https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93920
Bug ID: 93920
Summary: Wrong comments preprocessing using -E and -CC with
escaped end-of-line
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: m...@allan-blanchard.fr
Target Milestone: ---
If a comment contains a line with an escaped end-of-line, the last character of
the line is printed a second time on a new line after preprocessing.
void f(void){
/*
line \
contentX
new line
*/
}
Command:
$ gcc -E -CC example.c
Result:
// ... headers, etc.
# 1 "./example.cpp"
void f(void){
/*
line contentX
X
new line
*/
}
Found on:
- gcc (Arch Linux 9.2.1+20200130-2) 9.2.1 20200130
Reproduced on:
- gcc version 8.3.0 (Ubuntu 8.3.0-6ubuntu1)
- all GCC versions available on GodBolt.
