https://bugs.llvm.org/show_bug.cgi?id=52480
Bug ID: 52480
Summary: KERN_INVALID_ADDRESS crash with lld but not ld64
Product: lld
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: MachO
Assignee: unassignedb...@nondot.org
Reporter: keithbsmi...@gmail.com
CC: g...@fb.com, jezr...@gmail.com,
llvm-bugs@lists.llvm.org, smee...@fb.com
Here is an iOS sample project
https://drive.google.com/file/d/1H1P5BsnfC_Q5Ebd1ddBVMqQ2OWuCAvlH/view
Where the app crashes when exercising some specific codepaths.
Repro steps:
1. The attached project currently links with ld64 and should build + run on the
simulator out of the box
2. Launch the app on the simulator and click "Basic map", the map should load
fine
3. Change OTHER_LD_FLAGS to point to lld, I was using
`--ld-path=/Users/ksmiley/dev/llvm-project/build-dylibs/bin/ld64.lld` for this
4. Repeat 2, but this time it will crash.
Here's a snippet from the crash log:
```
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000030
Exception Codes: 0x0000000000000001, 0x0000000000000030
VM Region Info: 0x30 is not in any region. Bytes before following region:
4377145296
REGION TYPE START - END [ VSIZE] PRT/MAX
SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
__TEXT 104e5f000-1053e5000 [ 5656K] r-x/r-x
SM=COW ...ogleMapsDemos
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: SIGNAL 11 Segmentation fault: 11
Terminating Process: exc handler [58739]
```
This could likely be reduced more if needed
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