http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51010
Bug #: 51010
Summary: [4.7 Regression] bad diagnostics: #'ssa_name' not
supported by pp_c_expression#]'
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: minor
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: belys...@depni.sinp.msu.ru
CC: rgue...@gcc.gnu.org
Compiling this with -O1 -Wall will cause weird output:
int f (int j)
{
int a [10];
return a [j];
}
$ ./cc1 -quiet -O1 -Wall bug.c
#'ssa_name' not supported by pp_c_expression#]'bug.c: In function 'f':
bug.c:4:3: warning: is used uninitialized in this function [-Wuninitialized]
$
Caused by r154918 (but was latent until the fix for pr50040, r177667):
2009-12-02 Richard Guenther <rguent...@suse.de>
PR middle-end/42088
* tree.c (free_lang_data): Disable if not using LTO.
Reverting r154918 helps:
bug.c: In function 'f':
bug.c:4:3: warning: 'a[j_1(D)]' is used uninitialized in this function
[-Wuninitialized]
