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 committed by thorkill
parent 8e3edeec3d
commit a39154ecac
1 changed files with 2 additions and 2 deletions
Show stats 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],