4.5.0 r153685
Command line:
$ valgrind --track-origins=yes -v
/mnt/svn/gcc-trunk/binary-153685-lto/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/cc1
-fpreprocessed testcase.i -m32 -O1 -version -fgcse-sm -o tmp.o
...
GNU C (GCC) version 4.5.0 20091028 (experimental) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.5.0 20091028 (experimental), GMP version
4.3.1, MPFR version 2.4.1-p5, MPC version 0.7
...
==5211== 43 errors in context 1 of 2:
==5211== Conditional jump or move depends on uninitialised value(s)
==5211== at 0x7B2215: store_killed_after (store-motion.c:270)
==5211== by 0x7B3221: execute_rtl_store_motion (store-motion.c:1084)
==5211== by 0x71349C: execute_one_pass (passes.c:1519)
==5211== by 0x7136C4: execute_pass_list (passes.c:1568)
==5211== by 0x7136D6: execute_pass_list (passes.c:1569)
==5211== by 0x80B8B0: tree_rest_of_compilation (tree-optimize.c:392)
==5211== by 0x9836AB: cgraph_expand_function (cgraphunit.c:1160)
==5211== by 0x985524: cgraph_optimize (cgraphunit.c:1219)
==5211== by 0x985A5E: cgraph_finalize_compilation_unit (cgraphunit.c:1089)
==5211== by 0x4AE2DA: c_write_global_declarations (c-decl.c:9489)
==5211== by 0x7B8CAB: toplev_main (toplev.c:1061)
==5211== by 0x6587A25: (below main) (in /lib64/libc-2.10.1.so)
==5211== Uninitialised value was created by a heap allocation
==5211== at 0x4C270AC: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==5211== by 0xC90C27: xmalloc (xmalloc.c:147)
==5211== by 0x7B30CB: execute_rtl_store_motion (store-motion.c:1066)
==5211== by 0x71349C: execute_one_pass (passes.c:1519)
==5211== by 0x7136C4: execute_pass_list (passes.c:1568)
==5211== by 0x7136D6: execute_pass_list (passes.c:1569)
==5211== by 0x80B8B0: tree_rest_of_compilation (tree-optimize.c:392)
==5211== by 0x9836AB: cgraph_expand_function (cgraphunit.c:1160)
==5211== by 0x985524: cgraph_optimize (cgraphunit.c:1219)
==5211== by 0x985A5E: cgraph_finalize_compilation_unit (cgraphunit.c:1089)
==5211== by 0x4AE2DA: c_write_global_declarations (c-decl.c:9489)
==5211== by 0x7B8CAB: toplev_main (toplev.c:1061)
==5211==
==5211==
==5211== 2273 errors in context 2 of 2:
==5211== Conditional jump or move depends on uninitialised value(s)
==5211== at 0x7B21FD: store_killed_after (store-motion.c:270)
==5211== by 0x7B3221: execute_rtl_store_motion (store-motion.c:1084)
==5211== by 0x71349C: execute_one_pass (passes.c:1519)
==5211== by 0x7136C4: execute_pass_list (passes.c:1568)
==5211== by 0x7136D6: execute_pass_list (passes.c:1569)
==5211== by 0x80B8B0: tree_rest_of_compilation (tree-optimize.c:392)
==5211== by 0x9836AB: cgraph_expand_function (cgraphunit.c:1160)
==5211== by 0x985524: cgraph_optimize (cgraphunit.c:1219)
==5211== by 0x985A5E: cgraph_finalize_compilation_unit (cgraphunit.c:1089)
==5211== by 0x4AE2DA: c_write_global_declarations (c-decl.c:9489)
==5211== by 0x7B8CAB: toplev_main (toplev.c:1061)
==5211== by 0x6587A25: (below main) (in /lib64/libc-2.10.1.so)
==5211== Uninitialised value was created by a heap allocation
==5211== at 0x4C270AC: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==5211== by 0xC90C27: xmalloc (xmalloc.c:147)
==5211== by 0x7B30CB: execute_rtl_store_motion (store-motion.c:1066)
==5211== by 0x71349C: execute_one_pass (passes.c:1519)
==5211== by 0x7136C4: execute_pass_list (passes.c:1568)
==5211== by 0x7136D6: execute_pass_list (passes.c:1569)
==5211== by 0x80B8B0: tree_rest_of_compilation (tree-optimize.c:392)
==5211== by 0x9836AB: cgraph_expand_function (cgraphunit.c:1160)
==5211== by 0x985524: cgraph_optimize (cgraphunit.c:1219)
==5211== by 0x985A5E: cgraph_finalize_compilation_unit (cgraphunit.c:1089)
==5211== by 0x4AE2DA: c_write_global_declarations (c-decl.c:9489)
==5211== by 0x7B8CAB: toplev_main (toplev.c:1061)
--
Summary: valgrind warns about using uninitialized variable with -
fgcse-sm
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zsojka at seznam dot cz
GCC host triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41862
