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authorhttps://me.yahoo.com/a/g3Ccalpj0NhN566pHbUl6i9QF0QEkrhlfPM-#b1c14 <diana@web>2015-02-16 20:08:03 +0100
committerGNU Hurd web pages engine <web-hurd@gnu.org>2015-02-16 20:08:03 +0100
commit95878586ec7611791f4001a4ee17abf943fae3c1 (patch)
tree847cf658ab3c3208a296202194b16a6550b243cf /open_issues/gcc
parent8063426bf7848411b0ef3626d57be8cb4826715e (diff)
rename open_issues.mdwn to service_solahart_jakarta_selatan__082122541663.mdwn
Diffstat (limited to 'open_issues/gcc')
-rw-r--r--open_issues/gcc/libmudflap.mdwn74
-rw-r--r--open_issues/gcc/pie.mdwn51
2 files changed, 0 insertions, 125 deletions
diff --git a/open_issues/gcc/libmudflap.mdwn b/open_issues/gcc/libmudflap.mdwn
deleted file mode 100644
index f14ca1bc..00000000
--- a/open_issues/gcc/libmudflap.mdwn
+++ /dev/null
@@ -1,74 +0,0 @@
-[[!meta copyright="Copyright © 2008, 2009 Free Software Foundation, Inc."]]
-
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
-is included in the section entitled
-[[GNU Free Documentation License|/fdl]]."]]"""]]
-
-[[!tag open_issue_porting open_issue_gcc]]
-
-Single-threaded use appears to work:
-
- $ echo 'int main(void) { int *a; a[10]=0; return a[5]; }' | ↩
- gcc -o a -fmudflap -x c - -lmudflap
- $ ./a
- *******
- mudflap violation 1 (check/write): time=1227208721.922064 ptr=0x1023de0 size=4
- pc=0x1037a33 location=`<stdin>:1:26 (main)'
- /usr/lib/libmudflap.so.0(__mf_check+0x33) [0x1037a33]
- ./a(main+0x7c) [0x80486c4]
- /usr/lib/libmudflap.so.0(__wrap_main+0x49) [0x1037239]
- Nearby object 1: checked region begins 68B before and ends 65B before
- mudflap object 0x80ca268: name=`argv[]'
- bounds=[0x1023e24,0x1023e2b] size=8 area=static check=0r/0w liveness=0
- alloc time=1227208721.922064 pc=0x10371d3
- Nearby object 2: checked region begins 76B before and ends 73B before
- mudflap object 0x80cb448: name=`environ[]'
- bounds=[0x1023e2c,0x1023ed7] size=172 area=static check=0r/0w liveness=0
- alloc time=1227208721.922064 pc=0x10371d3
- number of nearby objects: 2
- *******
- mudflap violation 2 (check/read): time=1227208721.942109 ptr=0x1023dcc size=4
- pc=0x1037a33 location=`<stdin>:1:35 (main)'
- /usr/lib/libmudflap.so.0(__mf_check+0x33) [0x1037a33]
- ./a(main+0xf3) [0x804873b]
- /usr/lib/libmudflap.so.0(__wrap_main+0x49) [0x1037239]
- Nearby object 1: checked region begins 88B before and ends 85B before
- mudflap object 0x80ca268: name=`argv[]'
- Nearby object 2: checked region begins 96B before and ends 93B before
- mudflap object 0x80cb448: name=`environ[]'
- number of nearby objects: 2
-
-Multi-threaded use doesn't:
-
- $ echo 'int main(void) { int *a; a[10]=0; return a[5]; }' | ↩
- gcc -include pthread.h -o a -fmudflapth -x c - -lmudflapth -lpthread
- $ ./a
- Killed
- $ gdb a
- [...]
- Starting program: /media/data/home/tschwinge/a
-
- Program received signal EXC_BAD_ACCESS, Could not access memory.
- 0x01180653 in getenv () from /lib/libc.so.0.3
- (gdb) bt
- #0 0x01180653 in getenv () from /lib/libc.so.0.3
- #1 0x01177a02 in __dcigettext () from /lib/libc.so.0.3
- #2 0x01176a57 in dcgettext () from /lib/libc.so.0.3
- #3 0x011c03b5 in strerror_r () from /lib/libc.so.0.3
- #4 0x01175b57 in __assert_perror_fail () from /lib/libc.so.0.3
- #5 0x0111f1ad in cthread_fork (func=0x114f630 <_hurd_msgport_receive>, arg=0x0)
- at /build/buildd/hurd-20080607/build-tree/hurd/libpthread/pthread/cthreads-compat.c:41
- #6 0x0115713e in _hurdsig_init () from /lib/libc.so.0.3
- #7 0x01140852 in _hurd_proc_init@@GLIBC_2.2.6 () from /lib/libc.so.0.3
- #8 0x01140e86 in _hurd_init () from /lib/libc.so.0.3
- #9 0x011690ce in init1 () from /lib/libc.so.0.3
- #10 0x00001e96 in _dl_start_user () from /lib/ld.so
- #11 0x00000001 in ?? ()
- #12 0x01024000 in ?? ()
- #13 0x00000000 in ?? ()
-
-Also `libmudflap` is pthread-only.
diff --git a/open_issues/gcc/pie.mdwn b/open_issues/gcc/pie.mdwn
deleted file mode 100644
index 5ae4bdcb..00000000
--- a/open_issues/gcc/pie.mdwn
+++ /dev/null
@@ -1,51 +0,0 @@
-[[!meta copyright="Copyright © 2012, 2013 Free Software Foundation, Inc."]]
-
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
-is included in the section entitled [[GNU Free Documentation
-License|/fdl]]."]]"""]]
-
-[[!meta title="Position-Independent Executables"]]
-
-[[!tag open_issue_glibc]]
-
-
-# IRC, freenode, #hurd, 2012-11-08
-
- <pinotree> tschwinge: i'm not totally sure, but it seems the pie options
- for gcc/ld are causing issues
- <pinotree> namely, producing executables that sigsegv straight away
- <tschwinge> pinotree: OK, I do remember some issues about these, too.
- <tschwinge> Also for -pg.
- <tschwinge> These have in common that they use different crt*.o files for
- linking.
- <tschwinge> Might well be there's some bugs there.
- <pinotree> one way is to try the w3m debian build: the current build
- configuration enables also pie, which in turns makes an helper executable
- (mktable) sigsegv when invoked
- <pinotree> if «,-pie» is appended to the DEB_BUILD_MAINT_OPTIONS variable
- in debian/rules, pie is not added and the resulting mktable runs
- correctly
-
-
-## IRC, OFTC, #debian-hurd, 2012-11-09
-
- <pinotree> youpi: ah, as i noted to tschwinge earlier, it seems -fPIE -pie
- miscompile stuff
- <youpi> uh
- <pinotree> this causes the w3m build failure and (indirectly, due to elinks
- built with -pie) aptitude
-
-
-## IRC, freenode, #hurd, 2013-01-19
-
- <gnu_srs> pinotree: I can confirm that -fPIE -pie fails and only -fPIE
- works for mktable in w3m. Still have to check with elinks. What's up doc?
-
-
-## [[!message-id "20130211040854.GN5926@type.youpi.perso.aquilenet.fr"]]
-
-[[glibc]] `t/pie-sbrk` branch.