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-rw-r--r--open_issues/binutils.mdwn108
-rw-r--r--open_issues/boehm_gc.mdwn5
2 files changed, 78 insertions, 35 deletions
diff --git a/open_issues/binutils.mdwn b/open_issues/binutils.mdwn
index fa384bf4..306ba38a 100644
--- a/open_issues/binutils.mdwn
+++ b/open_issues/binutils.mdwn
@@ -47,8 +47,8 @@ git diff --patience --stat=$COLUMNS,$COLUMNS --patch --src-prefix=./ --dst-prefi
-->
-Last reviewed up to Git commit 9939e1314f970c6ba568956148a518ac710a280a
-(2014-01-08).
+Last reviewed up to Git commit c2853f3d99797a321c37948297441ca6021f719a
+(2014-02-14).
* Globally
@@ -167,9 +167,12 @@ Last reviewed up to Git commit 9939e1314f970c6ba568956148a518ac710a280a
# Build
Here's a log of a binutils-gdb build run; this is from Git commit
-9939e1314f970c6ba568956148a518ac710a280a (2014-01-08) plus
-[[!message-id "87vbxxhww4.fsf@kepler.schwinge.homeip.net"]], and
-[[!message-id "8738kyi30l.fsf@kepler.schwinge.homeip.net"]], run on
+c2853f3d99797a321c37948297441ca6021f719a (2014-02-14) plus
+[[!message-id "87vbxxhww4.fsf@kepler.schwinge.homeip.net"]],
+[[!message-id "8738kyi30l.fsf@kepler.schwinge.homeip.net"]],
+[[!message-id "8761ofv62k.fsf@kepler.schwinge.homeip.net"]],
+[[!message-id "1391759958-972-2-git-send-email-yao@codesourcery.com"]],
+[[!message-id "1391759958-972-3-git-send-email-yao@codesourcery.com"]], run on
kepler.SCHWINGE and coulomb.SCHWINGE.
$ export LC_ALL=C
@@ -187,11 +190,11 @@ MIG-generated stub files; thus no `-Werror` until that is resolved
([[strict_aliasing]]).
This takes up around 1.3 GiB, and needs roughly 17 min on kepler.SCHWINGE and
-78 min on coulomb.SCHWINGE.
+79 min on coulomb.SCHWINGE.
<!--
- $ (make && touch .go-install) 2>&1 | tee log_build_ && test -f .go-install && (make install && touch .go-test) 2>&1 | tee log_install && test -f .go-test && mkdir -p gdb/testsuite/gdb.gdb && make -k check 2>&1 | tee log_test
+ $ (make && touch .go-install) 2>&1 | tee log_build_ && test -f .go-install && (make install && touch .go-test) 2>&1 | tee log_install && test -f .go-test && make -k check 2>&1 | tee log_test
-->
@@ -283,26 +286,10 @@ min on coulomb.SCHWINGE.
# Testsuite
-Some change in
-95e4302a8f872b3f68c4cf5af774ca1bde9d2c1a..b7bba0015567c096541d62f2637b9818b1634a59
-causes all gdb.gdb tests to regress from PASS to ERROR:
-
- Running [...]/gdb/testsuite/gdb.gdb/complaints.exp ...
- -PASS: gdb.gdb/complaints.exp: breakpoint in captured_command_loop
- -[...]
- +ERROR: remote_download to host of [...]/gdb/testsuite/../../gdb/gdb to [...]/gdb/testsuite/gdb.gdb/xgdb: cp: cannot create regular file '[...]/gdb/testsuite/gdb.gdb/xgdb': No such file or directory
- +ERROR: Couldn't load into [...]/gdb/testsuite/../../gdb/gdb.
- +WARNING: Couldn't test self
-
-The gdb/testsuite/gdb.gdb directory does not exist/is no longer created; create
-it manually:
-
- $ mkdir -p gdb/testsuite/gdb.gdb
-
$ make -k check 2>&1 | tee log_test
[...]
-This needs roughly 17 min on kepler.SCHWINGE and 120 min on coulomb.SCHWINGE.
+This needs roughly 20 min on kepler.SCHWINGE and 140 min on coulomb.SCHWINGE.
When running `make -k check 2>&1 | tee log_test`, at the end of the testsuite
the `tee` process does not terminate if there are still stray leftover
@@ -343,14 +330,6 @@ like `gdb/testsuite/boards/cc-with-tweaks.exp` would help, or setting
weakness|performance/io_system/binutils_ld_64ksec]]), so assuming some
system load variation, the testsuite's timeout may trigger.
- * <a name="weak"><!-- stable_URL -->`FAIL: ELF weak [...]`</a>
-
- [[I|tschwinge]] suppose this is due to us having an override w.r.t. weak
- symbol handling in glibc, needed for our external [[/libpthread]]. TODO:
- document properly.
- This has now been fixed (thus, we now get XPASSes), and the XFAILs can be
- removed.
-
* `FAIL: gas/i386/rept` (intermittently)
Added in commit 06f1247c54126b9f1e6acb8ff8c7be35aec6f44c (2012-06-07) as
@@ -875,8 +854,69 @@ like `gdb/testsuite/boards/cc-with-tweaks.exp` would help, or setting
* `gdb.arch/i386-prologue.exp`
- On coulomb.SCHWINGE, there are several FAILs, where there are, for example,
- unexpected frames showing up in backtraces. TODO.
