llvm-project/clang/test/Sema/pre-c2x-compat.c

// RUN: %clang_cc1 %s -std=c2x -Wpre-c2x-compat -pedantic -fsyntax-only -verify

int digit_seps = 123'456; // expected-warning {{digit separators are incompatible with C standards before C2x}}
Add support for digit separators in C2x. WG14 adopted N2626 at the meetings this week. This commit adds support for using ' as a digit separator in a numeric literal which is compatible with the C++ feature. 2021-03-12 20:21:03 +08:00			`// RUN: %clang_cc1 %s -std=c2x -Wpre-c2x-compat -pedantic -fsyntax-only -verify`

			`int digit_seps = 123'456; // expected-warning {{digit separators are incompatible with C standards before C2x}}`