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Fix sysdeps/ia64/fpu/libm-symbols.h for inclusion in testcases.

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IA64 builds in math/ use "-include libm-symbols.h".  This breaks the
signgam tests, which rely on undefining _LIBC and feature test macros
and defining _ISOMAC before including system headers to get them to
provide only ISO C declarations (libm-symbols.h ending up indirectly
including headers which result in this breaking); similarly, it breaks
C++ tests as some headers included from libm-symbols.h are not ready
for inclusion in C++ code.  This patch disables the contents of
libm-symbols.h if __STRICT_ANSI__ or __cplusplus are defined to avoid
this problem (this header can only test symbols defined before the
source file is processed, so can't test _ISOMAC because that's defined
within the source file, after this header is included).

Tested (compilation only) for ia64.

	* sysdeps/ia64/fpu/libm-symbols.h: Make contents conditional on
	[!__STRICT_ANSI__ && !__cplusplus].
This commit is contained in:
Joseph Myers 2016-11-28 23:12:49 +00:00
parent c9070e6305
commit 547e970409
2 changed files with 25 additions and 18 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2016-11-28 Joseph Myers <joseph@codesourcery.com>
* sysdeps/ia64/fpu/libm-symbols.h: Make contents conditional on
[!__STRICT_ANSI__ && !__cplusplus].
2016-11-28 H.J. Lu <hongjiu.lu@intel.com>
[BZ #20750]

38
sysdeps/ia64/fpu/libm-symbols.h
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@ -1,58 +1,60 @@
#include <sysdep.h>
#undef ret /* get rid of the stupid "ret" macro; it breaks br.ret */
#if !defined __STRICT_ANSI__ && !defined __cplusplus
# include <sysdep.h>
# undef ret /* get rid of the stupid "ret" macro; it breaks br.ret */
/* Support for compatible assembler handling. */
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
# define ASM_SIZE_DIRECTIVE(name) .size name,.-name
#define LOCAL_LIBM_ENTRY(name) \
# define LOCAL_LIBM_ENTRY(name) \
.proc name; \
name:
#define LOCAL_LIBM_END(name) \
# define LOCAL_LIBM_END(name) \
.endp name; \
ASM_SIZE_DIRECTIVE(name)
#define RODATA .rodata
#define LOCAL_OBJECT_START(name) \
# define RODATA .rodata
# define LOCAL_OBJECT_START(name) \
name:; \
.type name, @object
#define LOCAL_OBJECT_END(name) \
# define LOCAL_OBJECT_END(name) \
ASM_SIZE_DIRECTIVE(name)
#define GLOBAL_LIBM_ENTRY(name) \
# define GLOBAL_LIBM_ENTRY(name) \
LOCAL_LIBM_ENTRY(name); \
.global name
#define GLOBAL_LIBM_END(name) LOCAL_LIBM_END(name)
# define GLOBAL_LIBM_END(name) LOCAL_LIBM_END(name)
#define INTERNAL_LIBM_ENTRY(name) \
# define INTERNAL_LIBM_ENTRY(name) \
GLOBAL_LIBM_ENTRY(__libm_##name); \
.global __libm_##name
#define INTERNAL_LIBM_END(name) GLOBAL_LIBM_END(__libm_##name)
# define INTERNAL_LIBM_END(name) GLOBAL_LIBM_END(__libm_##name)
#define WEAK_LIBM_ENTRY(name) \
# define WEAK_LIBM_ENTRY(name) \
.align 32; \
LOCAL_LIBM_ENTRY(__##name); \
.global __##name; \
__##name:
#define WEAK_LIBM_END(name) \
# define WEAK_LIBM_END(name) \
weak_alias (__##name, name); \
.hidden __##name; \
LOCAL_LIBM_END(__##name); \
ASM_SIZE_DIRECTIVE(__##name); \
.type __##name, @function
#define GLOBAL_IEEE754_ENTRY(name) \
# define GLOBAL_IEEE754_ENTRY(name) \
WEAK_LIBM_ENTRY(name); \
.global __ieee754_##name; \
.hidden __ieee754_##name; \
__ieee754_##name:
#define GLOBAL_IEEE754_END(name) \
# define GLOBAL_IEEE754_END(name) \
WEAK_LIBM_END(name); \
ASM_SIZE_DIRECTIVE(__ieee754_##name); \
.type __ieee754_##name, @function
#if defined ASSEMBLER && IS_IN (libc)
# define __libm_error_support HIDDEN_JUMPTARGET(__libm_error_support)
# if defined ASSEMBLER && IS_IN (libc)
# define __libm_error_support HIDDEN_JUMPTARGET(__libm_error_support)
# endif
#endif