Re: (ITS#8056) [PATCH] libdb version is not detected correctly when using gcc5

On 11/02/15 14:25, hyc@symas.com wrote:

Your patch is simple enough but frankly this sounds like a bug in gcc 5's cpp. It shouldn't be inserting gratuitous whitespace in the middle of lines, or inserting line breaks arbitrarily.

Not a gcc bug, the ITS report proved incomplete. gcc-5 inserts "# <file information>" lines (indicating where the macro expansion comes from, I think), so it needs the line breaks.

This slightly different test program:

#include <db.h> __db_version DB_VERSION_MAJOR+0000;

...produces this:

# 2 "test.c" __db_version # 2 "test.c" 3 4 4 # 2 "test.c" +0000;