digitalmars.D.bugs - [Issue 4185] New: Existence of an empty, uncalled function that takes an argument generates segfaulting executable.
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http://d.puremagic.com/issues/show_bug.cgi?id=4185
Summary: Existence of an empty, uncalled function that takes an
argument generates segfaulting executable.
Product: D
Version: 2.041
Platform: Other
OS/Version: Linux
Status: NEW
Severity: major
Priority: P2
Component: DMD
AssignedTo: nobody puremagic.com
ReportedBy: blood.of.life gmail.com
17:01:02 PDT ---
void* bar;
void foo(void*) {}
void baz() { foo(bar); }
void main() {}
This code causes DMD to produce an executable that segfaults inside of
GC.collect.
(gdb) bt
_D4core6thread17thread_suspendAllUZv7suspendMFC4core6thread6ThreadZv ()
However, in the course of boiling down a test case, the segfault has moved
around with great regularity (inside of a library SO, inside of libc.exit,
whilst appending to an array, the list goes on), so I'm speculating that it's
some kind of memory corruption.
This occurs on Linux using D2, neither D1 nor Windows using D1,D2 manifests
this issue.
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d-bugmail puremagic.com
http://d.puremagic.com/issues/show_bug.cgi?id=4185
Bernard Helyer <blood.of.life gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Existence of an empty, |Existence of an empty,
|uncalled function that |uncalled function that
|takes an argument generates |takes an argument generates
|segfaulting executable. |segfaulting executable
| |using DMD >= 2.044.
17:02:29 PDT ---
I forgot to say that this issue occurs when using DMD 2.044 and up.
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http://d.puremagic.com/issues/show_bug.cgi?id=4185 03:58:06 PDT --- If bar is declared as __gshared, the executable behaves correctly. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 14 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4185
Steven Schveighoffer <schveiguy yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |schveiguy yahoo.com
04:58:16 PDT ---
I can't reproduce this on Linux 2.045 and the current beta. Can you try a
clean install of the compiler?
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http://d.puremagic.com/issues/show_bug.cgi?id=4185 05:07:13 PDT --- Yep. What arch are you on? How much memory do you have installed (myself == x86, 1.5 GiB). Like I said, I think this is memory corruption of some description, so it's bound to be nebulous. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
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http://d.puremagic.com/issues/show_bug.cgi?id=4185 05:10:31 PDT --- I'm on x86 1 Gb. What flags do you pass to the compiler? -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 14 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4185 05:13:33 PDT --- None: dmd testmodule -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 14 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4185 05:14:16 PDT --- Steve, could you run it in valgrind? -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
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http://d.puremagic.com/issues/show_bug.cgi?id=4185 05:14:37 PDT --- Steven, sorry. :o -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 14 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4185
Bernard Helyer <blood.of.life gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
Summary|Existence of an empty, |Existence of an empty,
|uncalled function that |uncalled function that
|takes a TLS variable as its |takes a TLS variable as its
|parameter generates |parameter generates
|segfaulting executable |segfaulting executable
|using DMD >= 2.044. |using DMD >= 2.044 and the
| |GOLD linker.
23:14:52 PDT ---
Okay, this only occurs when the GNU GOLD linker is installed instead of the
vanilla. This could be a bug in DMD, but it's probably GOLD, so closing this as
INVALID.
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