Workaround 'condition x==2 is always false' cppcheck FP in setjmp_t

Computation of x local variable (stored in a register) in setjmp_t.c
is more disguised now.

* tools/setjmp_t.c (a_str): New global variable (initialized to "a").
* tools/setjmp_t.c (main): Pass a_str (instead of "a") to strlen().

1 files changed, 3 insertions, 1 deletions

diff --git a/tools/setjmp_t.c b/tools/setjmp_t.c
index 33f10603..fc9b7c82 100644
--- a/tools/setjmp_t.c
+++ b/tools/setjmp_t.c
@@ -76,12 +76,14 @@ word (*volatile nested_sp_fn)(void) = nested_sp;
 
 int g(int x);
 
+char *a_str = "a";
+
 int main(void)
 {
     volatile word sp;
     unsigned ps = GETPAGESIZE();
     JMP_BUF b;
-    register int x = (int)strlen("a");  /* 1, slightly disguised */
+    register int x = (int)strlen(a_str); /* 1, slightly disguised */
     static volatile int y = 0;
 
     sp = (word)(&sp);