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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/dsp.c
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@@ -1336,13 +1336,13 @@ static int ast_dsp_silence_noise_with_energy(struct ast_dsp *dsp, struct ast_fra
len = f->datalen;
switch (f->subclass.format.id) {
case AST_FORMAT_ULAW:
s = alloca(len * 2);
s = ast_alloca(len * 2);
for (x = 0;x < len; x++) {
s[x] = AST_MULAW(odata[x]);
}
break;
case AST_FORMAT_ALAW:
s = alloca(len * 2);
s = ast_alloca(len * 2);
for (x = 0;x < len; x++) {
s[x] = AST_ALAW(odata[x]);
}
@@ -1406,13 +1406,13 @@ struct ast_frame *ast_dsp_process(struct ast_channel *chan, struct ast_dsp *dsp,
switch (af->subclass.format.id) {
case AST_FORMAT_ULAW:
case AST_FORMAT_TESTLAW:
shortdata = alloca(af->datalen * 2);
shortdata = ast_alloca(af->datalen * 2);
for (x = 0;x < len; x++) {
shortdata[x] = AST_MULAW(odata[x]);
}
break;
case AST_FORMAT_ALAW:
shortdata = alloca(af->datalen * 2);
shortdata = ast_alloca(af->datalen * 2);
for (x = 0; x < len; x++) {
shortdata[x] = AST_ALAW(odata[x]);
}