From 083eef1f897e2fd13e4afa7b1a52090c83476f5c Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Tue, 26 Feb 2019 14:46:40 -0700 Subject: [PATCH] Add ATTRIBUTE_UNUSED_RESULT to scoped_mmap This applies ATTRIBUTE_UNUSED_RESULT to scoped_mmap::release and fixes a couple of spots to comply. gdb/ChangeLog 2019-03-05 Tom Tromey * nat/linux-btrace.c (linux_enable_bts, linux_enable_pt): Update. * common/scoped_mmap.h (class scoped_mmap) : Add ATTRIBUTE_UNUSED_RESULT. --- gdb/ChangeLog | 6 ++++++ gdb/common/scoped_mmap.h | 2 +- gdb/nat/linux-btrace.c | 9 +++------ 3 files changed, 10 insertions(+), 7 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 74b336749c5..a420e2a6e7c 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2019-03-05 Tom Tromey + + * nat/linux-btrace.c (linux_enable_bts, linux_enable_pt): Update. + * common/scoped_mmap.h (class scoped_mmap) : Add + ATTRIBUTE_UNUSED_RESULT. + 2019-03-05 Tom Tromey * common/scoped_fd.h (class scoped_fd) : Add diff --git a/gdb/common/scoped_mmap.h b/gdb/common/scoped_mmap.h index 763f40e201c..0b504c96fec 100644 --- a/gdb/common/scoped_mmap.h +++ b/gdb/common/scoped_mmap.h @@ -57,7 +57,7 @@ public: DISABLE_COPY_AND_ASSIGN (scoped_mmap); - void *release () noexcept + ATTRIBUTE_UNUSED_RESULT void *release () noexcept { void *mem = m_mem; m_mem = MAP_FAILED; diff --git a/gdb/nat/linux-btrace.c b/gdb/nat/linux-btrace.c index b51e70fbaff..ef291ec2310 100644 --- a/gdb/nat/linux-btrace.c +++ b/gdb/nat/linux-btrace.c @@ -544,13 +544,11 @@ linux_enable_bts (ptid_t ptid, const struct btrace_config_bts *conf) bts->bts.size = size; bts->bts.data_head = &header->data_head; - bts->bts.mem = (const uint8_t *) data.get () + data_offset; + bts->bts.mem = (const uint8_t *) data.release () + data_offset; bts->bts.last_head = 0ull; bts->header = header; bts->file = fd.release (); - data.release (); - tinfo->conf.bts.size = (unsigned int) size; return tinfo.release (); } @@ -667,11 +665,10 @@ linux_enable_pt (ptid_t ptid, const struct btrace_config_pt *conf) pt->pt.size = aux.size (); pt->pt.mem = (const uint8_t *) aux.release (); pt->pt.data_head = &header->aux_head; - pt->header = header; + pt->header = (struct perf_event_mmap_page *) data.release (); + gdb_assert (pt->header == header); pt->file = fd.release (); - data.release (); - tinfo->conf.pt.size = (unsigned int) pt->pt.size; return tinfo.release (); } -- 2.30.2