DWARF5 is not supported by drsyms, resulting in no line numbers with gcc 11+ #2485
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derekbruening
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Sep 21, 2023
+ DWARF5 is now the gcc default but is not supported (#2485) so we add -gdwarf-4 to our test flags and the docs. + Adds Linux syscall entries for rseq and getrandom, seen on tiny apps now. + Fixes a bug in the size of kernel_sigset_t which was resulting in false positive uninitialized errors in rt_sigaction. + Updates drltrace code for droption now being in a namespace. + Adds --recursive to the git submodule commands to get minizip for the DR build. + Relaxes the drltrace tests to allow __IO_puts and __open.
derekbruening
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Sep 21, 2023
Updates DR to bbd4ffadd. Fixes several issues with the latest DR and recent Linux platforms: + DWARF5 is now the gcc default but is not supported (#2485) so we add -gdwarf-4 to our test flags and the docs. + Adds Linux syscall entries for rseq and getrandom, seen on tiny apps now. + Fixes a bug in the size of kernel_sigset_t which was resulting in false positive uninitialized errors in rt_sigaction. + Updates drltrace code for droption now being in a namespace. + Adds --recursive to the git submodule commands to get minizip for the DR build. + Relaxes the drltrace tests to allow __IO_puts and __open.
bmcutler
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Sep 22, 2023
with g++11 it is necessary to compile with dwarf4 to get line numbers
from DrMemory
"command" : "clang++ -g -gdwarf-4 -Wall -o a.out *.cpp",
// NOTE: Compiling with the -gdwarf-4 option is required with g++ 11+
// so that DrMemory can print source code line numbers with.
// See also:
// DynamoRIO/drmemory#2485
Also, in PR Submitty/Submitty#9793 the category
for a system call previously in the unknown category is updated so that
the configuration runs without the system call failure.
---------
Co-authored-by: Barb Cutler <Barb Cutler>
derekbruening
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Jan 13, 2024
Updates DR to 3e3b976e316e9469ca36338fb7f3fa086739d03a which pulls in the use of elfutils in drsyms for DWARF-5 support on Linux. Updates the documentation and flags for Linux to remove -gdwarf-4. Fixes #2485
derekbruening
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Jan 14, 2024
Updates DR to 3e3b976e316e9469ca36338fb7f3fa086739d03a which pulls in the use of elfutils in drsyms for DWARF-5 support on Linux. Updates the documentation and flags for Linux to remove -gdwarf-4. Fixes #2485
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Building Dr. Memory on a system with gcc 12.2, the tests fail b/c they can't get line numbers:
It's because the test binary has DWARF5:
Dr. Memory uses DynamoRIO's drsyms library, and it uses elftoolchain, picked due to its BSD instead of GPL license. However, it is not kept up to date these days and lacks DWARF5 support: https://sourceforge.net/p/elftoolchain/tickets/611.
This is filed in the DynamoRIO tracker as DynamoRIO/dynamorio#5926.
Adding -gdwarf-4: the test works.
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