[clang] [CLANG] Fixes the issue with using bool in builtin_bswapg (PR #169285)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results

* 84739 tests passed
* 1104 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### Clang
<details>
<summary>Clang.CodeGen/builtin_bswapg.c</summary>

```
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 1
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64 -O0 -emit-llvm -o - /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64 -O0 -emit-llvm -o - /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c:3:18: error: unknown type name 'bool'
# |     3 | auto test_bswapg(bool c) {
# |       |                  ^
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c:3:6: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
# |     3 | auto test_bswapg(bool c) {
# |       | ~~~~ ^
# |       | int
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c:3:1: error: illegal storage class on function
# |     3 | auto test_bswapg(bool c) {
# |       | ^
# | 3 errors generated.
# `-----------------------------
# error: command failed with exit status: 1
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CodeGen/builtin_bswapg.c
# `-----------------------------
# error: command failed with exit status: 2

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/169285