gcc version: Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.3.2-1.1' --with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.3 --program-suffix=-4.3 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-mpfr --enable-targets=all --enable-cld --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu Thread model: posix gcc version 4.3.2 (Debian 4.3.2-1.1)
system type: Linux debian 2.6.26-1-686 #1 SMP Fri Mar 13 18:08:45 UTC 2009 i686 GNU/Linux command line: gcc -DNO_LCMS -Wall -Werror -O3 -c -o dcraw.o dcraw.c source files: curl -O 'http://www.cybercom.net/~dcoffin/dcraw/dcraw.c' description of the expected behavior: Compiles without errors. description of actual behavior: cc1: warnings being treated as errors dcraw.c: In function adobe_coeff: dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c: In function parse_phase_one: dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds The inconsistency hcc1: warnings being treated as errors dcraw.c: In function adobe_coeff: dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c:6493: error: array subscript is above array bounds dcraw.c: In function parse_phase_one: dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds dcraw.c:5751: error: array subscript is above array bounds For one, the compiler considers it an issues that array cam_xyz[4][3] is accessed as cam_xyz[0][j], 0 <= j < 12. This issue is found with -O3 but not with -O2. The inconsistency, which I see is a bug, is that romm_camm[3][3] which is accessed as romm_cam[0][i], i <= j < 9, does not raise an error even after the above two cases are fixed. -- Summary: inconsistency in array bounds checking with -O3 Product: gcc Version: 4.3.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ptrktn at gmail dot com GCC build triplet: i486-linux-gnu GCC host triplet: i686-linux-gnu GCC target triplet: i486-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39757
