[Bugme-new] [Bug 20102] New: malloc(3) should document MALLOC_PERTURB_ env option
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Mon Oct 11 12:00:14 PDT 2010
https://bugzilla.kernel.org/show_bug.cgi?id=20102
Summary: malloc(3) should document MALLOC_PERTURB_ env option
Product: Documentation
Version: unspecified
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: man-pages
AssignedTo: documentation_man-pages at kernel-bugs.osdl.org
ReportedBy: vapier at gentoo.org
Regression: No
setting MALLOC_PERTURB_ in the env will take that number and initialize all
malloc's with that value (and the inverse when freeing). this should be
documented in malloc(3) (and noted in free(3)).
e.g. if you set MALLOC_PERTURB_=123, glibc will do memset((123 ^ 0xff) & 0xff)
when doing malloc(), and then glibc will do memset(123 & 0xff) when doing
free()
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