https://sourceware.org/bugzilla/show_bug.cgi?id=27585
Bug ID: 27585
Summary: addr2line riscv: Skip empty name symbols?
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: i at maskray dot me
Target Milestone: ---
Extracted from https://reviews.llvm.org/D95916#2627640 This may be related to
PR27584.
echo 'void _start() {}' > a.c
# Make sure riscv64-linux-gnu-bfd is in PATH.
clang --target=riscv64-linux-gnu -fuse-ld=bfd -nostdlib
-fasynchronous-unwind-tables a.c
~/Dev/binutils-gdb/out/riscv64/binutils/addr2line -fe a.out $(nm a.out | awk '/
_start/{printf "%#x",strtonum("0x"$1)+4}')
??
a.c:?
'??' is less useful. addr2line probably should return '_start' instead.
arm addr2line has logic ignoring $a/$d/$t.
In the absence of DWARF line number information, addr2line uses .symtab to do
symbolization. clang -fasynchronous-unwind-tables causes empty name symbols for
label differences. This should be reproduceable with GCC .L0 symbols as well.
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