*/
#include <stdio.h>
#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h> // strerror
-#define TST(t, class, base, val, exp, fmt) do {\
- t ret = strto##class(#val, NULL, base); \
+#define STR_(v) #v
+#define STR(v) STR_(v)
+#define TST(t, class, base, val, exp, fmt, ofs, exp_errno) do {\
+ const char *in = val;\
+ char *end;\
+ errno = 0;\
+ t ret = strto##class(in, &end, base); \
if( ret != exp ) \
- printf("FAIL strto"#class"('"#val"') != "#val" (act 0x"fmt")\n", ret);\
+ fprintf(stderr, "FAIL strto"#class"('%s') != "#exp" (act "fmt")\n", in, ret);\
+ if( end != in+ofs ) \
+ fprintf(stderr, "FAIL strto"#class"('%s') returned wrong end: %p (+%zi) instead of %p (+%zi)\n",\
+ in,end,end-in,in+ofs,(size_t)ofs);\
+ if( exp_errno != errno ) \
+ fprintf(stderr, "FAIL strto"#class"('%s') returned wrong errno, exp '%s', got '%s'\n",\
+ in, strerror(exp_errno), strerror(errno));\
}while(0)
+#define PRIMEBUF(fmt, val) buf_len = snprintf(buf, sizeof(buf), fmt, val)
+
int main(int argc, char *argv[])
{
- TST(unsigned long, ul, 0, 0x10ec, 0x10ec, "%lx");
- TST(unsigned long long, ull, 0, 0xffeed10ec, 0xffeed10ec, "%llx");
+ char buf[64];
+ size_t buf_len;
+
+ // Success cases
+ TST(unsigned long, ul, 0, "0x10ec", 0x10ec, "%lx", 2+4, 0);
+ TST(unsigned long long, ull, 0, "0xffeed10ec", 0xffeed10ec, "%llx", 2+9, 0);
+ TST(unsigned long long, ull, 0, "01234567", 01234567, "%llo", 8, 0);
+ TST(unsigned long long, ull, 0, "1234567", 1234567, "%lld", 7, 0);
+ TST(long long, ll, 0, "-1", -1, "%lld", 2, 0); // -1
+ TST(long long, ll, 0, "100113", 100113, "%lld", strlen(in), 0);
+ TST(long long, ll, 0, "0x101", 0x101, "0x%llx", strlen(in), 0);
+
+ // Invalid strings
+ TST(unsigned long long, ull, 0, "0x", 0, "%llx", 1, 0); // Single 0
+ TST(unsigned long long, ull, 0, "0xg", 0, "%llx", 1, 0); // Single 0
+ TST(unsigned long long, ull, 0, "-a", 0, "%llx", 0, 0); // Nothing
+ TST(long long, ll, 0, "-a", 0, "%lld", 0, 0); // Nothing
+ TST(long long, ll, 0, "-1aaatg", -1, "%lld", 2, 0); // -1 (with traling junk)
+ TST(long long, ll, 0, "-+1aaatg", 0, "%lld", 0, 0); // Nothing
+ TST(long long, ll, 0, "- 1", 0, "%lld", 0, 0); // Nothing
+ TST(long long, ll, 0, "01278 1", 0127, "%lld", 4, 0); // 0127 with junk
+
+ // Range edges
+ PRIMEBUF("0x%llx", ULLONG_MAX);
+ TST(unsigned long long, ull, 0, buf, ULLONG_MAX, "0x%llx", buf_len, 0);
+ PRIMEBUF("%llu", ULLONG_MAX);
+ TST(unsigned long long, ull, 0, buf, ULLONG_MAX, "%llu", buf_len, 0);
+ PRIMEBUF("-%llu", (long long)LONG_MAX);
+ TST(long, l, 0, buf, -LONG_MAX, "%ld", buf_len, 0);
+
+ // Out of range
+ // - When the range limit is hit, valid characters should still be consumed (just not used)
+ TST(unsigned long long, ull, 0, "0x10000FFFF0000FFFF", ULLONG_MAX, "%llx", strlen(in), ERANGE);
+ TST(unsigned long, ul, 0, "0x10000FFFF0000FFFF", ULONG_MAX, "%lx", strlen(in), ERANGE);
+ TST(long, l, 0, "0x10000FFFF0000FFFF", LONG_MAX, "%ld", strlen(in), ERANGE);
+ TST(long, l, 0, "-0x10000FFFF0000FFFF", LONG_MIN, "%ld", strlen(in), ERANGE);
+ if( LONG_MIN < -LONG_MAX )
+ {
+ // Ensure that if -LONG_MIN is greater than LONG_MAX, that converting it leaves a range error
+ PRIMEBUF("%ld", LONG_MIN);
+ TST(long, l, 0, buf+1, LONG_MAX, "%ld", buf_len-1, ERANGE);
+ }
}