mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-25 15:26:07 +00:00
aee4925507
Based on post-commit review discussion on 2bd84938470bf2e337801faafb8a67710f46429d with Richard Smith. Other uses of forcing HasEmptyPlaceHolder to false seem OK to me - they're all around pointer/reference types where the pointer/reference token will appear at the rightmost side of the left side of the type name, so they make nested types (eg: the "int" in "int *") behave as though there is a non-empty placeholder (because the "*" is essentially the placeholder as far as the "int" is concerned). This was originally committed in 277623f4d5a672d707390e2c3eaf30a9eb4b075c Reverted in f9ad1d1c775a8e264bebc15d75e0c6e5c20eefc7 due to breakages outside of clang - lldb seems to have some strange/strong dependence on "char [N]" versus "char[N]" when printing strings (not due to that name appearing in DWARF, but probably due to using clang to stringify type names) that'll need to be addressed, plus a few other odds and ends in other subprojects (clang-tools-extra, compiler-rt, etc).
19 lines
848 B
C
19 lines
848 B
C
// RUN: %clang_cc1 -fsyntax-only -verify %s
|
|
|
|
void f(int x) {
|
|
char foo[10];
|
|
int bar[20];
|
|
char qux[30];
|
|
|
|
(void)sizeof(bar + 10); // expected-warning{{sizeof on pointer operation will return size of 'int *' instead of 'int[20]'}}
|
|
(void)sizeof(foo - 20); // expected-warning{{sizeof on pointer operation will return size of 'char *' instead of 'char[10]'}}
|
|
(void)sizeof(bar - x); // expected-warning{{sizeof on pointer operation will return size of 'int *' instead of 'int[20]'}}
|
|
(void)sizeof(foo + x); // expected-warning{{sizeof on pointer operation will return size of 'char *' instead of 'char[10]'}}
|
|
|
|
// This is ptrdiff_t.
|
|
(void)sizeof(foo - qux); // no-warning
|
|
|
|
(void)sizeof(foo, x); // no-warning
|
|
(void)sizeof(x, foo); // expected-warning{{sizeof on pointer operation will return size of 'char *' instead of 'char[10]'}}
|
|
}
|