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Fixed small distance replies on GEODIST and GEO commands WITHDIST (#11631) 

Fixes a regression introduced by #11552 in 7.0.6.
it causes replies in the GEO commands to contain garbage when the
result is a very small distance (less than 1)
Includes test to confirm indeed with junk in buffer now we properly reply
This commit is contained in:
filipe oliveira 2022-12-15 20:25:38 +00:00 committed by GitHub
parent df327b8bd5
commit d7b4c9175e
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 24 additions and 7 deletions
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24
src/util.c
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@ -656,9 +656,7 @@ int fixedpoint_d2string(char *dst, size_t dstlen, double dvalue, int fractional_
if (dvalue == 0) {
dst[0] = '0';
dst[1] = '.';
for (int i = 0; i < fractional_digits; i++) {
dst[2 + i] = '0';
}
memset(dst + 2, '0', fractional_digits);
dst[fractional_digits+2] = '\0';
return fractional_digits + 2;
}
@ -707,10 +705,8 @@ int fixedpoint_d2string(char *dst, size_t dstlen, double dvalue, int fractional_
}
dst[integer_digits] = '.';
int size = integer_digits + 1 + fractional_digits;
/* fill with 0 if required until fractional_digits */
for (int i = integer_digits + 1; i < fractional_digits; i++) {
dst[i] = '0';
}
/* fill with 0 from fractional digits until size */
memset(dst + integer_digits + 1, '0', fractional_digits);
int next = size - 1;
while (value >= 100) {
int const i = (value % 100) * 2;
@ -1282,6 +1278,20 @@ static void test_fixedpoint_d2string(void) {
sz = fixedpoint_d2string(buf, sizeof buf, v, 1);
assert(sz == 3);
assert(!strcmp(buf, "0.0"));
/* set junk in buffer */
memset(buf,'A',32);
v = 0.0001;
sz = fixedpoint_d2string(buf, sizeof buf, v, 4);
assert(sz == 6);
assert(buf[sz] == '\0');
assert(!strcmp(buf, "0.0001"));
/* set junk in buffer */
memset(buf,'A',32);
v = 6.0642951598391699e-05;
sz = fixedpoint_d2string(buf, sizeof buf, v, 4);
assert(sz == 6);
assert(buf[sz] == '\0');
assert(!strcmp(buf, "0.0001"));
v = 0.01;
sz = fixedpoint_d2string(buf, sizeof buf, v, 4);
assert(sz == 6);

7
tests/unit/geo.tcl
View File

@ -516,6 +516,13 @@ start_server {tags {"geo"}} {
assert_equal {point2 point1} [r geosearch points fromlonlat -179 37 bybox 400 400 km asc]
}
test {GEOSEARCH with small distance} {
r del points
r geoadd points -122.407107 37.794300 1
r geoadd points -122.227336 37.794300 2
assert_equal {{1 0.0001} {2 9.8182}} [r GEORADIUS points -122.407107 37.794300 30 mi ASC WITHDIST]
}
foreach {type} {byradius bybox} {
test "GEOSEARCH fuzzy test - $type" {
if {$::accurate} { set attempt 300 } else { set attempt 30 }