https://gcc.gnu.org/g:bd28244ec92b9aac082f822987818ff1e11b67fd
commit r15-6757-gbd28244ec92b9aac082f822987818ff1e11b67fd
Author: Jason Merrill <ja...@redhat.com>
Date: Mon Nov 25 18:02:30 2024 -0500
c++: improve some modules comments
gcc/cp/ChangeLog:
* error.cc (cxx_initialize_diagnostics): Improve comment.
* module.cc (modules): Improve comment.
(get_originating_module): Add function comment.
Diff:
---
gcc/cp/error.cc | 2 +-
gcc/cp/module.cc | 6 +++++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/gcc/cp/error.cc b/gcc/cp/error.cc
index cc4cc4a7eb46..615ae0d1b65a 100644
--- a/gcc/cp/error.cc
+++ b/gcc/cp/error.cc
@@ -285,7 +285,7 @@ cxx_initialize_diagnostics (diagnostic_context *context)
context->m_adjust_diagnostic_info = cp_adjust_diagnostic_info;
}
-/* Dump an '@module' name suffix for DECL, if any. */
+/* Dump an '@module' name suffix for DECL, if it's attached to an import. */
static void
dump_module_suffix (cxx_pretty_printer *pp, tree decl)
diff --git a/gcc/cp/module.cc b/gcc/cp/module.cc
index 0533a2bcf2c1..fec820603521 100644
--- a/gcc/cp/module.cc
+++ b/gcc/cp/module.cc
@@ -4076,7 +4076,8 @@ static unsigned lazy_hard_limit; /* Hard limit on open
modules. */
pass, but ICBW. */
#define LAZY_HEADROOM 15 /* File descriptor headroom. */
-/* Vector of module state. Indexed by OWNER. Has at least 2 slots. */
+/* Vector of module state. Indexed by OWNER. Index 0 is reserved for the
+ current TU; imports start at 1. */
static GTY(()) vec<module_state *, va_gc> *modules;
/* Hash of module state, findable by {name, parent}. */
@@ -19947,6 +19948,9 @@ get_originating_module (tree decl, bool for_mangle)
return mod;
}
+/* DECL is imported, return which module imported it.
+ If FLEXIBLE, return -1 if not found, otherwise checking ICE. */
+
unsigned
get_importing_module (tree decl, bool flexible)
{
