https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118519
Bug ID: 118519
Summary: Escaped line breaks in the middle of a token
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: alx at kernel dot org
Target Milestone: ---
Once upon a time, this probably made sense due to hardware or software
limitations. These days, it doesn't make sense anymore.
We should add a diagnostic when an escaped line break breaks a token.
alx@devuan:~/tmp/gcc$ cat split.c
#define A\
B \
4\
2
int
ma\
in(void)
{
return AB;
}
alx@devuan:~/tmp/gcc$ cc -Wall -Wextra split.c
alx@devuan:~/tmp/gcc$ ./a.out
alx@devuan:~/tmp/gcc$ echo $?
42
---
Or:
alx@devuan:~/tmp/gcc$ cat split.c
#d\
e\
f\
i\
n\
e \
A\
B \
4\
2
i\
n\
t
m\
a\
i\
n
(
v\
o\
i\
d)
{
r\
e\
t\
u\
r\
n AB;
}
alx@devuan:~/tmp/gcc$ cc -Wall -Wextra split.c
alx@devuan:~/tmp/gcc$ ./a.out; echo $?
42
