http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47595
Summary: c-c++-common/uninit-17.c fails test for warnings when
-fgraphite-identity enabled at -O2
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: howa...@nitro.med.uc.edu
When -fgraphite-identity is enabled in gcc trunk at -O2 like the graphite
branch...
Index: gcc/opts.c
===================================================================
--- gcc/opts.c (revision 169512)
+++ gcc/opts.c (working copy)
@@ -459,6 +459,9 @@ static const struct default_options defa
{ OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 },
/* -O2 optimizations. */
+#ifdef HAVE_cloog
+ { OPT_LEVELS_2_PLUS, OPT_fgraphite_identity, NULL, 1 },
+#endif
{ OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 },
The failures...
FAIL: c-c++-common/uninit-17.c (test for warnings, line 12)
FAIL: c-c++-common/uninit-17.c (test for warnings, line 16)
FAIL: c-c++-common/uninit-17.c (test for excess errors)
occur. These are of the form...
Executing on host:
/sw/src/fink.build/gcc46-4.6.0-1000/darwin_objdir/gcc/testsuite/g++/../../g++
-B/sw/src/fink.build/gcc46-4.6.0-1000/darwin_objdir/gcc/testsuite/g++/../../
/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/gcc/testsuite/c-c++-common/uninit-17.c
-nostdinc++
-I/sw/src/fink.build/gcc46-4.6.0-1000/darwin_objdir/x86_64-apple-darwin10.7.0/i386/libstdc++-v3/include/x86_64-apple-darwin10.7.0
-I/sw/src/fink.build/gcc46-4.6.0-1000/darwin_objdir/x86_64-apple-darwin10.7.0/i386/libstdc++-v3/include
-I/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/libstdc++-v3/libsupc++
-I/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/libstdc++-v3/include/backward
-I/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/libstdc++-v3/testsuite/util
-fmessage-length=0 -O2 -Wuninitialized -fno-ivopts -S -m32 -o uninit-17.s
(timeout = 300)
/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/gcc/testsuite/c-c++-common/uninit-17.c:
In function 'void foobar(int, int*)':^M
/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/gcc/testsuite/c-c++-common/uninit-17.c:21:6:
warning: 'b' is used uninitialized in this function [-Wuninitialized]^M
output is:
/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/gcc/testsuite/c-c++-common/uninit-17.c:
In function 'void foobar(int, int*)':^M
/sw/src/fink.build/gcc46-4.6.0-1000/gcc-4.6-20110202/gcc/testsuite/c-c++-common/uninit-17.c:21:6:
warning: 'b' is used uninitialized in this function [-Wuninitialized]^M
FAIL: c-c++-common/uninit-17.c (test for warnings, line 12)
FAIL: c-c++-common/uninit-17.c (test for warnings, line 16)
FAIL: c-c++-common/uninit-17.c (test for excess errors)
and look similar to those in the fixed PR44738.
