Hey,
while working on a low-prio PR24024, I recognized that the -E output of
gcc-4.5.0 is somehow "broken" for certain constructs, for example:
==== test.c ====
int main ()
{
int ret, a;
ret = a + \
b;
}
==== END test.c ====
(gcc-4.5.0) # gcc -E test.c
# 1 "test.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.c"
int main ()
{
int ret, a;
ret = a +
b;
}
I also tested this on older versions of gcc and each of these versions (4.2.0,
4.3.0 and 4.4.3) return the expected output:
# 1 "test.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.c"
int main ()
{
int ret, a;
ret = a + b;
}
I currently suspect that this incorrect output in gcc-4.5.0 is caused by
_cpp_clean_line. For my understanding, _cpp_clean_line should detect the splice
operator and merge the two lines to form a new logical line which is then
output due to the -E option.
--
Summary: -E output broken for gcc-4.5.0
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: gcc-bug at andihellmund dot com
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44191
