digitalmars.D.bugs - [Issue 9466] New: Line number dependent bug of coverage
- d-bugmail puremagic.com (23/23) Feb 06 2013 http://d.puremagic.com/issues/show_bug.cgi?id=9466
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http://d.puremagic.com/issues/show_bug.cgi?id=9466
Summary: Line number dependent bug of coverage
Product: D
Version: D2
Platform: x86_64
OS/Version: Windows
Status: NEW
Keywords: ice
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nobody puremagic.com
ReportedBy: kekeniro2 yahoo.co.jp
Created an attachment (id=1183)
reduced test case
DMD crashes when compile the attaced source files with -cov switch.
They are reduced, but have many many blank lines to keep line number.
Environment:
Windows7 64-bit ( Non -m64 )
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Feb 06 2013
d-bugmail puremagic.com http://d.puremagic.com/issues/show_bug.cgi?id=9466 DMD crashes but its process is alive. DMD 2.058 or older, seems to go silently into loop. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Feb 06 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466
Andrej Mitrovic <andrej.mitrovich gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andrej.mitrovich gmail.com
18:40:50 PST ---
It crashes in Module::genobjfile, in this call:
free(covb);
covb is allocated via:
covb = (unsigned *)calloc((numlines + 32) / 32, sizeof(*covb));
I would sure like to understand the meaning of this magical expression. Why is
it dividing by 32? Another case of premature optimization?
If you replace that with:
covb = (unsigned *)calloc(numlines, sizeof(*covb));
Then it works fine.
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Feb 06 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466
Andrej Mitrovic <andrej.mitrovich gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |pull
AssignedTo|nobody puremagic.com |andrej.mitrovich gmail.com
Severity|normal |major
11:06:51 PST ---
https://github.com/D-Programming-Language/dmd/pull/1647
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Feb 08 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466 Created an attachment (id=1184) More reduced test case If move the code line `int dummy = 0;` in cb.i from line 161 to 160, segfault disappeared. The line number depends on minimum allocation size of calloc(). As far as I see, currently it allocates at least 20 bytes (20 * 8 == 160 bit). -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Feb 09 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466
Andrej Mitrovic <andrej.mitrovich gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|pull |
AssignedTo|andrej.mitrovich gmail.com |nobody puremagic.com
06:10:46 PST ---
The pull was invalid, I'll let others handle this one.
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Feb 09 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466 Probably this is a duplicate of Issue 9353. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 21 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466
Walter Bright <bugzilla digitalmars.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bugzilla digitalmars.com
22:53:23 PDT ---
covb is allocated via:
covb = (unsigned *)calloc((numlines + 32) / 32, sizeof(*covb));
I would sure like to understand the meaning of this magical expression. Why is
it dividing by 32? Another case of premature optimization?
covb is a bit vector, it must have numlines bits in it. Since unsigned's are 32
bits wide, it rounds it up to the number of 32 bit unsigned's to allocate.
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May 21 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466
Walter Bright <bugzilla digitalmars.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |WORKSFORME
23:21:13 PDT ---
Can't duplicate any problem with 2.064 head, although it does fail with 2.063.
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Oct 01 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466
Andrej Mitrovic <andrej.mitrovich gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|WORKSFORME |
05:54:36 PDT ---
Can't duplicate any problem with 2.064 head, although it does fail with 2.063.
I can reproduce it with git-head. Have you made sure to compile with:
dmd.exe -cov -c cb.d -J.
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Oct 02 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466 I made a DMD.exe of 2.063.2 by the _tuned_ DMC. (Memory allocation improvement ver.) It does _not_ reproduce the bug ... why? -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 02 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466 08:03:03 PDT ---I made a DMD.exe of 2.063.2 by the _tuned_ DMC. (Memory allocation improvement ver.) It does _not_ reproduce the bug ... why?Which tuned DMC? -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 02 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466I mean DMC 8.57 and new snn.lib, which came in August. DMC 8.57 http://forum.dlang.org/thread/ktenl9$1e68$1 digitalmars.com snn.lib http://forum.dlang.org/thread/ktju8h$efb$1 digitalmars.com -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------I made a DMD.exe of 2.063.2 by the _tuned_ DMC. (Memory allocation improvement ver.) It does _not_ reproduce the bug ... why?Which tuned DMC?
Oct 02 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9466 08:27:19 PDT ---I still get a crash with these when using with both 2.063.2 and 2.064. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------I mean DMC 8.57 and new snn.lib, which came in August. DMC 8.57 http://forum.dlang.org/thread/ktenl9$1e68$1 digitalmars.com snn.lib http://forum.dlang.org/thread/ktju8h$efb$1 digitalmars.comI made a DMD.exe of 2.063.2 by the _tuned_ DMC. (Memory allocation improvement ver.) It does _not_ reproduce the bug ... why?Which tuned DMC?
Oct 02 2013