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authorFlorian Weimer <fweimer@redhat.com>2022-08-03 11:41:53 +0200
committerFlorian Weimer <fweimer@redhat.com>2022-08-03 11:43:04 +0200
commit9001cb1102cddba54f0e84e147dfbb0356067356 (patch)
tree752100897824af704ceb553e42867960e41a87f7 /elf
parent68e036f27f31c3378201702e182246504fb00f87 (diff)
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assert: Do not use stderr in libc-internal assert
Redirect internal assertion failures to __libc_assert_fail, based on
based on __libc_message, which writes directly to STDERR_FILENO
and calls abort.  Also disable message translation and reword the
error message slightly (adjusting stdlib/tst-bz20544 accordingly).

As a result of these changes, malloc no longer needs its own
redefinition of __assert_fail.

__libc_assert_fail needs to be stubbed out during rtld dependency
analysis because the rtld rebuilds turn __libc_assert_fail into
__assert_fail, which is unconditionally provided by elf/dl-minimal.c.

This change is not possible for the public assert macro and its
__assert_fail function because POSIX requires that the diagnostic
is written to stderr.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'elf')
-rw-r--r--elf/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/elf/Makefile b/elf/Makefile
index fd77d0c7c8..3386f0ce77 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -1283,6 +1283,7 @@ $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os)
 rtld-stubbed-symbols = \
   __GI___pthread_disable_asynccancel \
   __GI___pthread_enable_asynccancel \
+  __libc_assert_fail \
   __pthread_disable_asynccancel \
   __pthread_enable_asynccancel \
   calloc \