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Clean up and ensure proper usage of alloca()

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This replaces all calls to alloca() with ast_alloca() which calls gcc's
__builtin_alloca() to avoid BSD semantics and removes all NULL checks
on memory allocated via ast_alloca() and ast_strdupa().

(closes issue ASTERISK-20125)
Review: https://reviewboard.asterisk.org/r/2032/
Patch-by: Walter Doekes (wdoekes)
........

Merged revisions 370642 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 370643 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370655 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kinsey Moore
2012-07-31 20:21:43 +00:00
parent 6c23a60f80
commit 9b16c8b0f6
64 changed files with 317 additions and 399 deletions
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8
main/utils.c
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@@ -1041,7 +1041,7 @@ int ast_pthread_create_stack(pthread_t *thread, pthread_attr_t *attr, void *(*st
#endif
if (!attr) {
attr = alloca(sizeof(*attr));
attr = ast_alloca(sizeof(*attr));
pthread_attr_init(attr);
}
@@ -1089,7 +1089,7 @@ int ast_pthread_create_detached_stack(pthread_t *thread, pthread_attr_t *attr, v
int res;
if (!attr) {
attr = alloca(sizeof(*attr));
attr = ast_alloca(sizeof(*attr));
pthread_attr_init(attr);
attr_destroy = 1;
}
@@ -1982,7 +1982,7 @@ int ast_mkdir(const char *path, int mode)
int len = strlen(path), count = 0, x, piececount = 0;
char *tmp = ast_strdupa(path);
char **pieces;
char *fullpath = alloca(len + 1);
char *fullpath = ast_alloca(len + 1);
int res = 0;
for (ptr = tmp; *ptr; ptr++) {
@@ -1991,7 +1991,7 @@ int ast_mkdir(const char *path, int mode)
}
/* Count the components to the directory path */
pieces = alloca(count * sizeof(*pieces));
pieces = ast_alloca(count * sizeof(*pieces));
for (ptr = tmp; *ptr; ptr++) {
if (*ptr == '/') {
*ptr = '\0';