* c.opt (fgnu89-inline): New option.

	* c-opts.c (c_common_post_options): Set default value for
	flag_gnu89_inline.
	* c-decl.c (WANT_C99_INLINE_SEMANTICS): Remove.
	(pop_scope): Check flag_gnu89_inline rather than flag_isoc99 for
	inline functions.
	(diagnose_mismatched_decls, merge_decls, start_decl): Likewise.
	(grokdeclarator, start_function): Likewise.
	* c-cppbuiltin.c (c_cpp_builtins): Define either
	__GNUC_GNU_INLINE__ or __GNUC_STDC_INLINE__.
	* doc/invoke.texi (Option Summary): Mention -fgnu89-inline.
	(C Dialect Options): Document -fgnu89-inline.
	* doc/extend.texi (Function Attributes): Explain what the
	gnu_inline attribute does.
	* doc/cpp.texi (Common Predefined Macros): Document
	__GNUC_GNU_INLINE__ and __GNUC_STDC_INLINE__.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@122565 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 28 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/inline-19.c b/gcc/testsuite/gcc.dg/inline-19.c
new file mode 100644
index 00000000000..96dceb43356
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/inline-19.c
@@ -0,0 +1,28 @@
+/* Test -fgnu89-extern-inline.  */
+/* { dg-do compile } */
+/* { dg-options "-fgnu89-inline" } */
+/* { dg-final { scan-assembler "func1" } } */
+/* { dg-final { scan-assembler-not "func2" } } */
+/* { dg-final { scan-assembler "func3" } } */
+/* { dg-final { scan-assembler "func4" } } */
+
+#ifndef __GNUC_GNU_INLINE__
+#error __GNUC_GNU_INLINE__ is not defined
+#endif
+
+#ifdef __GNUC_STDC_INLINE__
+#error __GNUC_STDC_INLINE__ is defined
+#endif
+
+extern inline int func1 (void) { return 0; }
+inline int func1 (void) { return 1; }
+
+extern int func2 (void);
+extern inline int func2 (void) { return 2; }
+
+inline int func3 (void);
+inline int func3 (void) { return 3; }
+
+extern int func4 (void);
+extern inline int func4 (void) { return 4; }
+int func4 (void) { return 5; }