->replacement, &n, PV_NONE) ? n : 0; } -/* Stores VALUE into *REPL. */ -static inline void -store_numeric (char **repl, long value) +/* Adds STRING to E's list of replacements, which has *USED + elements and has room for *ALLOCATED. Allocates memory from + POOL. */ +static void +add_replacement (char *string, + struct repeat_entry *e, struct pool *pool, + size_t *used, size_t *allocated) { - *repl = xmalloc (INT_STRLEN_BOUND (value) + 1); - sprintf (*repl, "%ld", value); + if (*used == *allocated) + e->replacement = pool_2nrealloc (pool, e->replacement, allocated, + sizeof *e->replacement); + e->replacement[(*used)++] = string; } /* Parses a list of numbers for DO REPEAT. */ static int -parse_numbers (struct repeat_entry *e) +parse_numbers (struct repeat_entry *e, struct pool *pool) { - /* First and last numbers for TO, plus the step factor. */ - long a, b; - - /* Alias to e->replacement. */ - char **array; - - /* Number of entries in array; maximum number for this allocation - size. */ - int n, m; - - n = m = 0; + size_t used = 0; + size_t allocated = 0; + e->type = OTHER; - e->replacement = array = NULL; + e->replacement = NULL; do { + long a, b, i; + /* Parse A TO B into a, b. */ if (!lex_force_int ()) return 0; @@ -403,78 +384,58 @@ parse_numbers (struct repeat_entry *e) if (!lex_force_int ()) return 0; b = lex_integer (); - + if (b < a) + { + msg (SE, _("%ld TO %ld is an invalid range."), a, b); + return 0; + } lex_get (); } - else b = a; + else + b = a; - if (n + (abs (b - a) + 1) > m) - { - m = n + (abs (b - a) + 1) + 16; - e->replacement = array = xnrealloc (array, - m, sizeof *e->replacement); - } + for (i = a; i <= b; i++) + add_replacement (pool_asprintf (pool, "%ld", i), + e, pool, &used, &allocated); - if (a == b) - store_numeric (&array[n++], a); - else - { - long iter; - - if (a < b) - for (iter = a; iter <= b; iter++) - store_numeric (&array[n++], iter); - else - for (iter = a; iter >= b; iter--) - store_numeric (&array[n++], iter); - } lex_match (','); } while (token != '/' && token != '.'); - e->replacement = xrealloc (array, n * sizeof *e->replacement); - return n; + return used; } /* Parses a list of strings for DO REPEAT. */ int -parse_strings (struct repeat_entry *e) +parse_strings (struct repeat_entry *e, struct pool *pool) { - char **string; - int n, m; - + size_t used = 0; + size_t allocated = 0; + e->type = OTHER; - string = e->replacement = NULL; - n = m = 0; + e->replacement = NULL; do { + char *string; + if (token != T_STRING) { - int i; msg (SE, _("String expected.")); - for (i = 0; i < n; i++) - free (string[i]); - free (string); return 0; } - if (n + 1 > m) - { - m += 16; - e->replacement = string = xnrealloc (string, - m, sizeof *e->replacement); - } - string[n++] = lex_token_representation (); - lex_get (); + string = lex_token_representation (); + pool_register (pool, free, string); + add_replacement (string, e, pool, &used, &allocated); + lex_get (); lex_match (','); } while (token != '/' && token != '.'); - e->replacement = xnrealloc (string, n, sizeof *e->replacement); - return n; + return used; } int -- 2.30.2