PVS/V1051: Ignore "modulo by 1" warning for ARRAY_SIZE. (neovim#14943)

The warning is triggered by the second division when arr is a char array since sizeof(char) is 1. A modulo by 1 may normally indicate a logic error, but in this case it's intended.
mengtanhzc · Jul 3, 2021 · 70223ba · 70223ba
1 parent 05330ba
commit 70223ba
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/nvim/macros.h b/src/nvim/macros.h
@@ -133,6 +133,8 @@
 /// error. A mechanism to detect many (though not all) of those errors at
 /// compile time is implemented. It works by the second division producing
 /// a division by zero in those cases (-Wdiv-by-zero in GCC).
+///
+/// -V:ARRAY_SIZE:1063
 #define ARRAY_SIZE(arr) \
     ((sizeof(arr)/sizeof((arr)[0])) \
      / ((size_t)(!(sizeof(arr) % sizeof((arr)[0])))))