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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)
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Merged revisions 370642 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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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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6
pbx/pbx_lua.c
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@@ -303,7 +303,7 @@ static int lua_get_variable_value(lua_State *L)
{
struct ast_channel *chan;
char *value = NULL, *name;
char *workspace = alloca(LUA_BUF_SIZE);
char *workspace = ast_alloca(LUA_BUF_SIZE);
int autoservice;
workspace[0] = '\0';
@@ -561,7 +561,7 @@ static int lua_get_variable(lua_State *L)
struct ast_channel *chan;
const char *name = luaL_checkstring(L, 2);
char *value = NULL;
char *workspace = alloca(LUA_BUF_SIZE);
char *workspace = ast_alloca(LUA_BUF_SIZE);
workspace[0] = '\0';
lua_getfield(L, LUA_REGISTRYINDEX, "channel");
@@ -1080,7 +1080,7 @@ static char *lua_read_extensions_file(lua_State *L, long *size)
FILE *f;
int error_func;
char *data;
char *path = alloca(strlen(config) + strlen(ast_config_AST_CONFIG_DIR) + 2);
char *path = ast_alloca(strlen(config) + strlen(ast_config_AST_CONFIG_DIR) + 2);
sprintf(path, "%s/%s", ast_config_AST_CONFIG_DIR, config);
if (!(f = fopen(path, "r"))) {