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std.cfg: Improved configuration of 'strncpy', which is vulnerable for overlapping write issues.

This commit is contained in:
orbitcowboy 2021-07-09 09:48:24 +02:00
parent 1c60dc090a
commit 58811808d5
2 changed files with 7 additions and 0 deletions
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1
cfg/std.cfg
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@ -4853,6 +4853,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
<returnValue type="char *"/> <returnValue type="char *"/>
<noreturn>false</noreturn> <noreturn>false</noreturn>
<leak-ignore/> <leak-ignore/>
<not-overlapping-data ptr1-arg="1" ptr2-arg="2" size-arg="3"/>
<arg nr="1" direction="out"> <arg nr="1" direction="out">
<not-null/> <not-null/>
<minsize type="argvalue" arg="3"/> <minsize type="argvalue" arg="3"/>

6
test/cfg/std.cpp
View File

@ -30,6 +30,12 @@
#include <functional> #include <functional>
#include <bitset> #include <bitset>
char * overlappingWriteFunction_strncpy(char *buf)
{
// cppcheck-suppress overlappingWriteFunction
return strncpy(&buf[0], &buf[3], 2U);
}
std::bitset<10> std_bitset_test_ignoredReturnValue() std::bitset<10> std_bitset_test_ignoredReturnValue()
{ {
std::bitset<10> b1("1111010000"); std::bitset<10> b1("1111010000");