[Nasm-bugs] [Bug 3392418] New: Mach-O: impossible to create __compact_unwind section
no-reply at bugzilla-nasm.gorcunov.org
no-reply at bugzilla-nasm.gorcunov.org
Mon Jul 31 09:17:27 PDT 2017
https://bugzilla.nasm.us/show_bug.cgi?id=3392418
Bug ID: 3392418
Summary: Mach-O: impossible to create __compact_unwind section
Product: NASM
Version: 2.13.xx
Hardware: All
OS: Mac OS
Status: OPEN
Severity: normal
Priority: Medium
Component: Assembler
Assignee: nobody at nasm.us
Reporter: timofeyev at bk.ru
CC: gorcunov at gmail.com, hpa at zytor.com, nasm-bugs at nasm.us
Obtained from: Binary from nasm.us
I'm trying to generate unwind information on Mac in the form of
__compact_unwind section, which in AT&T syntax looks like this:
.section __LD,__compact_unwind,regular,debug
It seems to be impossible to write this in nasm for two reasons:
- the length of __compact_unwind is 16 characters without null terminator,
which is the maximum for Mach-O. Nasm only supports 15.
- no way to specify debug flag on the section
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