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PR11002: Make sure we emit sentinel warnings with a valid source location. (Ideally, we want to use the location returned by getLocForEndOfToken, but that is not always successful.) 

llvm-svn: 140658
This commit is contained in:
Eli Friedman 2011-09-27 23:46:37 +00:00
parent ab2dcc8de6
commit 9ab36372db
2 changed files with 13 additions and 5 deletions
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9
clang/lib/Sema/SemaExpr.cpp
View File

@ -253,9 +253,12 @@ void Sema::DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc,
else
NullValue = "(void*) 0";
Diag(MissingNilLoc, diag::warn_missing_sentinel)
<< calleeType
<< FixItHint::CreateInsertion(MissingNilLoc, ", " + NullValue);
if (MissingNilLoc.isInvalid())
Diag(Loc, diag::warn_missing_sentinel) << calleeType;
else
Diag(MissingNilLoc, diag::warn_missing_sentinel)
<< calleeType
<< FixItHint::CreateInsertion(MissingNilLoc, ", " + NullValue);
Diag(D->getLocation(), diag::note_sentinel_here) << calleeType;
}

7
clang/test/Sema/attr-sentinel.c
View File

@ -4,13 +4,15 @@
#define ATTR __attribute__ ((__sentinel__))
void foo1 (int x, ...) ATTR; // expected-note 2 {{function has been explicitly marked sentinel here}}
void foo1 (int x, ...) ATTR; // expected-note 3 {{function has been explicitly marked sentinel here}}
void foo5 (int x, ...) __attribute__ ((__sentinel__(1))); // expected-note {{function has been explicitly marked sentinel here}}
void foo6 (int x, ...) __attribute__ ((__sentinel__(5))); // expected-note {{function has been explicitly marked sentinel here}}
void foo7 (int x, ...) __attribute__ ((__sentinel__(0))); // expected-note {{function has been explicitly marked sentinel here}}
void foo10 (int x, ...) __attribute__ ((__sentinel__(1,1)));
void foo12 (int x, ... ) ATTR; // expected-note {{function has been explicitly marked sentinel here}}
#define FOOMACRO(...) foo1(__VA_ARGS__)
void test1() {
foo1(1, NULL); // OK
foo1(1, 0) ; // expected-warning {{missing sentinel in function call}}
@ -30,6 +32,9 @@ void test1() {
struct A a, b, c;
foo1(3, &a, &b, &c); // expected-warning {{missing sentinel in function call}}
foo1(3, &a, &b, &c, (struct A*) 0);
// PR11002
FOOMACRO(1, 2); // expected-warning {{missing sentinel in function call}}
}