bsd.cfg: Added support for strlcat().

Author: orbitcowboy

cfg/bsd.cfg

@@ -135,6 +135,28 @@
     </arg>
     <leak-ignore/>
   </function>
+  <!-- https://www.freebsd.org/cgi/man.cgi?query=strlcat
+       size_t strlcat(char *dst, const char *src, size_t size); -->
+  <function name="strlcat">
+    <returnValue type="size_t"/>
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+      <strz/>
+      <minsize type="argvalue" arg="3"/>
+    </arg>
+    <arg nr="2">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+    <arg nr="3">
+      <not-uninit/>
+      <not-bool/>
+      <valid>0:</valid>
+    </arg>
+  </function>
   <podtype name="FTS"/>
   <podtype name="FTSENT"/>
 </def>

test/cfg/bsd.c

@@ -0,0 +1,28 @@
+// Test library configuration for bsd.cfg
+//
+// Usage:
+// $ cppcheck --library=bsd --check-library --enable=information --error-exitcode=1 --suppress=missingIncludeSystem --inline-suppr test/cfg/bsd.c
+// =>
+// No warnings about bad library configuration, unmatched suppressions, etc. exitcode=0
+//
+
+#include <string.h>
+
+// size_t strlcat(char *dst, const char *src, size_t size);
+void uninitvar_strlcat(char *Ct, const char *S, size_t N)
+{
+    char *ct;
+    char *s;
+    size_t n;
+    // cppcheck-suppress uninitvar
+    (void)strlcat(ct,s,n);
+    // cppcheck-suppress uninitvar
+    (void)strlcat(ct,S,N);
+    // cppcheck-suppress uninitvar
+    (void)strlcat(Ct,s,N);
+    // cppcheck-suppress uninitvar
+    (void)strlcat(Ct,S,n);
+
+    // no warning is expected for
+    (void)strlcat(Ct,S,N);
+}

test/cfg/runtests.sh

@@ -31,6 +31,9 @@ ${CPPCHECK} ${CPPCHECK_OPT} --library=gnu ${DIR}gnu.c
 ${CXX} ${CXX_OPT} ${DIR}qt.cpp
 ${CPPCHECK} --enable=style --enable=information --inconclusive --inline-suppr --error-exitcode=1 --library=qt ${DIR}qt.cpp
 
+# bsd.c
+${CPPCHECK} ${CPPCHECK_OPT} --library=bsd ${DIR}bsd.c
+
 # std.c
 ${CC} ${CC_OPT} ${DIR}std.c
 ${CPPCHECK} ${CPPCHECK_OPT} ${DIR}std.c