Jakub Jelinek
d9f462fb37
As mentioned in the PR, SIGSTKSZ is no longer a compile time constant in glibc 2.34 and later, so static const uptr kAltStackSize = SIGSTKSZ * 4; needs dynamic initialization, but is used by a function called indirectly from .preinit_array and therefore before the variable is constructed. This results in using 0 size instead and all asan instrumented programs die with: ==91==ERROR: AddressSanitizer failed to allocate 0x0 (0) bytes of SetAlternateSignalStack (error code: 22) Here is a cherry-pick from upstream to fix this. 2021-04-17 Jakub Jelinek <jakub@redhat.com> PR sanitizer/100114 * sanitizer_common/sanitizer_posix_libcdep.cpp: Cherry-pick llvm-project revisions 82150606fb11d28813ae6da1101f5bda638165fe and b93629dd335ffee2fc4b9b619bf86c3f9e6b0023.
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