From d68c7aa7e633e6bd191d3964eb5a941f8d66f152 Mon Sep 17 00:00:00 2001 From: "Duncan P. N. Exon Smith" Date: Mon, 16 Dec 2013 03:20:06 +0000 Subject: Stop crashing on empty asm input constraints An empty string for an ASM input constraint is invalid, and will crash during clang CodeGen. Change TargetInfo::validateInputConstraint to reject an empty string. llvm-svn: 197362 --- clang/test/Sema/asm.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'clang/test/Sema/asm.c') diff --git a/clang/test/Sema/asm.c b/clang/test/Sema/asm.c index c81f16a3875..1559b228c87 100644 --- a/clang/test/Sema/asm.c +++ b/clang/test/Sema/asm.c @@ -13,6 +13,9 @@ void f() { asm ("foo\n" : "=a" (i) : "[" (i)); // expected-error {{invalid input constraint '[' in asm}} asm ("foo\n" : "=a" (i) : "[foo" (i)); // expected-error {{invalid input constraint '[foo' in asm}} asm ("foo\n" : "=a" (i) : "[symbolic_name]" (i)); // expected-error {{invalid input constraint '[symbolic_name]' in asm}} + + asm ("foo\n" : : "" (i)); // expected-error {{invalid input constraint '' in asm}} + asm ("foo\n" : "=a" (i) : "" (i)); // expected-error {{invalid input constraint '' in asm}} } void clobbers() { -- cgit v1.2.3