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linux: Constify rfv variable in dl_vdso_vsym

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Compilers may decide to put the rfv variable in .data rather than on
the stack.  It's slightly better to put it in .data.rel.ro.local
instead.  Regardles of that, making it const may enable further
optimisations.  Found when examining relative relocations (GOT ones
in particular) as part of enabling static-pie for PowerPC64.
This commit is contained in:
Alan Modra 2022-01-22 13:32:39 +10:30
parent c0efbf8920
commit 30afd8c44d
1 changed files with 1 additions and 1 deletions
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sysdeps/unix/sysv/linux/dl-vdso.h
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@ -45,7 +45,7 @@ dl_vdso_vsym (const char *name)
ElfW (Sym) wsym = { 0 };
wsym.st_info = (unsigned char) ELFW (ST_INFO (STB_WEAK, STT_NOTYPE));
struct r_found_version rfv = { VDSO_NAME, VDSO_HASH, 1, NULL };
const struct r_found_version rfv = { VDSO_NAME, VDSO_HASH, 1, NULL };
/* Search the scope of the vdso map. */
const ElfW (Sym) *ref = &wsym;