commit b5443cc46dd1485d6c785dd8c65a2c07bd5a17f3
author Bram Moolenaar <Bram@vim.org> Tue Jan 15 20:19:40 2019 +0100
committer Bram Moolenaar <Bram@vim.org> Tue Jan 15 20:19:40 2019 +0100
tree 0d666a666cf4f5bea6b3afdf8a60059e5991ab8c
parent 8e481e8dfe0b82930faf005c7e840c49cbcf4511

patch 8.1.0753: printf format not checked for semsg()

Problem:    printf format not checked for semsg().
Solution:   Add GNUC attribute and fix reported problems. (Dominique Pelle,
            closes #3805)

src/proto.h

diff --git a/src/proto.h b/src/proto.h
index 653c089..48c7b4d 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -108,19 +108,31 @@
 #  ifdef __BORLANDC__
 _RTLENTRYF
 #  endif
-smsg(const char *, ...);
+smsg(const char *, ...)
+#ifdef USE_PRINTF_FORMAT_ATTRIBUTE
+    __attribute__((format(printf, 1, 0)))
+#endif
+    ;
 
 int
 #  ifdef __BORLANDC__
 _RTLENTRYF
 #  endif
-smsg_attr(int, const char *, ...);
+smsg_attr(int, const char *, ...)
+#ifdef USE_PRINTF_FORMAT_ATTRIBUTE
+    __attribute__((format(printf, 2, 3)))
+#endif
+    ;
 
 int
 #  ifdef __BORLANDC__
 _RTLENTRYF
 #  endif
-smsg_attr_keep(int, const char *, ...);
+smsg_attr_keep(int, const char *, ...)
+#ifdef USE_PRINTF_FORMAT_ATTRIBUTE
+    __attribute__((format(printf, 2, 3)))
+#endif
+    ;
 
 int
 #  ifdef __BORLANDC__