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Fix a regression from my fix to PR2631. Fixes PR2692. 

llvm-svn: 55083
This commit is contained in:
Eli Friedman 2008-08-20 22:17:17 +00:00
parent 002ad1274b
commit 1be92d297a
2 changed files with 12 additions and 0 deletions
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2
clang/lib/Sema/SemaExpr.cpp
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@ -2613,6 +2613,8 @@ Sema::ExprResult Sema::ActOnVAArg(SourceLocation BuiltinLoc,
// a pointer for va_arg.
if (VaListType->isArrayType())
VaListType = Context.getArrayDecayedType(VaListType);
// Make sure the input expression also decays appropriately.
UsualUnaryConversions(E);
if (CheckAssignmentConstraints(VaListType, E->getType()) != Compatible)
return Diag(E->getLocStart(),

10
clang/test/Sema/va_arg_x86_64.c
View File

@ -1,6 +1,16 @@
// RUN: clang -fsyntax-only -verify -triple=x86_64-unknown-freebsd7.0 %s
// PR2631
char* foo(char *fmt, __builtin_va_list ap)
{
return __builtin_va_arg((ap), char *);
}
// PR2692
typedef __builtin_va_list va_list;
static char *f (char * (*g) (char **, int), char **p, ...) {
char *s;
va_list v;
s = g (p, __builtin_va_arg(v, int));
}