Neels Hofmeyr has uploaded this change for review. (
https://gerrit.osmocom.org/10066
Change subject: utils_test: fix isqrt_test calculation range
......................................................................
utils_test: fix isqrt_test calculation range
Multiplying the uint16_t x by itself seems to default to be calculated in
int32_t range, while it obviously needs uint32_t. This causes sporadic
sanitizer barfs:
Testing integer square-root
utils_test.c:445:18: runtime error: signed integer overflow: 60369 * 60369
cannot be represented in type 'int'
The final result is still correct, because it is in fact interpreted as
uint32_t.
Cast to uint32_t to make sure the sanitizer doesn't complain.
Change-Id: I83c14e38deaa466d977ee43c9420534ed90f090d
---
M tests/utils/utils_test.c
1 file changed, 1 insertion(+), 1 deletion(-)
git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/66/10066/1
diff --git a/tests/utils/utils_test.c b/tests/utils/utils_test.c
index cb4e476..84964f5 100644
--- a/tests/utils/utils_test.c
+++ b/tests/utils/utils_test.c
@@ -439,7 +439,7 @@
x = r * (UINT16_MAX/RAND_MAX);
else
x = r;
- uint32_t sq = x*x;
+ uint32_t sq = (uint32_t)x*x;
uint32_t y = osmo_isqrt32(sq);
if (y != x)
printf("ERROR: x=%u, sq=%u, osmo_isqrt(%u) = %u\n", x,
sq, sq, y);
--
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Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I83c14e38deaa466d977ee43c9420534ed90f090d
Gerrit-Change-Number: 10066
Gerrit-PatchSet: 1
Gerrit-Owner: Neels Hofmeyr <[email protected]>
