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Max gerrit-no-reply at lists.osmocom.org
Review at https://gerrit.osmocom.org/2007
Fix overloading ambiguity
Fix error introduced in 1275a3f91a744e011b0dba82b09124d249c7abb5 by
explicitly casting to bigger signed type before computing abs().
The error was:
bts.cpp: In member function ‘uint32_t BTS::rfn_to_fn(uint32_t)’:
bts.cpp:554:25: error: call of overloaded ‘abs(uint32_t)’ is ambiguous
if (abs(rfn - m_cur_rfn) > RFN_THRESHOLD) {
^
In file included from /usr/include/c++/6/cstdlib:75:0,
from /usr/include/c++/6/stdlib.h:36,
from /usr/include/osmocom/core/linuxrbtree.h:97,
from /usr/include/osmocom/core/timer.h:35,
from ./bts.h:29,
from bts.cpp:21:
/usr/include/stdlib.h:735:12: note: candidate: int abs(int)
extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
^~~
In file included from /usr/include/c++/6/stdlib.h:36:0,
from /usr/include/osmocom/core/linuxrbtree.h:97,
from /usr/include/osmocom/core/timer.h:35,
from ./bts.h:29,
from bts.cpp:21:
/usr/include/c++/6/cstdlib:185:3: note: candidate: __int128 std::abs(__int128)
abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; }
^~~
/usr/include/c++/6/cstdlib:180:3: note: candidate: long long int std::abs(long long int)
abs(long long __x) { return __builtin_llabs (__x); }
^~~
/usr/include/c++/6/cstdlib:172:3: note: candidate: long int std::abs(long int)
abs(long __i) { return __builtin_labs(__i); }
Change-Id: Ib6d895a97aa35414f245ea4406c6e78f1b4fb5b8
---
M src/bts.cpp
1 file changed, 1 insertion(+), 1 deletion(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-pcu refs/changes/07/2007/1
diff --git a/src/bts.cpp b/src/bts.cpp
index 548d000..c19a37e 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -550,7 +550,7 @@
* number exceeds a certain limit, we need to assume that the incoming
* rach request belongs to a the previous rfn period. To correct this,
* we roll back the rounded frame number by one RFN_MODULUS */
- if (abs(rfn - m_cur_rfn) > RFN_THRESHOLD) {
+ if (abs((int64_t)rfn - m_cur_rfn) > RFN_THRESHOLD) {
LOGP(DRLCMAC, LOGL_DEBUG,
"Race condition between rfn (%u) and m_cur_fn (%u) detected: rfn belongs to the previos modulus %u cycle, wrappng...\n",
rfn, m_cur_fn, RFN_MODULUS);
--
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Ib6d895a97aa35414f245ea4406c6e78f1b4fb5b8
Gerrit-PatchSet: 1
Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Owner: Max <msuraev at sysmocom.de>