https://bugs.kde.org/show_bug.cgi?id=366345
Bug ID: 366345
Summary: Dirty compile from m_libcbase.c and
vgdb-invoker-ptrace.c
Product: valgrind
Version: 3.12 SVN
Platform: Other
OS: other
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: noloa...@gmail.com
I'm working on an ODROID C2. Its an ARMv8 device with a Amlogic SoC based on
A53 cores. It ships with a 64-bit OS named Linaro, which is Aarch64. The
Amlogic SoC has ASIMD (v8 NEON) and CRC32, but it lacks Crypto extensions. The
flags used to compile the Valgrind include `-march=armv8-a+crc+crypto
-mtune=cortex-a53`.
These are unusual because Valgrind normally clean compiles.
*********
...
gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I../include -I../VEX/pub -I../VEX/pub
-DVGA_arm64=1 -DVGO_linux=1 -DVGP_arm64_linux=1 -DVGPV_arm64_linux_vanilla=1
-I../coregrind -DVG_LIBDIR="\"/usr/local/lib/valgrind"\"
-DVG_PLATFORM="\"arm64-linux\"" -DNDEBUG -g2 -O3 -march=armv8-a+crc+crypto
-mtune=cortex-a53 -O2 -g -std=gnu99 -Wall -Wmissing-prototypes -Wshadow
-Wpointer-arith -Wstrict-prototypes -Wmissing-declarations -Wcast-align
-Wcast-qual -Wwrite-strings -Wempty-body -Wformat -Wformat-security
-Wignored-qualifiers -Wmissing-parameter-type -Wold-style-declaration
-fno-stack-protector -fno-strict-aliasing -fno-builtin
-DENABLE_LINUX_TICKET_LOCK -DNDEBUG -g2 -O3 -march=armv8-a+crc+crypto
-mtune=cortex-a53 -MT libcoregrind_arm64_linux_a-m_libcprint.o -MD -MP -MF
.deps/libcoregrind_arm64_linux_a-m_libcprint.Tpo -c -o
libcoregrind_arm64_linux_a-m_libcprint.o `test -f 'm_libcprint.c' || echo
'./'`m_libcprint.c
m_libcbase.c: In function ‘vgPlain_parse_enum_set’:
m_libcbase.c:595:19: warning: ‘tokens_saveptr’ may be used uninitialized in
this function [-Wmaybe-uninitialized]
for (p = s; *p != '\0'; ++p) {
^
m_libcbase.c:522:11: note: ‘tokens_saveptr’ was declared here
HChar *tokens_saveptr;
^
m_libcbase.c:595:19: warning: ‘input_saveptr’ may be used uninitialized in this
function [-Wmaybe-uninitialized]
for (p = s; *p != '\0'; ++p) {
^
m_libcbase.c:530:11: note: ‘input_saveptr’ was declared here
HChar *input_saveptr;
^
mv -f .deps/libcoregrind_arm64_linux_a-m_libcprint.Tpo
.deps/libcoregrind_arm64_linux_a-m_libcprint.Po
**********
...
gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I../include -I../VEX/pub -I../VEX/pub
-DVGA_arm64=1 -DVGO_linux=1 -DVGP_arm64_linux=1 -DVGPV_arm64_linux_vanilla=1
-I../coregrind -DVG_LIBDIR="\"/usr/local/lib/valgrind"\"
-DVG_PLATFORM="\"arm64-linux\"" -DNDEBUG -g2 -O3 -march=armv8-a+crc+crypto
-mtune=cortex-a53 -O2 -g -std=gnu99 -Wall -Wmissing-prototypes -Wshadow
-Wpointer-arith -Wstrict-prototypes -Wmissing-declarations -Wcast-align
-Wcast-qual -Wwrite-strings -Wempty-body -Wformat -Wformat-security
-Wignored-qualifiers -Wmissing-parameter-type -Wold-style-declaration
-fno-stack-protector -fno-strict-aliasing -fno-builtin
-DENABLE_LINUX_TICKET_LOCK -DNDEBUG -g2 -O3 -march=armv8-a+crc+crypto
-mtune=cortex-a53 -MT m_aspacemgr/libcoregrind_arm64_linux_a-aspacemgr-linux.o
-MD -MP -MF m_aspacemgr/.deps/libcoregrind_arm64_linux_a-aspacemgr-linux.Tpo -c
-o m_aspacemgr/libcoregrind_arm64_linux_a-aspacemgr-linux.o `test -f
'm_aspacemgr/aspacemgr-linux.c' || echo './'`m_aspacemgr/aspacemgr-linux.c
vgdb-invoker-ptrace.c: In function ‘invoker_invoke_gdbserver’:
vgdb-invoker-ptrace.c:426:12: warning: ‘off_lwpid’ may be used uninitialized in
this function [-Wmaybe-uninitialized]
rw = ptrace_read_memory(pid, vgt+off_lwpid,
^
vgdb-invoker-ptrace.c:392:8: note: ‘off_lwpid’ was declared here
int off_lwpid;
^
vgdb-invoker-ptrace.c:391:8: warning: ‘off_status’ may be used uninitialized in
this function [-Wmaybe-uninitialized]
int off_status;
^
vgdb-invoker-ptrace.c:390:8: warning: ‘sz_tst’ may be used uninitialized in
this function [-Wmaybe-uninitialized]
int sz_tst;
^
vgdb-invoker-ptrace.c:389:9: warning: ‘vgt’ may be used uninitialized in this
function [-Wmaybe-uninitialized]
Addr vgt;
^
mv -f .deps/vgdb-vgdb-invoker-ptrace.Tpo .deps/vgdb-vgdb-invoker-ptrace.Po
Reproducible: Always
Steps to Reproduce:
Follow the instructions from http://valgrind.org/downloads/repository.html.
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