1.check out latest code, 5922ba762a
2.compile with asan,
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -g")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -g")
3.run ./mp4dump --verbosity 3 --format text poc
You can see the asan information below:
=================================================================
==633802==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x0000003c3e48 bp 0x7ffcbc9d4550 sp 0x7ffcbc9d4470 T0)
==633802==The signal is caused by a READ memory access.
==633802==Hint: address points to the zero page.
#0 0x3c3e48 in AP4_DescriptorListInspector::Action(AP4_Descriptor*) const /home/lly/pro/Bento4/Source/C++/Core/Ap4Descriptor.h:124:21
#1 0x40bdc2 in AP4_List<AP4_Descriptor>::Apply(AP4_List<AP4_Descriptor>::Item::Operator const&) const /home/lly/pro/Bento4/Source/C++/Core/Ap4List.h:353:12
#2 0x40bdc2 in AP4_InitialObjectDescriptor::Inspect(AP4_AtomInspector&) /home/lly/pro/Bento4/Source/C++/Core/Ap4ObjectDescriptor.cpp:327:22
#3 0x3e0485 in AP4_IodsAtom::InspectFields(AP4_AtomInspector&) /home/lly/pro/Bento4/Source/C++/Core/Ap4IodsAtom.cpp:112:29
#4 0x37117e in AP4_Atom::Inspect(AP4_AtomInspector&) /home/lly/pro/Bento4/Source/C++/Core/Ap4Atom.cpp:263:5
#5 0x39f0a2 in AP4_AtomListInspector::Action(AP4_Atom*) const /home/lly/pro/Bento4/Source/C++/Core/Ap4Atom.h:601:15
#6 0x39d3b1 in AP4_List<AP4_Atom>::Apply(AP4_List<AP4_Atom>::Item::Operator const&) const /home/lly/pro/Bento4/Source/C++/Core/Ap4List.h:353:12
#7 0x39d3b1 in AP4_ContainerAtom::InspectChildren(AP4_AtomInspector&) /home/lly/pro/Bento4/Source/C++/Core/Ap4ContainerAtom.cpp:220:16
#8 0x37117e in AP4_Atom::Inspect(AP4_AtomInspector&) /home/lly/pro/Bento4/Source/C++/Core/Ap4Atom.cpp:263:5
#9 0x359b43 in main /home/lly/pro/Bento4/Source/C++/Apps/Mp4Dump/Mp4Dump.cpp:350:15
#10 0x7f899655d0b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
#11 0x2a2b1d in _start (/home/lly/pro/Bento4/cmakebuild/mp4dump+0x2a2b1d)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/lly/pro/Bento4/Source/C++/Core/Ap4Descriptor.h:124:21 in AP4_DescriptorListInspector::Action(AP4_Descriptor*) const
==633802==ABORTING
How to reproduce:
You can see the asan information below:
poc.zip
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