Ivan Maidanski

threadkeytest (SEGFAULT) on arm64 and s390x

16

Build (s390x): https://travis-ci.org/github/ivmai/bdwgc/jobs/675472271 Build (arm64): https://travis-ci.org/github/ivmai/bdwgc/jobs/675472261 Source: master (7f2bdaba3) Target: arm64, s390x Compiler: gcc-5.4.0 Reproduction rate: 1/30 How to reproduce: * cmake -Dbuild_tests=ON -DBUILD_SHARED_LIBS=OFF -Denable_cplusplus=ON -Denable_gc_assertions=ON . && cmake --build...

Member access within null pointer of type 'hdr' in GC_size or GC_is_marked on ppc64le (MSan and UBSan)

3

Build: https://app.travis-ci.com/github/ivmai/bdwgc/jobs/550649360 Source: master (1f1e0df060) Host: Linux/ppc64le Config: CFLAGS_EXTRA="-fsanitize=memory,undefined -fno-omit-frame-pointer" CONF_OPTIONS="--disable-shared --enable-gc-assertions" Output: Switched to incremental mode Reading dirty bits from /proc misc.c:471:26: runtime error: member access within null pointer...

Strange MemorySanitizer warnings on E2K

5

Source: master (2afde2458) Host: Linux/E2K Compiler: lcc:1.26.12:Jun--5-2022:e2k-v4-linux; gcc (GCC) 9.3.0 compatible How to reproduce (1): ./autogen.sh && ./configure && make -j check CFLAGS_EXTRA="-fsanitize=memory" && cat gctest.log ``` ==20773==WARNING: MemorySanitizer: use-of-uninitialized-value...

SIGSEGV instead of signal handler invocation on E2K

3

Source: master (41d41c309) Host: Linux/e2k (GNU/Linux 5.4.0-3.19-e8c) Compiler: lcc:1.26.12:Jun--5-2022:e2k-v4-linux gcc (GCC) 9.3.0 compatible How to reproduce: ./autogen.sh && ./configure --disable-shared --enable-gc-assertions && make -j check CFLAGS_EXTRA="-O0 -D NO_INCREMENTAL" Repeat `make...

Support build by cmake on SPARC

1

configure compiles a number of asm files on sparc[64] - sparc_mach_dep.S, sparc_netbsd_mach_dep.s cmake does not at this moment (master, as of commit 56d79d8c4). Thus build with cmake fails: ``` [...

Unexpected segmentation fault in gctest incremental mode on Linux sparc64 and s390x

3

Host: Linux/sparc64 (UltraSparc T5 (Niagara5), 64 threads) Source: master (86278a3d) Occurrence: rare How to: ./configure && make -j check CFLAGS_EXTRA="-O3 -march=native" Output (gctest): Switched to incremental mode Emulating dirty bits...

Setup fuzzing

1

OSS-Fuzz guide: https://google.github.io/oss-fuzz/getting-started/new-project-guide/ Also, add oss-fuzz badge to README.

As of commit 0f29bb06 (in thread_local_alloc.h): * If clang and arch is not arm then USE_PTHREAD_SPECIFIC is defined * If Linux/arm then USE_PTHREAD_SPECIFIC is defined Related issue #462

SIGSEGV in threadkeytest (Linux/x64)

16

Host: Ubuntu 16.04/x64 Compiler: gcc-5.5.0 Glibc: 2.23-0ubuntu10 Source: latest master (0c0e4cd) How to reproduce: * ./configure --enable-gc-assertions --disable-munmap && make check * run gctest in a loop in a terminal...

Support 128-bit pointers (protected mode) on E2K

5

Default compilation mode is 64-bit (as if -m64 option is passed). If -m128 option is passed to gcc, the following predefined macros are changed: ``` #undef __ptr64__ #define __ptr128__ 1...