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-rw-r--r--ChangeLog7
-rw-r--r--libio/Makefile2
-rw-r--r--libio/bug-rewind.c52
-rw-r--r--libio/wfileops.c30
-rw-r--r--linuxthreads_db/ChangeLog8
-rw-r--r--linuxthreads_db/td_ta_map_id2thr.c14
-rw-r--r--linuxthreads_db/td_ta_map_lwp2thr.c11
-rw-r--r--linuxthreads_db/td_ta_thr_iter.c31
-rw-r--r--linuxthreads_db/td_thr_get_info.c19
9 files changed, 163 insertions, 11 deletions
diff --git a/ChangeLog b/ChangeLog
index 7dab94b00b..c17f7cf01b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2002-07-15 Ulrich Drepper <drepper@redhat.com>
+
+ * libio/wfileops.c (_IO_wfile_seekoff): Reposition wide pointers
+ and adjust state for seek position. [PR libc/4070]
+ * libio/Makefile (tests): Add bug-rewind.
+ * libio/bug-rewind.c: New file.
+
2002-07-12 Philip Blundell <philb@gnu.org>
* sysdeps/generic/backtrace.c (FIRST_FRAME_POINTER): New macro.
diff --git a/libio/Makefile b/libio/Makefile
index f4c5095e5f..cb390a53d6 100644
--- a/libio/Makefile
+++ b/libio/Makefile
@@ -50,7 +50,7 @@ tests = tst_swprintf tst_wprintf tst_swscanf tst_wscanf tst_getwc tst_putwc \
tst_wprintf2 tst-widetext test-fmemopen tst-ext tst-fopenloc \
tst-fgetws tst-ungetwc1 tst-ungetwc2 tst-swscanf tst-sscanf \
tst-mmap-setvbuf bug-ungetwc1 bug-ungetwc2 tst-atime tst-eof \
- tst-freopen
+ tst-freopen bug-rewind
test-srcs = test-freopen
all: # Make this the default target; it will be defined in Rules.
diff --git a/libio/bug-rewind.c b/libio/bug-rewind.c
new file mode 100644
index 0000000000..2a30d28e25
--- /dev/null
+++ b/libio/bug-rewind.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <wchar.h>
+
+#define PASSED 0
+#define FAILED 3
+
+
+int
+main (void)
+{
+ FILE *fptr;
+ char arg1;
+ char arg2;
+ int ret, ret1, ret2, result, num;
+
+ ret1 = 0;
+ ret2 = 0;
+
+ if ((fptr = fopen ("./wrewind.dat", "w+")) == NULL)
+ {
+ printf ("Unable to open file.\n");
+ return 1;
+ }
+
+ if ((ret = fwprintf (fptr, L"cderf")) <= 0)
+ {
+ printf ("Unable to write to file with fwprintf().\n");
+ fclose (fptr);
+ return 2;
+ }
+
+ rewind (fptr);
+ ret1 = fwscanf (fptr, L"%c%c", &arg1, &arg2);
+
+ rewind (fptr);
+ ret2 = fwscanf (fptr, L"%c%n%c", &arg1, &num, &arg2);
+
+ if (arg2 != 'd')
+ {
+ result = FAILED;
+ printf ("rewind after first fwscanf failed\n");
+ }
+ else
+ {
+ printf ("Passed\n");
+ result = PASSED;
+ }
+
+
+ fclose (fptr);
+ return result;
+}
diff --git a/libio/wfileops.c b/libio/wfileops.c
index b633daf51c..04a8f27834 100644
--- a/libio/wfileops.c
+++ b/libio/wfileops.c
@@ -635,6 +635,10 @@ _IO_wfile_seekoff (fp, offset, dir, mode)
#endif
if (rel_offset <= fp->_IO_read_end - fp->_IO_read_base)
{
+ enum __codecvt_result status;
+ struct _IO_codecvt *cd = fp->_codecvt;
+ const char *read_ptr_copy;
+
fp->_IO_read_ptr = fp->_IO_read_base + rel_offset;
_IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
@@ -643,11 +647,33 @@ _IO_wfile_seekoff (fp, offset, dir, mode)
pointer is somewhere in the current external buffer
this does not mean we can convert this whole buffer
at once fitting in the internal buffer. */
+ fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state;
+ read_ptr_copy = fp->_IO_read_base;
+ fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_base;
do
{
-
+ wchar_t buffer[1024];
+ wchar_t *ignore;
+ status = (*cd->__codecvt_do_in) (cd,
+ &fp->_wide_data->_IO_state,
+ read_ptr_copy,
+ fp->_IO_read_ptr,
+ &read_ptr_copy,
+ buffer,
+ buffer
+ + (sizeof (buffer)
+ / sizeof (buffer[0])),
+ &ignore);
+ if (status != __codecvt_ok && status != __codecvt_partial)
+ {
+ fp->_flags |= _IO_ERR_SEEN;
+ goto dumb;
+ }
}
- while (0);
+ while (read_ptr_copy != fp->_IO_read_ptr);
+
+ fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end
+ = fp->_wide_data->_IO_read_base;
_IO_mask_flags (fp, 0, _IO_EOF_SEEN);
goto resync;
diff --git a/linuxthreads_db/ChangeLog b/linuxthreads_db/ChangeLog
index c5cbfba126..774afe6e2a 100644
--- a/linuxthreads_db/ChangeLog
+++ b/linuxthreads_db/ChangeLog
@@ -1,3 +1,11 @@
+2002-07-14 Ulrich Drepper <drepper@redhat.com>
+
+ * td_ta_map_id2thr.c: Begin fixing implementation for libpthread with
+ TLS support.
