GNU C Library master sources branch master updated. glibc-2.27.9000-150-g4dc2380

[jsm28 at sourceware dot org]

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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=4dc23804a220f917f400e2404bc4803cd60491c7

commit 4dc23804a220f917f400e2404bc4803cd60491c7
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Fri Mar 2 22:27:56 2018 +0000

    Fix powerpc ifunc-sel.h build for -Os.
    
    Compiling the testsuite for powerpc (multi-arch configurations) with
    -Os with GCC 7 fails with:
    
    In file included from ifuncmod1.c:7:0,
                     from ifuncdep1.c:3:
    ../sysdeps/powerpc/ifunc-sel.h: In function 'ifunc_sel':
    ../sysdeps/powerpc/ifunc-sel.h:12:3: error: asm operand 2 probably doesn't match constraints [-Werror]
       __asm__ ("mflr 12\n\t"
       ^~~~~~~
    ../sysdeps/powerpc/ifunc-sel.h:12:3: error: asm operand 3 probably doesn't match constraints [-Werror]
    ../sysdeps/powerpc/ifunc-sel.h:12:3: error: asm operand 4 probably doesn't match constraints [-Werror]
    ../sysdeps/powerpc/ifunc-sel.h:12:3: error: impossible constraint in 'asm'
    
    The "i" constraints on function pointers require the function call to
    be inlined so the compiler can see the constant function pointer
    arguments passed to the asm.  This patch marks the relevant functions
    as always_inline accordingly.
    
    Tested that this fixes the -Os testsuite build for
    powerpc-linux-gnu-power4, powerpc64-linux-gnu, powerpc64le-linux-gnu
    with build-many-glibcs.py.
    
    	* sysdeps/powerpc/ifunc-sel.h (ifunc_sel): Make always_inline.
    	(ifunc_one): Likewise.

diff --git a/ChangeLog b/ChangeLog
index 001141c..f2dd409 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2018-03-02  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/powerpc/ifunc-sel.h (ifunc_sel): Make always_inline.
+	(ifunc_one): Likewise.
+
 2018-03-01  DJ Delorie  <dj@delorie.com>
 
 	[BZ #22342]
diff --git a/sysdeps/powerpc/ifunc-sel.h b/sysdeps/powerpc/ifunc-sel.h
index bdb00bf..7112bed 100644
--- a/sysdeps/powerpc/ifunc-sel.h
+++ b/sysdeps/powerpc/ifunc-sel.h
@@ -4,7 +4,7 @@
 
 extern int global;
 
-static inline void *
+static inline __attribute__ ((always_inline)) void *
 inhibit_stack_protector
 ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
 {
@@ -32,7 +32,7 @@ ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
   return ret;
 }
 
-static inline void *
+static inline __attribute__ ((always_inline)) void *
 inhibit_stack_protector
 ifunc_one (int (*f1) (void))
 {

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                   |    5 +++++
 sysdeps/powerpc/ifunc-sel.h |    4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)


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