Has anyone seen a problem like this? I have a C program #include stdio.h char map[0x7fffffff]; int main(void){ printf("!\n"); } When I compile this from the command line and run it, I get the following message: dyld: Library not loaded: /usr/lib/libSystem.B.dylib   Referenced from: /Users/td/./a.out   Reason: image not found Abort trap: 6 If I reduce the size of the array enough (say to 100), or if I malloc the storage, the error goes away and the program runs correctly. I'm using Xcode 12.4, macOS 11.2.3 on a Mac mini (M1, 2020, 16GB). cc --version says it's Apple clang version 12.0.0 (clang-1200.0.32.29) Target: arm64-apple-darwin20.3.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin C++ behaves the same.