bug#12926: emacs 4.2: cc-mode confused by indented preprocessor statements

bug#12926: emacs 4.2: cc-mode confused by indented preprocessor statements

[Kevin Burge]

- If you indent the following code with gcc 4.2, by highlighting lines 06-10
and indenting, it confuses line 07 as the first line of a function rather than
the first line of a statement, and so everything is shifted left.

- If you move the preprocessor lines 02 and 04 back to column 1, it indents
correctly.

- If you change "#if defined(A)" to "#if 0" while still indented, it indents
correctly.

There is just something that cc-mode does not like about indented preprocessor
statements.  4.1 exhibited the same behavior, and prevents us from upgrading
from 23.4.

IMPORTANT: you MUST close and re-open the file between these tests because the
caching in cc-mode interferes with the results.

01 int f(void) {
02    #if defined(A)
03    printf("test\n");
04    #endif
05
06    if (test) {
07        int i = 0;
08        printf();
09    }
10 }

The source:

int f(void) {
    #if defined(A)
    printf("test\n");
    #endif

    if (test) {
        int i = 0;
        printf();
    }
}

Thank you,
Kevin Burge

bug#12926: emacs 4.2: cc-mode confused by indented preprocessor statements

[Alex]

close 12926 24.5
quit

Kevin Burge <kevin.burge@systemware.com> writes:

> - If you indent the following code with gcc 4.2, by highlighting lines 06-10
> and indenting, it confuses line 07 as the first line of a function rather than
> the first line of a statement, and so everything is shifted left.
>
> - If you move the preprocessor lines 02 and 04 back to column 1, it indents
> correctly.
>
> - If you change "#if defined(A)" to "#if 0" while still indented, it indents
> correctly.
>
> There is just something that cc-mode does not like about indented preprocessor
> statements.  4.1 exhibited the same behavior, and prevents us from upgrading
> from 23.4.
>
> IMPORTANT: you MUST close and re-open the file between these tests because the
> caching in cc-mode interferes with the results.
>
> 01 int f(void) {
> 02    #if defined(A)
> 03    printf("test\n");
> 04    #endif
> 05
> 06    if (test) {
> 07        int i = 0;
> 08        printf();
> 09    }
> 10 }
>
> The source:
>
> int f(void) {
>     #if defined(A)
>     printf("test\n");
>     #endif
>
>     if (test) {
>         int i = 0;
>         printf();
>     }
> }
>
> Thank you,
> Kevin Burge

This appears to work correctly in Emacs 24.5.