forked from OSchip/llvm-project
ad294e572b
Previously, on GLibc systems, the interceptor was calling __compat_regexec
(regexec@GLIBC_2.2.5) insead of the newer __regexec (regexec@GLIBC_2.3.4).
The __compat_regexec strips the REG_STARTEND flag but does not report an
error if other flags are present. This can result in infinite loops for
programs that use REG_STARTEND to find all matches inside a buffer (since
ignoring REG_STARTEND means that the search always starts from the first
character).
The underlying issue is that GLibc's dlsym(RTLD_NEXT, ...) appears to
always return the oldest versioned symbol instead of the default. This
means it does not match the behaviour of dlsym(RTLD_DEFAULT, ...) or the
behaviour documented in the manpage.
It appears a similar issue was encountered with realpath and worked around
in
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| .. | ||
| BlocksRuntime | ||
| asan | ||
| builtins | ||
| cfi | ||
| crt | ||
| dfsan | ||
| fuzzer | ||
| gwp_asan | ||
| hwasan | ||
| interception | ||
| lsan | ||
| memprof | ||
| msan | ||
| profile | ||
| safestack | ||
| sanitizer_common | ||
| scudo | ||
| shadowcallstack | ||
| tsan | ||
| ubsan | ||
| ubsan_minimal | ||
| xray | ||
| .clang-format | ||
| .clang-tidy | ||
| CMakeLists.txt | ||
| lit.common.cfg.py | ||
| lit.common.configured.in | ||