Closed
Description
Description
I am using LLVM-readelf to find out the needed libraries of a shared object. The data shall be formatted as json and passed to a JSON processing library, where it is parsed and processed.
How To Reproduce
$ llvm-readelf-15 --needed-libs --pretty-print --elf-output-style=JSON /usr/lib/libgdiplus.so | jq
...Expected Behavior
Output like
[
{
"/usr/lib/libgdiplus.so": {
"FileSummary": {
"File": "/usr/lib/libgdiplus.so",
"Format": "elf64-x86-64",
"Arch": "x86_64",
"AddressSize": "64bit",
"LoadName": "libgdiplus.so.0"
},
"NeededLibraries": [
"libX11.so.6",
"libc.so.6",
"libcairo.so.2",
"libexif.so.12",
"libfontconfig.so.1",
"libfreetype.so.6",
"libgif.so.7",
"libglib-2.0.so.0",
"libjpeg.so.8",
"libm.so.6",
"libpng16.so.16",
"libpthread.so.0",
"libtiff.so.5"
]
}
}
]Actual Behavior
parse error: Invalid numeric literal at line 12, column 0
Output without JQ
[
{
"/usr/lib/libgdiplus.so": {
"FileSummary": {
"File": "/usr/lib/libgdiplus.so",
"Format": "elf64-x86-64",
"Arch": "x86_64",
"AddressSize": "64bit",
"LoadName": "libgdiplus.so.0"
},
"NeededLibraries": [libX11.so.6
libc.so.6
libcairo.so.2
libexif.so.12
libfontconfig.so.1
libfreetype.so.6
libgif.so.7
libglib-2.0.so.0
libjpeg.so.8
libm.so.6
libpng16.so.16
libpthread.so.0
libtiff.so.5
]
}
}
]
Versions
Tried with LLVM
- 11
- 12
- 13
- 14
- 15
- 16
- 17
Possible Issue Location
I think the faulting location is in ELFDumper.cpp:2566:
Instead of using
for (StringRef L : Libs)
W.startLine() << L << "\n";it should be something like
W.printList(Libs);But I actually don't know the interna about ArrayRef and StringRef and have no Idea whether this would work.