https://bugs.llvm.org/show_bug.cgi?id=38278
Bug ID: 38278
Summary: llvm-readelf incorrectly reports stackmap version.
Product: new-bugs
Version: unspecified
Hardware: PC
OS: OpenBSD
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: vex...@gmail.com
CC: llvm-bugs@lists.llvm.org
```
$ llvm-readelf -stackmap a.out
LLVM StackMap Version: 2
...
```
But if we look in the binary:
```
$ r2 a.out
[0x00400450]> s section..llvm_stackmaps
[0x00400680]> px 16
- offset - 0 1 2 3 4 5 6 7 8 9 A B C D E F 0123456789ABCDEF
0x00400680 0300 0000 0100 0000 0000 0000 0200 0000 ................
```
Byte 0 is the version field in the stackmap header.
2 versus 3.
The docs say 3 is correct:
https://llvm.org/docs/StackMaps.html#stack-map-format
```
$ clang -v
clang version 7.0.0 (trunk 336996) (llvm/trunk 336905)
Target: x86_64-unknown-linux-gnu
```
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