[clang-tidy] bugprone-signal-handler only looks for signal(), not sigaction()

[tavianator]

I tried to use the bigprone-signal-handler check to find signal safety issues, but it didn't find any, even when I added malloc(1) into my signal handler. Looking closer, it seems to check for signal() calls, but not sigaction() calls:

llvm-project/clang-tools-extra/clang-tidy/bugprone/SignalHandlerCheck.cpp

Lines 356 to 357 in c416034

	auto SignalFunction = functionDecl(hasAnyName("::signal", "::std::signal"),
	parameterCountIs(2), isStandardFunction());

[llvmbot]

@llvm/issue-subscribers-clang-tidy

Author: Tavian Barnes (tavianator)

I tried to use the bigprone-signal-handler check to find signal safety issues, but it didn't find any, even when I added `malloc(1)` into my signal handler. Looking closer, it seems to check for `signal()` calls, but not `sigaction()` calls: https://github.com/llvm/llvm-project/blob/c4160343741731680359feb2652aa9e4d2376e31/clang-tools-extra/clang-tidy/bugprone/SignalHandlerCheck.cpp#L356-L357