[libc-commits] [libc] b659abe - [libc] Fix vdso VER_FLG_BASE redefinition in overlay mod. (#108628)

[via libc-commits]

Author: lntue
Date: 2024-09-13T15:06:20-04:00
New Revision: b659abef48efba6e380c0cc1aeae13e656368011

URL: https://github.com/llvm/llvm-project/commit/b659abef48efba6e380c0cc1aeae13e656368011
DIFF: https://github.com/llvm/llvm-project/commit/b659abef48efba6e380c0cc1aeae13e656368011.diff

LOG: [libc] Fix vdso VER_FLG_BASE redefinition in overlay mod. (#108628)

Added: 
    

Modified: 
    libc/src/__support/OSUtil/linux/vdso.cpp

Removed: 
    


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diff  --git a/libc/src/__support/OSUtil/linux/vdso.cpp b/libc/src/__support/OSUtil/linux/vdso.cpp
index cb43764badad1f..8c9bd3e1bcc72b 100644
--- a/libc/src/__support/OSUtil/linux/vdso.cpp
+++ b/libc/src/__support/OSUtil/linux/vdso.cpp
@@ -57,7 +57,9 @@ struct Verdef {
 // https://refspecs.linuxfoundation.org/LSB_1.3.0/gLSB/gLSB/symversion.html#SYMVERTBL
 cpp::string_view find_version(Verdef *verdef, ElfW(Half) * versym,
                               const char *strtab, size_t idx) {
+#ifndef VER_FLG_BASE
   constexpr ElfW(Half) VER_FLG_BASE = 0x1;
+#endif
   if (!versym)
     return "";
   ElfW(Half) identifier = versym[idx] & 0x7FFF;