JDK-8223186 : HotSpot compile warnings from GCC 9
- Type: Bug
- Component: hotspot
- Sub-Component: runtime
- Affected Version: 8,11,13
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: linux
- Submitted: 2019-05-01
- Updated: 2021-02-01
- Resolved: 2019-05-10
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Resolved: Release in which this issue/RFE has been resolved.
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To download the current JDK release, click here.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 11 | JDK 13 | Other |
|---|---|---|
| 11.0.11Fixed | 13 b21Fixed  |
openjdk8u292Fixed |
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Description
I saw following warnings when I compiled HotSpot with GCC 9 on Fedora 30:
/home/ysuenaga/OpenJDK/jdk/src/hotspot/os/linux/osContainer_linux.cpp: In static member function 'static jlong OSContainer::memory_limit_in_bytes()':
/home/ysuenaga/OpenJDK/jdk/src/hotspot/os/linux/osContainer_linux.cpp:470:22: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
470 | char* format = "%s " JULONG_FORMAT;
/home/ysuenaga/OpenJDK/jdk/src/hotspot/os/linux/osContainer_linux.cpp: In static member function 'static jlong OSContainer::memory_and_swap_limit_in_bytes()':
/home/ysuenaga/OpenJDK/jdk/src/hotspot/os/linux/osContainer_linux.cpp:493:22: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
493 | char* format = "%s " JULONG_FORMAT;
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/gc/shared/ptrQueue.cpp: In constructor 'BufferNode::Allocator::Allocator(const char*, size_t)':
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/gc/shared/ptrQueue.cpp:97:10: warning: 'char* strncpy(char*, const char*, size_t)' specified bound 120 equals destination size [-Wstringop-truncation]
97 | strncpy(_name, name, sizeof(_name));
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/compiler/disassembler.cpp: In constructor 'decode_env::decode_env(CodeBlob*, outputStream*, CodeStrings, ptrdiff_t)':
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/compiler/disassembler.cpp:365:32: warning: 'void* memset(void*, int, size_t)' clearing an object of non-trivial type 'class decode_env'; use assignment instead [-Wclass-memaccess]
365 | memset(this, 0, sizeof(*this)); // Beware, this zeroes bits of fields.
| ^
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/compiler/disassembler.cpp:153:7: note: 'class decode_env' declared here
153 | class decode_env {
| ^~~~~~~~~~
In file included from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/runtime/thread.hpp:34,
from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/runtime/safepoint.hpp:30,
from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/gc/shared/collectedHeap.hpp:33,
from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/precompiled/precompiled.hpp:37:
In constructor 'JvmtiCodeBlobDesc::JvmtiCodeBlobDesc(const char*, address, address)',
inlined from 'static void CodeBlobCollector::do_blob(CodeBlob*)' at /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/prims/jvmtiCodeBlobEvents.cpp:141:94:
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/prims/jvmtiExport.hpp:423:12: warning: 'char* strncpy(char*, const char*, size_t)' specified bound 64 equals destination size [-Wstringop-truncation]
423 | strncpy(_name, name, sizeof(_name));
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In constructor 'JvmtiCodeBlobDesc::JvmtiCodeBlobDesc(const char*, address, address)',
inlined from 'void CodeBlobCollector::collect()' at /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/prims/jvmtiCodeBlobEvents.cpp:177:94:
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/prims/jvmtiExport.hpp:423:12: warning: 'char* strncpy(char*, const char*, size_t)' specified bound 64 equals destination size [-Wstringop-truncation]
423 | strncpy(_name, name, sizeof(_name));
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/runtime/thread.hpp:34,
from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/runtime/safepoint.hpp:30,
from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/gc/shared/collectedHeap.hpp:33,
from /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/precompiled/precompiled.hpp:37:
In constructor 'JvmtiCodeBlobDesc::JvmtiCodeBlobDesc(const char*, address, address)',
inlined from 'void JvmtiDynamicCodeEventCollector::register_stub(const char*, address, address)' at /home/ysuenaga/OpenJDK/jdk/src/hotspot/share/prims/jvmtiExport.cpp:2825:60:
/home/ysuenaga/OpenJDK/jdk/src/hotspot/share/prims/jvmtiExport.hpp:423:12: warning: 'char* strncpy(char*, const char*, size_t)' specified bound 64 equals destination size [-Wstringop-truncation]
423 | strncpy(_name, name, sizeof(_name));
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