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/* PR c/93812 - ICE on redeclaration of an attribute format function without
protoype
It's not clear that attribute format should be accepted on functions
without a prototype. If it's decided that it shouldn't be the tests
here will need to be adjusted.
{ dg-do compile }
{ dg-options "-Wall" } */
#define FMT(n1, n2) __attribute__((__format__(__printf__, n1, n2)))
// Exercise function declarations.
FMT (1, 2) void print1 ();
FMT (2, 3) void print2 ();
void print2 ();
FMT (3, 4) void print3 ();
FMT (3, 4) void print3 ();
FMT (1, 2) void print4 ();
void print4 (void); // { dg-warning "'format' attribute cannot be applied to a function that does not take variable arguments" }
void print5 ();
FMT (1, 2) void print5 (void); // { dg-warning "\\\[-Wattributes" }
FMT (1, 2) void print6 ();
void print6 (const char*, ...); // { dg-error "conflicting types" }
void print7 (const char*, ...);
FMT (1, 2) void print7 (); // { dg-error "conflicting types" }
// Exercise function calls.
void test_print (void)
{
print1 ("%i %s", 123, "");
print1 ("%s %i", 123, 123); // { dg-warning "\\\[-Wformat" }
print2 (0, "%s %i", "", 123);
print2 (1, "%i %s", "", 123); // { dg-warning "\\\[-Wformat" }
print3 (0, 1, "%s %i", "", 123);
print3 (1, 2, "%i %s", "", 123); // { dg-warning "\\\[-Wformat" }
// Just verify there's no ICE.
print4 ();
print5 ();
print6 ("%i %s", 123, "");
}
// Exercise declarations of pointers to functions.
FMT (1, 2) void (*pfprint1)();
FMT (2, 3) void (*pfprint2)();
void (*pfprint2)();
FMT (3, 4) void (*pfprint3)();
FMT (3, 4) void (*pfprint3)();
FMT (1, 2) void (*pfprint4)();
void (*pfprint4)(void); // { dg-warning "'format' attribute cannot be applied to a function that does not take variable arguments" }
void (*pfprint5)();
FMT (1, 2) void (*pfprint5)(void); // { dg-warning "\\\[-Wattributes" }
FMT (1, 2) void (*pfprint6)();
void (*pfprint6)(const char*, ...); // { dg-error "conflicting types" }
void (*pfprint7)(const char*, ...);
FMT (1, 2) void (*pfprint7)(); // { dg-error "conflicting types" }
// Exercise calls via function pointers.
void test_pfprint (void)
{
pfprint1 ("%i %s", 123, "");
pfprint1 ("%s %i", 123, 123); // { dg-warning "\\\[-Wformat" }
pfprint2 (0, "%s %i", "", 123);
pfprint2 (1, "%i %s", "", 123); // { dg-warning "\\\[-Wformat" }
pfprint3 (0, 1, "%s %i", "", 123);
pfprint3 (1, 2, "%i %s", "", 123); // { dg-warning "\\\[-Wformat" }
// Just verify there's no ICE.
pfprint4 ();
pfprint5 ();
pfprint6 ("%i %s", 123, "");
}
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