ccan: update to latest.

configurator failed under clang:

checking for #pragma omp and -fopenmp support... ccan/tools/configurator/configurator: Test for HAVE_OPENMP failed with 32512:
./configurator.out: error while loading shared libraries: libomp.so: cannot open shared object file: No such file or directory

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/README

@@ -1,3 +1,3 @@
 CCAN imported from http://ccodearchive.net.
 
-CCAN version: init-2481-gce4660aa
+CCAN version: init-2483-g920ca95d

ccan/ccan/bitmap/bitmap.c

@@ -13,8 +13,8 @@ void bitmap_zero_range(bitmap *bitmap, unsigned long n, unsigned long m)
 {
 	unsigned long an = BIT_ALIGN_UP(n);
 	unsigned long am = BIT_ALIGN_DOWN(m);
-	bitmap_word headmask = -1ULL >> (n % BITMAP_WORD_BITS);
-	bitmap_word tailmask = ~(-1ULL >> (m % BITMAP_WORD_BITS));
+	bitmap_word headmask = BITMAP_WORD_1 >> (n % BITMAP_WORD_BITS);
+	bitmap_word tailmask = ~(BITMAP_WORD_1 >> (m % BITMAP_WORD_BITS));
 
 	assert(m >= n);
 
@@ -38,8 +38,8 @@ void bitmap_fill_range(bitmap *bitmap, unsigned long n, unsigned long m)
 {
 	unsigned long an = BIT_ALIGN_UP(n);
 	unsigned long am = BIT_ALIGN_DOWN(m);
-	bitmap_word headmask = -1ULL >> (n % BITMAP_WORD_BITS);
-	bitmap_word tailmask = ~(-1ULL >> (m % BITMAP_WORD_BITS));
+	bitmap_word headmask = BITMAP_WORD_1 >> (n % BITMAP_WORD_BITS);
+	bitmap_word tailmask = ~(BITMAP_WORD_1 >> (m % BITMAP_WORD_BITS));
 
 	assert(m >= n);
 
@@ -65,7 +65,7 @@ static int bitmap_clz(bitmap_word w)
 	return __builtin_clzl(w);
 #else
 	int lz = 0;
-	bitmap_word mask = 1UL << (BITMAP_WORD_BITS - 1);
+	bitmap_word mask = (bitmap_word)1 << (BITMAP_WORD_BITS - 1);
 
 	while (!(w & mask)) {
 		lz++;
@@ -81,8 +81,8 @@ unsigned long bitmap_ffs(const bitmap *bitmap,
 {
 	unsigned long an = BIT_ALIGN_UP(n);
 	unsigned long am = BIT_ALIGN_DOWN(m);
-	bitmap_word headmask = -1ULL >> (n % BITMAP_WORD_BITS);
-	bitmap_word tailmask = ~(-1ULL >> (m % BITMAP_WORD_BITS));
+	bitmap_word headmask = BITMAP_WORD_1 >> (n % BITMAP_WORD_BITS);
+	bitmap_word tailmask = ~(BITMAP_WORD_1 >> (m % BITMAP_WORD_BITS));
 
 	assert(m >= n);
 

ccan/ccan/bitmap/bitmap.h

@@ -15,6 +15,9 @@ typedef unsigned long bitmap_word;
 #define BITMAP_NWORDS(_n)	\
 	(((_n) + BITMAP_WORD_BITS - 1) / BITMAP_WORD_BITS)
 
+#define BITMAP_WORD_0		(0)
+#define BITMAP_WORD_1		((bitmap_word)-1UL)
+
 /*
  * We wrap each word in a structure for type checking.
  */

ccan/tools/configurator/configurator.c

@@ -431,7 +431,7 @@ static const struct test base_tests[] = {
 	  "	return i + 1;\n"
 	  "}" },
 	{ "HAVE_OPENMP", "#pragma omp and -fopenmp support",
-	  "INSIDE_MAIN", NULL, NULL,
+	  "INSIDE_MAIN|EXECUTE|MAY_NOT_COMPILE", NULL, NULL,
 	  "int i;\n"
 	  "#pragma omp parallel for\n"
 	  "for(i = 0; i < 0; i++) {};\n"