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-rw-r--r--libc/sysdeps/linux/i386/bits/syscalls.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/i386/bits/syscalls.h b/libc/sysdeps/linux/i386/bits/syscalls.h
index 9184bd6c3..eeafb3a48 100644
--- a/libc/sysdeps/linux/i386/bits/syscalls.h
+++ b/libc/sysdeps/linux/i386/bits/syscalls.h
@@ -43,9 +43,12 @@
/* We need some help from the assembler to generate optimal code.
* We define some macros here which later will be used. */
+/* gcc>=4.6 with LTO need the same guards as IMA (a.k.a --combine) did.
+ * See gcc.gnu.org/PR47577 */
+/* FIXME: drop these b* macros! */
__asm__ (
-#ifdef __DOMULTI__
+#if defined __DOMULTI__ || __GNUC_PREREQ (4, 6)
/* Protect against asm macro redefinition (happens in __DOMULTI__ mode).
* Unfortunately, it ends up visible in .o files. */
".ifndef _BITS_SYSCALLS_ASM\n\t"
@@ -92,7 +95,7 @@ __asm__ (
".endif\n\t"
".endm\n\t"
-#ifdef __DOMULTI__
+#if defined __DOMULTI__ || __GNUC_PREREQ (4, 6)
".endif\n\t" /* _BITS_SYSCALLS_ASM */
#endif
);