https://bugs.llvm.org/show_bug.cgi?id=43567
Bug ID: 43567
Summary: [IA] .ascii directive rejects hex escape codes
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: ndesaulni...@google.com
CC: caij2...@gmail.com, kristof.be...@arm.com,
lloz...@chromium.org, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk,
srhi...@google.com
$ cat arm.s
.ascii "ARM\x64"
$ clang arm.s
arm.s:1:8: error: invalid escape sequence (unrecognized character) in '.ascii'
directive
.ascii "ARM\x64"
^
$ aarch64-linux-gnu-as arm.s
$ echo $?
0
It looks like the arm64 Linux kernel embeds a magic string in the kernel image.
It is not a null terminated C style string (hence .ascii not .asciz). \x64 is
a hexadecimal escape code (corresponds to 'd' in ASCII, but is meant to be a
cute joke I think).
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