[Bug c/43009] New: segmentation fault with -O3 when accessing byte-aligned array as dwords

2010-02-09 Thread ajk dot xyz at gmail dot com
rds Product: gcc Version: 4.4.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ajk dot xyz at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi

[Bug c/43009] segmentation fault with -O3 when accessing byte-aligned array as dwords

2010-02-09 Thread ajk dot xyz at gmail dot com
--- Comment #1 from ajk dot xyz at gmail dot com 2010-02-09 15:48 --- Created an attachment (id=19828) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19828&action=view) the preprocessed file (*.i*) that triggers the bug -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43009

[Bug c/43009] segmentation fault with -O3 when accessing byte-aligned array as dwords

2010-02-09 Thread ajk dot xyz at gmail dot com
--- Comment #2 from ajk dot xyz at gmail dot com 2010-02-09 15:52 --- Created an attachment (id=19829) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19829&action=view) output for: gcc -v -save-temps -Wall -Werror -O3 2.c -o 2 -- http://gcc.gnu.org/bugzilla/show_bug

[Bug c/43009] segmentation fault with -O3 when accessing byte-aligned array as dwords

2010-02-09 Thread ajk dot xyz at gmail dot com
--- Comment #4 from ajk dot xyz at gmail dot com 2010-02-09 16:47 --- (In reply to comment #3) > Your pointer isn't properly aligned to be accessed via uint32_t*. > And should it? If 'yes', then why GCC generates working code for that source without optimization