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Update ax_gcc_func_attribute.m4 to serial 13 #11712

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Update ax_gcc_func_attribute.m4 to serial 13 #11712

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8 changes: 6 additions & 2 deletions build/ax_gcc_func_attribute.m4
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@
# flatten
# format
# format_arg
# gnu_format
# gnu_inline
# hot
# ifunc
Expand Down Expand Up @@ -77,7 +78,7 @@
# and this notice are preserved. This file is offered as-is, without any
# warranty.

#serial 9
#serial 13a

AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [
AS_VAR_PUSHDEF([ac_var], [ax_cv_have_func_attribute_$1])
Expand Down Expand Up @@ -132,14 +133,17 @@ AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [
int foo( void ) __attribute__(($1));
],
[fallthrough], [
int foo( void ) {switch (0) { case 1: __attribute__(($1)); case 2: break ; }};
void foo( int x ) {switch (x) { case 1: __attribute__(($1)); case 2: break ; }};
],
[flatten], [
int foo( void ) __attribute__(($1));
],
[format], [
int foo(const char *p, ...) __attribute__(($1(printf, 1, 2)));
],
[gnu_format], [
int foo(const char *p, ...) __attribute__((format(gnu_printf, 1, 2)));
],
[format_arg], [
char *foo(const char *p) __attribute__(($1(1)));
],
Expand Down