https://sourceware.org/bugzilla/show_bug.cgi?id=16867
Bug ID: 16867
Summary: linking object with separate debug file results in
"relocation .. has invalid symbol index"
Product: binutils
Version: 2.25 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: amodra at gmail dot com
cat > start.s <<EOF
.text
.dc.a main
nop
EOF
as -gdwarf-2 -o start.o start.s
objcopy --only-keep-debug start.o debug_start.o
strip --strip-debug start.o
objcopy --add-gnu-debuglink=debug_start.o start.o
ld start.o
ld: warning: cannot find entry symbol _start; defaulting to 0000000000400078
ld: debug_start.o(.debug_info): relocation 0 has invalid symbol index 5
ld: debug_start.o(.debug_info): relocation 1 has invalid symbol index 6
ld: debug_start.o(.debug_info): relocation 2 has invalid symbol index 1
ld: debug_start.o(.debug_info): relocation 3 has invalid symbol index 1
start.o:(.text+0x0): undefined reference to `main'
ld tries to give source file/line number for the undefined symbol error. This
means attempting to read debug info, and it's when relocating that debug info
that we get the "invalid symbol index" errors.
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