https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78028
Bug ID: 78028
Summary: ASAN doesn't find memory leak
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: barto at cambridgesemantics dot com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target Milestone: ---
Checking address sanitizer leaks lead me to
https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer and the
sample code therein.
I copied/pasted it and ran it on my Ubuntu 14.04 box.
The leak for FooBar was detected and reported.
So I added the suppression file and got no leak reported.
I then removed the allocation code in the FooBar function and still had no
report of a memory leak.
516_ g++ -fsanitize=address lsan-suppressed.cc
517_ ./a.out
=================================================================
==4471==ERROR: LeakSanitizer: detected memory leaks
<snip>
519_ ASAN_OPTIONS=detect_leaks=1
LSAN_OPTIONS=suppressions=suppressions=suppr.txt ./a.out
-----------------------------------------------------
Suppressions used:
count bytes template
1 7 FooBar
But no error for Baz as noted on the webpage. Removing the allocation in FooBar
will then pass without the suppression file applied.