+ * td_ta_map_lwp2thr.c: Likewise.
+ * td_ta_thr_iter.c: Likewise.
+ * td_thr_get_info.c: Likewise.
+
2002-07-10 Ulrich Drepper <drepper@redhat.com>
* Versions [libthread_db] (GLIBC_2.3): Add td_thr_tls_get_addr.
diff --git a/linuxthreads_db/td_ta_map_id2thr.c b/linuxthreads_db/td_ta_map_id2thr.c
index e6be74ff19..ddeb2d3c4a 100644
--- a/linuxthreads_db/td_ta_map_id2thr.c
+++ b/linuxthreads_db/td_ta_map_id2thr.c
@@ -45,7 +45,19 @@ td_ta_map_id2thr (const td_thragent_t *ta, pthread_t pt, td_thrhandle_t *th)
/* Test whether this entry is in use. */
if (phc.h_descr == NULL)
- return TD_BADTH;
+ {
+ if (pt % pthread_threads_max == 0)
+ {
+ /* The initial thread always exists but the thread library
+ might not yet be initialized. */
+ th->th_ta_p = (td_thragent_t *) ta;
+ th->th_unique = NULL;
+
+ return TD_OK;
+ }
+
+ return TD_BADTH;
+ }
/* Next test: get the descriptor to see whether this is not an old
thread handle. */
diff --git a/linuxthreads_db/td_ta_map_lwp2thr.c b/linuxthreads_db/td_ta_map_lwp2thr.c
index 1fc614cc21..dd2fcbfe4e 100644
--- a/linuxthreads_db/td_ta_map_lwp2thr.c
+++ b/linuxthreads_db/td_ta_map_lwp2thr.c
@@ -76,7 +76,16 @@ td_ta_map_lwp2thr (const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
return TD_OK;
}
- }
+ }
+ else if (cnt == 0)
+ {
+ /* The initial thread always exists. But it might not yet be
+ initialized. Construct a value. */
+ th->th_ta_p = (td_thragent_t *) ta;
+ th->th_unique = NULL;
+
+ return TD_OK;
+ }
return TD_NOLWP;
}
diff --git a/linuxthreads_db/td_ta_thr_iter.c b/linuxthreads_db/td_ta_thr_iter.c
index 7d7085870f..977711261e 100644
--- a/linuxthreads_db/td_ta_thr_iter.c
+++ b/linuxthreads_db/td_ta_thr_iter.c
@@ -31,6 +31,37 @@ handle_descr (const td_thragent_t *ta, td_thr_iter_f *callback,
size_t sizeof_descr = ta->sizeof_descr;
td_thrhandle_t th;
+ if (descr == NULL)
+ {
+ /* No descriptor (yet). */
+ if (cnt == 0)
+ {
+ /* This is the main thread. Create a fake descriptor. */
+ memset (&pds, '\0', sizeof (pds));
+
+ /* Empty thread descriptor the thread library would create. */
+ pds.p_header.data.self = &pds;
+ pds.p_nextlive = pds.p_prevlive = &pds;
+ pds.p_tid = PTHREAD_THREADS_MAX;
+ /* The init code also sets up p_lock, p_errnop, p_herrnop, and
+ p_userstack but this should not be necessary here. */
+
+ th.th_ta_p = (td_thragent_t *) ta;
+ th.th_unique = &pds;
+ if (callback (&th, cbdata_p) != 0)
+ return TD_DBERR;
+
+ /* All done successfully. */
+ return TD_OK;
+ }
+ else if (cnt == 1)
+ /* The manager is not yet started. No big deal. */
+ return TD_OK;
+ else
+ /* For every other thread this should not happen. */
+ return TD_ERR;
+ }
+
if (ps_pdread (ta->ph, descr, &pds, sizeof_descr) != PS_OK)
return TD_ERR; /* XXX Other error value? */
diff --git a/linuxthreads_db/td_thr_get_info.c b/linuxthreads_db/td_thr_get_info.c
index b479170783..4666bda976 100644
--- a/linuxthreads_db/td_thr_get_info.c
+++ b/linuxthreads_db/td_thr_get_info.c
@@ -1,5 +1,5 @@
/* Get thread information.
- Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
@@ -31,10 +31,17 @@ td_thr_get_info (const td_thrhandle_t *th, td_thrinfo_t *infop)
LOG ("td_thr_get_info");
- /* Get the thread descriptor. */
- if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
- th->th_ta_p->sizeof_descr) != PS_OK)
- return TD_ERR; /* XXX Other error value? */
+ /* Handle the case when the thread library is not yet initialized. */
+ if (th->th_unique == NULL)
+ {
+ memset (&pds, '\0', sizeof (pds));
+ pds.p_tid = PTHREAD_THREADS_MAX;
+ }
+ else
+ /* Get the thread descriptor. */
+ if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
+ th->th_ta_p->sizeof_descr) != PS_OK)
+ return TD_ERR; /* XXX Other error value? */
/* Fill in information. Clear first to provide reproducable
results for the fields we do not fill in. */
@@ -54,7 +61,7 @@ td_thr_get_info (const td_thrhandle_t *th, td_thrinfo_t *infop)
infop->ti_tls = (char *) pds.p_specific;
infop->ti_pri = pds.p_priority;
infop->ti_type = TD_THR_USER;
-
+
if (! pds.p_terminated)
/* XXX For now there is no way to get more information. */
infop->ti_state = TD_THR_ACTIVE;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 08:45:00 +0000