j3d1/tinc
1
0
Fork 0
Code Issues 1 Pull requests Releases Wiki Activity

Fix autoconf check for function attributes.

Browse source 
GCC warns when a function attribute has no effect. The autoconf check
turns warnings about attributes into errors, therefore thinking that
they did not work. The reason was that the test function returned void,
which is not suitable for checking both __malloc__ and
__warn_unused_result__.
This commit is contained in:
Guus Sliepen 2015-06-07 22:25:22 +02:00
parent 84ecc972e5
commit ab0576a203
1 changed files with 2 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
m4/attribute.m4
View file

@ -9,8 +9,8 @@ AC_DEFUN([tinc_ATTRIBUTE],
CFLAGS="$CFLAGS -Wall -Werror"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE(
[void test(void) __attribute__ (($1));
void test(void) { return; }
[void *test(void) __attribute__ (($1));
void *test(void) { return (void *)0; }
],
)],
[tinc_cv_attribute_$1=yes],