+ There are several FAILs, where there are unexpected frames showing up in
+ backtraces, for example. Earlier on, these just FAILed on
+ coulomb.SCHWINGE; since
+ 9939e1314f970c6ba568956148a518ac710a280a..c2853f3d99797a321c37948297441ca6021f719a
+ on kepler.SCHWINGE, too. TODO.
+
+ * [[libgc|boehm_gc]] `GC_find_limit_with_bound` SIGSEGVs
+
+ On coulomb.SCHWINGE, in
+ 9939e1314f970c6ba568956148a518ac710a280a..c2853f3d99797a321c37948297441ca6021f719a
+ several PASSes regressed to FAILs:
+
+ Starting program: [...]/gdb/testsuite/gdb.gdb/xgdb -nw -nx -data-directory [...]/gdb/testsuite/../data-directory
+ [New Thread 13417.5]
+
+ Program received signal SIGSEGV, Segmentation fault.
+ 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1
+ (gdb) FAIL: gdb.gdb/complaints.exp: run until breakpoint at captured_command_loop
+ WARNING: Couldn't test self
+
+ Starting program: [...]/gdb/testsuite/gdb.gdb/xgdb -nw -nx -data-directory [...]/gdb/testsuite/../data-directory
+ [New Thread 13448.5]
+
+ Program received signal SIGSEGV, Segmentation fault.
+ 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1
+ (gdb) FAIL: gdb.gdb/python-interrupts.exp: run until breakpoint at captured_command_loop
+ WARNING: Couldn't test self
+
+ Starting program: [...]/gdb/testsuite/gdb.gdb/xgdb -nw -nx -data-directory [...]/gdb/testsuite/../data-directory
+ [New Thread 13464.3]
+
+ Program received signal SIGSEGV, Segmentation fault.
+ 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1
+ (gdb) FAIL: gdb.gdb/python-selftest.exp: run until breakpoint at captured_command_loop
+ WARNING: Couldn't test self
+
+ (gdb) PASS: gdb.gdb/selftest.exp: step into xmalloc call
+ continue
+ Continuing.
+
+ Program received signal SIGSEGV, Segmentation fault.
+ 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1
+ (gdb) FAIL: gdb.gdb/selftest.exp: xgdb is at prompt
+
+ These are all tests where GDB examines itself; being linked against libgc
+ (new dependency due to new Guile scripting support; all Guile scripting
+ tests PASS). So, probably some bad interaction between GDB and a debuggee
+ that is using libgc; maybe libgc is using SIGSEGV for internal signalling
+ purposes; see the `HEURISTIC2` discussion on [[boehm_gc]].
+
+ #0 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1
+ #1 0x0126ba2e in GC_find_limit () from /usr/lib/i386-gnu/libgc.so.1
+ #2 0x0126bb15 in GC_get_stack_base () from /usr/lib/i386-gnu/libgc.so.1
+ #3 0x011be0ec in scm_init_guile () from /usr/lib/libguile-2.0.so.22
+ #4 0x081203ba in _initialize_guile () at ../../W._C._Handy/gdb/guile/guile.c:704
+ #5 0x082dc94d in initialize_all_files () at init.c:291
+ #6 0x082a3c7f in gdb_init (argv0=0x8563e90 "[...]/gdb/testsuite/gdb.gdb/xgdb") at ../../W._C._Handy/gdb/top.c:1822
+ #7 0x081da3b8 in captured_main (data=0x1bff164) at ../../W._C._Handy/gdb/main.c:747
+ #8 0x081d70e9 in catch_errors (func=func@entry=0x81da110 <captured_main>, func_args=func_args@entry=0x1bff164, errstring=errstring@entry=0x837a0e5 "", mask=mask@entry=RETURN_MASK_ALL) at ../../W._C._Handy/gdb/exceptions.c:524
+ #9 0x081db277 in gdb_main (args=0x1bff164) at ../../W._C._Handy/gdb/main.c:1062
+ #10 0x0809714b in main (argc=5, argv=0x1bff1f4) at ../../W._C._Handy/gdb/gdb.c:33
+
+ TODO.
TODO.
diff --git a/open_issues/boehm_gc.mdwn b/open_issues/boehm_gc.mdwn
index 0a476d71..8cd2415a 100644
--- a/open_issues/boehm_gc.mdwn
+++ b/open_issues/boehm_gc.mdwn
@@ -1,4 +1,4 @@
-[[!meta copyright="Copyright © 2010, 2012, 2013 Free Software Foundation,
+[[!meta copyright="Copyright © 2010, 2012, 2013, 2014 Free Software Foundation,
Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
@@ -199,6 +199,9 @@ sources, and for `libatomic_ops` to the
rely on glibc internals. Or we instead add support to parse
[[`/proc/`|hurd/translator/procfs]] (can even use the same as Linux?),
or use some other interface. [[!tag open_issue_glibc]]
+ This is also likely the issue causing the GDB [[!tag open_issue_gdb]]
+ `GC_find_limit_with_bound` SIGSEGV startup confusion described in
+ [[binutils]].
* `#define SIG_SUSPEND SIGUSR1`, `#define SIG_THR_RESTART SIGUSR2`
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 23:31:27 +0000