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| author | Philippe Waroquiers <philippe.waroquiers@skynet.be> | 2019-01-01 14:12:30 +0100 |
|---|---|---|
| committer | Philippe Waroquiers <philippe.waroquiers@skynet.be> | 2019-01-01 20:28:55 +0100 |
| commit | ec70d8db32462176e7da60d28b0c1978fc6b70d3 (patch) | |
| tree | a184ba43e15f764b3a12e76646b6932871697ab9 | |
| parent | 5b38f9c16e5b3f5f4b5d7772bfef59b1c97e2d05 (diff) | |
| download | gdb-ec70d8db32462176e7da60d28b0c1978fc6b70d3.zip gdb-ec70d8db32462176e7da60d28b0c1978fc6b70d3.tar.gz gdb-ec70d8db32462176e7da60d28b0c1978fc6b70d3.tar.bz2 | |
Fix leak in record-full.c
valgrind detects leaks in several gdb.reverse tests,
such as the below in gdb.reverse/watch-precsave.exp.
Fix the leak by rewriting the loop that frees
record_full_core_buf_list.
gdb/ChangeLog
2019-01-01 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* record-full.c (record_full_base_target::close): Rewrite
record_full_core_buf_list free logic.
==18847== VALGRIND_GDB_ERROR_BEGIN
==18847== 4,120 (24 direct, 4,096 indirect) bytes in 1 blocks are definitely lost in loss record 3,094 of 3,199
==18847== at 0x4C2BE6D: malloc (vg_replace_malloc.c:309)
==18847== by 0x405097: xmalloc (common-utils.c:44)
==18847== by 0x5AF8EA: xnew<record_full_core_buf_entry> (poison.h:110)
==18847== by 0x5AF8EA: record_full_core_target::xfer_partial(target_object, char const*, unsigned char*, unsigned char const*, unsigned long, unsigned long, unsigned long*) (record-full.c:2182)
==18847== by 0x64677D: raw_memory_xfer_partial(target_ops*, unsigned char*, unsigned char const*, unsigned long, long, unsigned long*) (target.c:956)
==18847== by 0x64691E: memory_xfer_partial_1(target_ops*, target_object, unsigned char*, unsigned char const*, unsigned long, unsigned long, unsigned long*) (target.c:1086)
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/record-full.c | 12 |
2 files changed, 9 insertions, 8 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 2402d73..a2d3601 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,10 @@ 2019-01-01 Philippe Waroquiers <philippe.waroquiers@skynet.be> + * record-full.c (record_full_base_target::close): Rewrite + record_full_core_buf_list free logic. + +2019-01-01 Philippe Waroquiers <philippe.waroquiers@skynet.be> + * break-catch-syscall.c (print_one_catch_syscall): xfree the last text. diff --git a/gdb/record-full.c b/gdb/record-full.c index 2b918ea..8738512 100644 --- a/gdb/record-full.c +++ b/gdb/record-full.c @@ -1014,15 +1014,11 @@ record_full_base_target::close () } /* Release record_full_core_buf_list. */ - if (record_full_core_buf_list) + while (record_full_core_buf_list) { - for (entry = record_full_core_buf_list->prev; entry; - entry = entry->prev) - { - xfree (record_full_core_buf_list); - record_full_core_buf_list = entry; - } - record_full_core_buf_list = NULL; + entry = record_full_core_buf_list; + record_full_core_buf_list = record_full_core_buf_list->prev; + xfree (entry); } if (record_full_async_inferior_event_token) |