Found using gcc 3.4.2 on Fedora Core 3:
$ gcc -g3 -M -MT hello. -MF hello.d hello.c
# 1 "/home/viz/src//"
$
The line '# 1 "/home/viz/src//"' should not be generated.
Verified that the problem still exists in 3.4.3.
$ cat hello.c
#include <stdio.h>
int main () {
printf("Hello\n");
}
$ gcc -v -Wall -g3 -M -MT hello. -MF hello.d hello.c
Reading specs from /usr/local/lib/gcc/x86_64-unknown-linux-gnu/3.4.3/specs
Configured with: ./configure
Thread model: posix
gcc version 3.4.3
/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/3.4.3/cc1 -E -quiet -v -M -MF
hello.d -MT hello.
-dD hello.c -mtune=k8 -Wall -fworking-directory
ignoring nonexistent directory "NONE/include"
ignoring nonexistent directory
"/usr/local/lib/gcc/x86_64-unknown-linux-gnu/3.4.3/../../../../
x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/local/lib/gcc/x86_64-unknown-linux-gnu/3.4.3/include
/usr/include
End of search list.
# 1 "/home/viz/src//"
$
Workaround: Don't use the -g3 option.
--
Summary: Using -M -MT ... -MF ... with -g3 generates preprocess
line to stdout
Product: gcc
Version: 3.4.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ben at pathscale dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20770
