unit test failed for checking multiline comments

[clock999]

While running the unit tests for simple app, the case checking for multiline comments is failed. The test code is as below. The expected result of the test is to get an output "void f ( ) { }".

static void comment_multiline()
{
    const char code[] = "#define ABC {// \\\n"
                        "}\n"
                        "void f() ABC\n";
    ASSERT_EQUALS("\n\nvoid f ( ) { }", preprocess(code));
}

I think the translated result of "void f() ABC" should be "void f ( ) {". If we code the magic string in a real file, it should be as below.

#define ABC {// \
}
void f() ABC

If so, the ending brace should be commented.
https://sourceforge.net/p/cppcheck/discussion/general/thread/37c6eba151/

[glankk]

Verified with MSVC v143 (CL 19.44.35209), clang 11.0.0, and gcc 13.3.0.

Input:

#define ABC {// \
}
void f() ABC

MSVC output:

#line 1 "multiline_comment.c"


void f() {

gcc output:

# 0 "multiline_comment.c"
# 0 "<built-in>"
# 0 "<command-line>"
# 1 "multiline_comment.c"


void f() {

clang output:

# 1 "multiline_comment.c"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 351 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "multiline_comment.c" 2


void f() {