From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 1 Dec 2017 23:37:46 +0000 (+0000)
Subject: Base powerpc logbl compat symbols on __logb not logb.
X-Git-Tag: glibc-2.27~352
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0d5ba561c1ef3d4abf060bbdba88c29379d4adbe;p=thirdparty%2Fglibc.git

Base powerpc logbl compat symbols on __logb not logb.

Some powerpc logb implementations define a compat symbol for logbl
based on logb, whereas libm_alias_double defines such a compat symbol
based on __logb instead.  This difference (logb is weak, __logb isn't)
is enough to result in different installed stripped shared libraries.
The difference in the installed libraries isn't significant, but first
changing the compat_symbol calls helps make it possible to validate a
subsequent change to use libm_alias_double by comparison of libraries,
so this patch does such a preliminary change.

Tested with build-many-glibcs.py for all its hard-float powerpc
configurations.

	* sysdeps/powerpc/power7/fpu/s_logb.c
	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Define as compat
	symbol based on __logb, not on logb.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
---

diff --git a/ChangeLog b/ChangeLog
index 27b49cd1b26..9bc63761d62 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2017-12-01  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/powerpc/power7/fpu/s_logb.c
+	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Define as compat
+	symbol based on __logb, not on logb.
+	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
+	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
+	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
+	[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
+
 	* sysdeps/powerpc/fpu/s_rint.c: Include <libm-alias-double.h>.
 	(rint): Define using libm_alias_double.
 	* sysdeps/powerpc/power5+/fpu/s_modf.c: Include
diff --git a/sysdeps/powerpc/power7/fpu/s_logb.c b/sysdeps/powerpc/power7/fpu/s_logb.c
index af74b1d0242..1c7a4a850ba 100644
--- a/sysdeps/powerpc/power7/fpu/s_logb.c
+++ b/sysdeps/powerpc/power7/fpu/s_logb.c
@@ -75,5 +75,5 @@ weak_alias (__logb, logbl)
 #endif
 
 #if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
-compat_symbol (libm, logb, logbl, GLIBC_2_0);
+compat_symbol (libm, __logb, logbl, GLIBC_2_0);
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
index fddd1ecbecb..f178967f0ec 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
@@ -37,5 +37,5 @@ weak_alias (__logb, logbl)
 #endif
 
 #if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
-compat_symbol (libm, logb, logbl, GLIBC_2_0);
+compat_symbol (libm, __logb, logbl, GLIBC_2_0);
 #endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
index d70919e3d4d..c2e9f4d3cee 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
@@ -37,5 +37,5 @@ weak_alias (__logb, logbl)
 #endif
 
 #if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
-compat_symbol (libm, logb, logbl, GLIBC_2_0);
+compat_symbol (libm, __logb, logbl, GLIBC_2_0);
 #endif