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Marked alleged use of uninitialized memory reported by valgrind

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This commit is contained in:
Thomas Schmitt 2009-04-30 06:56:47 +00:00
parent d036801e85
commit 4d35664d90
2 changed files with 37 additions and 3 deletions
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2
libburn/trunk/cdrskin/cdrskin_timestamp.h
View File

@ -1 +1 @@
#define Cdrskin_timestamP "2009.03.18.172512"
#define Cdrskin_timestamP "2009.04.30.065653"

38
libburn/trunk/libburn/write.c
View File

@ -1845,6 +1845,13 @@ int burn_stdio_read_source(struct burn_source *source, char *buf, int bufsize,
int burn_stdio_write(int fd, char *buf, int count, struct burn_drive *d,
int flag)
{
if (d->cancel)
return 0;
/*
fprintf(stderr, "libburn_DEBUG: write(%d, %lX, %d)\n",
fd, (unsigned long) buf, count);
*/
if (write(fd, buf, count) != count) {
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020148,
@ -2093,7 +2100,7 @@ void burn_disc_write_sync(struct burn_write_opts *o, struct burn_disc *disc)
{
struct cue_sheet *sheet;
struct burn_drive *d = o->drive;
struct buffer buf, *buffer_mem = o->drive->buffer;
struct buffer *buffer_mem = o->drive->buffer;
struct burn_track *lt, *t;
int first = 1, i, ret, lba, nwa = 0, multi_mem;
off_t default_size;
@ -2113,8 +2120,33 @@ void burn_disc_write_sync(struct burn_write_opts *o, struct burn_disc *disc)
else
d->stream_recording_start = 0;
d->buffer = &buf;
d->buffer = calloc(sizeof(struct buffer), 1);
if (d->buffer == NULL)
goto fail_wo_sync;
/* >>> ts A90321
memset(d->buffer, 0, sizeof(struct buffer));
fprintf(stderr, "libburn_DEBUG: d->buffer = %lX , size = %d\n",
(unsigned long) d->buffer, (int) sizeof(struct buffer));
calloc() seems not to have the desired effect. valgrind warns:
==18251== Syscall param write(buf) points to uninitialised byte(s)
==18251== at 0x5071DEB: (within /lib64/libpthread-2.5.so)
==18251== by 0x4723FA: burn_stdio_write (write.c:1850)
==18251== by 0x4725DC: burn_stdio_mmc_write (write.c:1894)
==18251== by 0x483B7A: get_sector (sector.c:229)
==18251== by 0x484F11: sector_data (sector.c:639)
==18251== by 0x4729FE: burn_stdio_write_track (write.c:2012)
==18251== by 0x472CF4: burn_stdio_write_sync (write.c:2072)
==18251== by 0x472E8D: burn_disc_write_sync (write.c:2125) <<< we are here
==18251== by 0x460254: write_disc_worker_func (async.c:514)
==18251== by 0x506B09D: start_thread (in /lib64/libpthread-2.5.so)
==18251== by 0x55484CC: clone (in /lib64/libc-2.5.so)
*/
d->rlba = -150;
d->toc_temp = 9;
@ -2312,6 +2344,8 @@ fail_wo_sync:;
d->busy = BURN_DRIVE_IDLE;
ex:;
d->do_stream_recording = 0;
if (d->buffer != NULL)
free((char *) d->buffer);
d->buffer = buffer_mem;
return;
}