Segmentation fault (using clang)

[Gaetano Mendola]

The following snippet drives cppcheck to segfault when using it with --clang

#include <type_traits>
#include <stdint.h>

std::enable_if_t<sizeof(uint64_t)==8>
foo() {
}

float bar() {
}

int main() {
  foo();
  bar();
}

[CHR]

With head I get

Checking bar.cpp...
Bailing out from checking bar.cpp since there was an internal error: invalid stoull argument

What is your exact command line?

[Gaetano Mendola]

~/Downloads/cppcheck-2.8/cppcheck --clang main.cpp
Checking main.cpp...
Segmentation fault (core dumped)

$ clang --version
Ubuntu clang version 15.0.0-++20220706104508+5d8077565e41-1~exp1~20220706104611.584
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

[Gaetano Mendola]

Backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x00005555557e7b23 in Token::tokAt(int) const ()
(gdb) bt
#0  0x00005555557e7b23 in Token::tokAt(int) const ()
#1  0x000055555579b225 in isUnknownType(Token const*, Token const*) ()
#2  0x000055555579e89b in Function::returnsReference(Function const*, bool) ()
#3  0x00005555558792dd in valueFlowLifetimeFunction(Token*, TokenList*, ErrorLogger*, Settings const*) ()
#4  0x0000555555883bfb in valueFlowLifetime(TokenList*, SymbolDatabase*, ErrorLogger*, Settings const*) [clone .constprop.0] ()
#5  0x0000555555887a1b in ValueFlow::setValues(TokenList*, SymbolDatabase*, ErrorLogger*, Settings const*) ()
#6  0x0000555555712ef5 in CppCheck::check(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) ()
#7  0x00005555558af15f in CppCheckExecutor::check_internal(CppCheck&) ()
#8  0x00005555558b15cc in CppCheckExecutor::check(int, char const* const*) ()
#9  0x00005555555ffcf2 in main ()

[CHR]

See https://sourceforge.net/p/cppcheck/discussion/general/thread/728d08b726/