[Bug bootstrap/50758] [4.7 Regression] Bootstrap fails at stage 2 on x86_64-apple-darwin10: error: variable 'token_no' set but not used
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758 Jack Howarth howarth at nitro dot med.uc.edu changed: What|Removed |Added CC||howarth at nitro dot ||med.uc.edu --- Comment #1 from Jack Howarth howarth at nitro dot med.uc.edu 2011-10-17 14:34:30 UTC --- I don't see this issue at r180087 on x86_64-apple-darwin11 with... ../gcc-4.7-20111017/configure --prefix=/sw --prefix=/sw/lib/gcc4.7 --mandir=/sw/share/man --infodir=/sw/lib/gcc4.7/info --with-build-config=bootstrap-lto --enable-stage1-languages=c,lto --enable-languages=c,c++,fortran,lto,objc,obj-c++,java --with-gmp=/sw --with-libiconv-prefix=/sw --with-ppl=/sw --with-cloog=/sw --with-mpc=/sw --with-system-zlib --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib --program-suffix=-fsf-4.7 --enable-checking=yes --enable-cloog-backend=isl and an lto-bootstrap.
[Bug bootstrap/50758] [4.7 Regression] Bootstrap fails at stage 2 on x86_64-apple-darwin10: error: variable 'token_no' set but not used
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2011-10-17 Target Milestone|--- |4.7.0 Ever Confirmed|0 |1 --- Comment #2 from Richard Guenther rguenth at gcc dot gnu.org 2011-10-17 15:12:20 UTC --- Confirmed.
[Bug bootstrap/50758] [4.7 Regression] Bootstrap fails at stage 2 on x86_64-apple-darwin10: error: variable 'token_no' set but not used
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758 --- Comment #3 from dodji at seketeli dot org dodji at seketeli dot org 2011-10-17 15:26:54 UTC --- Are you still seing this with commit r180090?
[Bug bootstrap/50758] [4.7 Regression] Bootstrap fails at stage 2 on x86_64-apple-darwin10: error: variable 'token_no' set but not used
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758
--- Comment #4 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-10-17
15:42:09 UTC ---
Are you still seing this with commit r180090?
I have bootstrapped revision 180087 with the following patch
--- /opt/gcc/_clean/libcpp/line-map.c2011-10-17 12:04:41.0 +0200
+++ /opt/gcc/work/libcpp/line-map.c2011-10-17 15:36:30.0 +0200
@@ -625,7 +625,7 @@ source_location
linemap_macro_map_loc_to_exp_point (const struct line_map *map,
source_location location)
{
- unsigned token_no;
+ unsigned token_no __attribute__ ((__unused__));
linemap_assert (linemap_macro_expansion_map_p (map)
location = MAP_START_LOCATION (map));
I guess that revision 180090 is a similar fix that should work (I'll have the
answer in a couple hours;-).
Last question: is the warning bogus or not? If no, why? If yes, I'll open a new
PR.
[Bug bootstrap/50758] [4.7 Regression] Bootstrap fails at stage 2 on x86_64-apple-darwin10: error: variable 'token_no' set but not used
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758
--- Comment #5 from dodji at seketeli dot org dodji at seketeli dot org
2011-10-17 15:56:05 UTC ---
dominiq at lps dot ens.fr gcc-bugzi...@gcc.gnu.org a écrit:
I guess that revision 180090 is a similar fix that should work (I'll
have the answer in a couple hours;-).
OK, thanks.
Last question: is the warning bogus or not? If no, why? If yes, I'll
open a new PR.
The warning is not bogus when you are compiling with --disable-checking
or when your GCC_VERSION is 2007. This is because the way
linemap_assert is defined:
/* Assertion macro to be used in line-map code. */
#define linemap_assert(EXPR)\
do {\
if (! (EXPR))\
abort ();\
} while (0)
/* Assert that MAP encodes locations of tokens that are not part of
the replacement-list of a macro expansion. */
#define linemap_check_ordinary(LINE_MAP) __extension__\
({linemap_assert (!linemap_macro_expansion_map_p (LINE_MAP)); \
(LINE_MAP);})
#else
#define linemap_assert(EXPR)
#define linemap_check_ordinary(LINE_MAP) (LINE_MAP)
#endif
In those cases token_no is not used. Hence the fix committed to
revision 180090.
Sorry for the inconvenience.
[Bug bootstrap/50758] [4.7 Regression] Bootstrap fails at stage 2 on x86_64-apple-darwin10: error: variable 'token_no' set but not used
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758 --- Comment #6 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-10-17 19:40:06 UTC --- The warning is not bogus when you are compiling with --disable-checking or when your GCC_VERSION is 2007. ... I am using ../work/configure --prefix=/opt/gcc/gcc4.7w --enable-languages=c,c++,fortran,objc,obj-c++,java,ada,lto --with-gmp=/opt/sw64 --with-libiconv-prefix=/opt/sw64 --with-system-zlib --with-cloog=/opt/sw64 --enable-cloog-backend=isl --enable-lto so no --disable-checking and the bootstrap gcc is configure:4007: gcc --version 5 gcc (GCC) 4.5.3 20110419 for GNAT GPL 2011 (20110419) What am I missing?
[Bug bootstrap/50758] [4.7 Regression] Bootstrap fails at stage 2 on x86_64-apple-darwin10: error: variable 'token_no' set but not used
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758 Dominique d'Humieres dominiq at lps dot ens.fr changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED --- Comment #7 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-10-17 19:56:33 UTC --- BTW bootstrap finished on x86_64-apple-darwin10 and line-map.c compiled at stage2 on powerpc-apple-darwin9, both at revision 180100. Thanks for the patch. Closing as fixed.
