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All platforms return the main executable as the first dl_phdr_info. FreeBSD, NetBSD, Solaris, and Linux-musl place the executable name in the dlpi_name field of this entry. It appears that only Linux-glibc uses the empty string. To make this work generically on all platforms, unconditionally skip the first object (like is currently done for FreeBSD and NetBSD). This fixes first DSO detection on Linux-musl. It also would likely fix detection on Solaris/Illumos if it were to gain PIE support (since dlpi_addr would not be NULL). Additionally, only skip the Linux VDSO on linux. Finally, use the empty string as the "seen first dl_phdr_info" marker rather than (char *)-1. If there was no other object, we would try to dereference it for a string comparison. Reviewed By: MaskRay, vitalybuka Differential Revision: https://reviews.llvm.org/D119515
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================