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authorFlorian Weimer <fweimer@redhat.com>2019-05-27 12:57:45 +0200
committerFlorian Weimer <fweimer@redhat.com>2019-05-27 12:57:45 +0200
commit85188d8211698d1a255f0aec6529546db5c56de3 (patch)
tree22642bf4a1b9068291ebb49ec9204a1f9ac2d15c /nptl
parent5c23c82195fc9e95ae34180250f64438f1e6fb0b (diff)
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nptl: Add comment to __pthread_get_minstack about external users
Diffstat (limited to 'nptl')
-rw-r--r--nptl/nptl-init.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/nptl/nptl-init.c b/nptl/nptl-init.c
index 2926558b91..73935f8be4 100644
--- a/nptl/nptl-init.c
+++ b/nptl/nptl-init.c
@@ -407,6 +407,14 @@ strong_alias (__pthread_initialize_minimal_internal,
 	      __pthread_initialize_minimal)
 
 
+/* This function is internal (it has a GLIBC_PRIVATE) version, but it
+   is widely used (either via weak symbol, or dlsym) to obtain the
+   __static_tls_size value.  This value is then used to adjust the
+   value of the stack size attribute, so that applications receive the
+   full requested stack size, not diminished by the TCB and static TLS
+   allocation on the stack.  Once the TCB is separately allocated,
+   this function should be removed or renamed (if it is still
+   necessary at that point).  */
 size_t
 __pthread_get_minstack (const pthread_attr_t *attr)
 {