From: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Tue, 18 Oct 2022 15:33:52 +0000 (+0100)
Subject: Fix elf/tst-dlmopen-twice to support enough link namespaces
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae60f3996dc52bad4fd8ecb83315fa974549c0e6;p=thirdparty%2Fglibc.git

Fix elf/tst-dlmopen-twice to support enough link namespaces

The test dlmopens 10 namespaces recursively, which requires a glibc
tunable setting, otherwise it may run out of static TLS.
---

diff --git a/elf/Makefile b/elf/Makefile
index 72178d33ffd..399b709a7da 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -2979,6 +2979,7 @@ tst-audit-tlsdesc-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
 $(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-auditmod-tlsdesc.so
 tst-audit-tlsdesc-dlopen-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
 
+tst-dlmopen-twice-ENV = GLIBC_TUNABLES=glibc.rtld.nns=10
 $(objpfx)tst-dlmopen-twice.out: \
   $(objpfx)tst-dlmopen-twice-mod1.so \
   $(objpfx)tst-dlmopen-twice-mod2.so
diff --git a/elf/tst-dlmopen-twice.c b/elf/tst-dlmopen-twice.c
index 70c71fe19c7..dfa58b1505d 100644
--- a/elf/tst-dlmopen-twice.c
+++ b/elf/tst-dlmopen-twice.c
@@ -46,7 +46,7 @@ do_test (void)
   recurse (1);
 
   /* Then with nesting.  The constant needs to be less than the
-     internal DL_NNS namespace constant.  */
+     glibc.rtld.nns tunable (which is between 1 and DL_NNS).  */
   recurse (10);
   return 0;
 }