| Issue |
89696
|
| Summary |
[clang-format] Failure when formatting a nested structure containing a lint-suppression comment
|
| Labels |
clang-format
|
| Assignees |
|
| Reporter |
mitchgrout
|
**Version**: 17.0.2
**Platform**: Windows 10 (mingw64), x86_64
**.clang-format**:
```yml
---
BasedOnStyle: LLVM
Language: Cpp
Standard: c++17
ColumnLimit: 120
AlignArrayOfStructures: Left
```
**main.c**:
```c
object_t obj =
{
.outer =
{
.w = 0,
.x = 1, //lint some comment here
.y = 2,
.z = 3
}
};
```
Running the command `clang-format -style=file main.c` triggers a failure with the following stack dump:
```
Stack dump:
0. Program arguments: "C:\\Program Files\\LLVM\\bin\\clang-format.exe" -style=file main.c
Exception Code: 0xC0000005
#0 0x00007ff744ab591b C:\Program Files\LLVM\bin\clang-format.exe 0xe591b C:\Program Files\LLVM\bin\clang-format.exe 0xe5373
#1 0x00007ff744ab591b C:\Program Files\LLVM\bin\clang-format.exe 0xe3c20 C:\Program Files\LLVM\bin\clang-format.exe 0xe0d26
#2 0x00007ff744ab591b C:\Program Files\LLVM\bin\clang-format.exe 0x5bd3d C:\Program Files\LLVM\bin\clang-format.exe 0xc54d1
#3 0x00007ff744ab591b C:\Program Files\LLVM\bin\clang-format.exe 0x6eed7 C:\Program Files\LLVM\bin\clang-format.exe 0x51462
#4 0x00007ff744ab591b C:\Program Files\LLVM\bin\clang-format.exe 0x53e89 C:\Program Files\LLVM\bin\clang-format.exe 0x572d
#5 0x00007ff744ab591b C:\Program Files\LLVM\bin\clang-format.exe 0x39b6 C:\Program Files\LLVM\bin\clang-format.exe 0x1b0d40
#6 0x00007ff744ab591b (C:\Program Files\LLVM\bin\clang-format.exe+0xe591b)
#7 0x00007ff744ab5373 (C:\Program Files\LLVM\bin\clang-format.exe+0xe5373)
0x00007FF744AB591B, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0xE591B byte(s)
0x00007FF744AB5373, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0xE5373 byte(s)
0x00007FF744AB3C20, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0xE3C20 byte(s)
0x00007FF744AB0D26, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0xE0D26 byte(s)
0x00007FF744A2BD3D, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0x5BD3D byte(s)
0x00007FF744A954D1, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0xC54D1 byte(s)
0x00007FF744A3EED7, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0x6EED7 byte(s)
0x00007FF744A21462, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0x51462 byte(s)
0x00007FF744A23E89, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0x53E89 byte(s)
0x00007FF7449D572D, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0x572D byte(s)
0x00007FF7449D39B6, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0x39B6 byte(s)
0x00007FF744B80D40, C:\Program Files\LLVM\bin\clang-format.exe(0x00007FF7449D0000) + 0x1B0D40 byte(s)
0x00007FFC55B27344, C:\Windows\System32\KERNEL32.DLL(0x00007FFC55B10000) + 0x17344 byte(s), BaseThreadInitThunk() + 0x14 byte(s)
0x00007FFC55E026B1, C:\Windows\SYSTEM32\ntdll.dll(0x00007FFC55DB0000) + 0x526B1 byte(s), RtlUserThreadStart() + 0x21 byte(s)
```
This is a stripped-down example from a larger code-base. `object_t` represents a union, with `.outer` being one of the possible variants. Some extra notes:
- If a trailing comma is attached to `.z`, no failure occurs, but `.y` will be de-dented heavily
- If `.w` is removed, no error occurs
- If a space between `//` and `lint` is added, no error occurs
- If the comment is removed, no error occurs
- If the `.outer` declaration is removed, no error occurs
- If `AlignArrayOfStructures` is removed, no error occurs
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