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dlfcn: Move dlerror into libc

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The symbol was moved using scripts/move-symbol-to-libc.py.

There is a minor functionality enhancement: dlerror now sets
errno if it was set as part of the exception.  (This is the result
of using %m in asprintf, to avoid the strerror PLT call.) The
previous errno value upon function return was unpredictable.
Documenting this as a feature is premature; we need to make sure
that the error codes are meaningful when they are set by the dynamic
loader.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
2021-06-02 07:32:20 +02:00
parent c44838ebf8
commit a23c28ec0d
68 changed files with 104 additions and 66 deletions
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2
sysdeps/unix/sysv/linux/nios2/libc.abilist
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@ -763,6 +763,7 @@ GLIBC_2.21 dirfd F
GLIBC_2.21 dirname F
GLIBC_2.21 div F
GLIBC_2.21 dl_iterate_phdr F
GLIBC_2.21 dlerror F
GLIBC_2.21 dngettext F
GLIBC_2.21 dprintf F
GLIBC_2.21 drand48 F
@ -2375,6 +2376,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 dlerror F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F

1
sysdeps/unix/sysv/linux/nios2/libdl.abilist
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@ -1,7 +1,6 @@
GLIBC_2.21 dladdr F
GLIBC_2.21 dladdr1 F
GLIBC_2.21 dlclose F
GLIBC_2.21 dlerror F
GLIBC_2.21 dlinfo F
GLIBC_2.21 dlmopen F
GLIBC_2.21 dlopen F