https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110930
Bug ID: 110930
Summary: Fix-it hints suggest wrong header for names in the
global namespace
Product: gcc
Version: 13.1.1
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
Given:
uint32_t i = 0;
We say:
dcl.cc:1:1: error: 'uint32_t' does not name a type
1 | uint32_t i = 0;
| ^~~~~~~~
dcl.cc:1:1: note: 'uint32_t' is defined in header '<cstdint>'; this is probably
fixable by adding '#include <cstdint>'
+++ |+#include <cstdint>
1 | uint32_t i = 0;
But this is wrong. uint32_t is declared in <stdint.h>, std::uint32_t is
declared in <cstdint>.
We should not be encouraging reliance on the non-portable property that some
implementations of <cstdint> leak the name into the global namespace as well as
namespace std.
This is the case for every name in the C++ stdlib that comes from the C stdlib.
