c++: Fix source_location inconsistency between calls from templates and non-templates [PR99672]

The srcloc19.C testcase shows inconsistency in
std::source_location::current() locations between calls from
templates and non-templates.  The location used by __builtin_source_location
comes in both cases from input_location which is set on it by bot_manip
when handling the default argument, called during finish_call_expr.
The problem is that in templates that input_location comes from the
CALL_EXPR we built earlier and that has the combined locus with
range between first character of the function name and closing paren
with caret on the opening paren, so something printed as caret as:
foobar ();
~~~~~~^~
But outside of templates, finish_call_expr is called when input_location
is just the closing paren token, i.e.
foobar ();
        ^
and only after that returns we create the combined location and set
the CALL_EXPR location to that.  So, it means std::source_location::current()
reports in templates the column of opening (, while outside of templates
closing ).

The following patch makes it consistent by creating the combined location
already before calling finish_call_expr and temporarily overriding
input_location to that.

2021-03-25  Jakub Jelinek  <jakub@redhat.com>

	PR c++/99672
	* parser.c (cp_parser_postfix_expression): For calls, create
	combined_loc and temporarily set input_location to it before
	calling finish_call_expr.

	* g++.dg/concepts/diagnostic2.C: Adjust expected caret line.
	* g++.dg/cpp1y/builtin_location.C (f4, n6): Move #line directives
	to match locus changes.
	* g++.dg/cpp2a/srcloc1.C: Adjust expected column numbers.
	* g++.dg/cpp2a/srcloc2.C: Likewise.
	* g++.dg/cpp2a/srcloc15.C: Likewise.
	* g++.dg/cpp2a/srcloc16.C: Likewise.
	* g++.dg/cpp2a/srcloc19.C: New test.
	* g++.dg/modules/adhoc-1_b.C: Adjust expected column numbers
	and caret line.
	* g++.dg/modules/macloc-1_c.C: Adjust expected column numbers.
	* g++.dg/modules/macloc-1_d.C: Likewise.
	* g++.dg/plugin/diagnostic-test-expressions-1.C: Adjust expected
	caret line.

	* testsuite/18_support/source_location/consteval.cc (main): Adjust
	expected column numbers.
	* testsuite/18_support/source_location/1.cc (main): Likewise.

14 files changed, 96 insertions, 45 deletions

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index ced4bd5..d0477c4 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -7564,6 +7564,7 @@ cp_parser_postfix_expression (cp_parser *parser, bool address_p, bool cast_p,
 	    tsubst_flags_t complain = complain_flags (decltype_p);
 	    vec<tree, va_gc> *args;
 	    location_t close_paren_loc = UNKNOWN_LOCATION;
+	    location_t combined_loc = UNKNOWN_LOCATION;
 
             is_member_access = false;
 
@@ -7669,6 +7670,17 @@ cp_parser_postfix_expression (cp_parser *parser, bool address_p, bool cast_p,
 		  }
 	      }
 
+	    /* Temporarily set input_location to the combined location
+	       with call expression range, as e.g. build_out_target_exprs
+	       called from convert_default_arg relies on input_location,
+	       so updating it only when the call is fully built results
+	       in inconsistencies between location handling in templates
+	       and outside of templates.  */
+	    if (close_paren_loc != UNKNOWN_LOCATION)
+	      combined_loc = make_location (token->location, start_loc,
+					    close_paren_loc);
+	    iloc_sentinel ils (combined_loc);
+
 	    if (TREE_CODE (postfix_expression) == COMPONENT_REF)
 	      {
 		tree instance = TREE_OPERAND (postfix_expression, 0);
@@ -7726,12 +7738,7 @@ cp_parser_postfix_expression (cp_parser *parser, bool address_p, bool cast_p,
 				    complain);
 
 	    if (close_paren_loc != UNKNOWN_LOCATION)
-	      {
-		location_t combined_loc = make_location (token->location,
-							 start_loc,
-							 close_paren_loc);
-		postfix_expression.set_location (combined_loc);
-	      }
+	      postfix_expression.set_location (combined_loc);
 
 	    /* The POSTFIX_EXPRESSION is certainly no longer an id.  */
 	    idk = CP_ID_KIND_NONE;
diff --git a/gcc/testsuite/g++.dg/concepts/diagnostic2.C b/gcc/testsuite/g++.dg/concepts/diagnostic2.C
index 004c7a3..6550ed6 100644
--- a/gcc/testsuite/g++.dg/concepts/diagnostic2.C
+++ b/gcc/testsuite/g++.dg/concepts/diagnostic2.C
@@ -25,6 +25,6 @@ baz()
   bar<int>(); // { dg-error "no match" }
 /* { dg-begin-multiline-output "" }
    bar<int>();
-            ^
+   ~~~~~~~~^~
    { dg-end-multiline-output "" } */
 }
diff --git a/gcc/testsuite/g++.dg/cpp1y/builtin_location.C b/gcc/testsuite/g++.dg/cpp1y/builtin_location.C
index b3b9b43..1f8a7fd 100644
--- a/gcc/testsuite/g++.dg/cpp1y/builtin_location.C
+++ b/gcc/testsuite/g++.dg/cpp1y/builtin_location.C
@@ -103,10 +103,10 @@ A (0 == __builtin_strcmp (f3, FILE_3));
 #define FILE_4 "next_file_name.another_suffix"
 #line 1 "foobar"
 constexpr const char* f4 = this_file
-  (
 #line 1 FILE_4
-   )
+  (
 #line 1 "foobar"
+   )
   ;
 A (0 == __builtin_strcmp (f4, FILE_4));
 
@@ -167,9 +167,9 @@ A (n5 == 9);
 // of the function call.
 #line 1
 constexpr int n6 = this_line
-  (
 #line 99
-   )
+  (
 #line 1
+   )
   ;
 A (n6 == 99);
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc1.C b/gcc/testsuite/g++.dg/cpp2a/srcloc1.C
index 029a037..2e97974 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc1.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc1.C
@@ -80,7 +80,7 @@ constexpr source_location s2 = baz <1> ();
 const source_location *p1 = &s1;
 const source_location *p2 = &s2;
 static_assert (source_location::current ().line () == __LINE__);
-static_assert (source_location::current ().column () == 42);
+static_assert (source_location::current ().column () == 41);
 
 constexpr bool
 quux ()
@@ -106,7 +106,7 @@ quux ()
     return false;
   if (line1 != line2)
     return false;
-  if (column != 33)
+  if (column != 32)
     return false;
   return true;
 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc15.C b/gcc/testsuite/g++.dg/cpp2a/srcloc15.C
index d02617e..3bb3958 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc15.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc15.C
@@ -69,8 +69,8 @@ bar ()
   source_location a = foo ();
   source_location b = source_location::current ();
   source_location c = foo ();
-  //                       ^ column 28
-  //                                            ^ column 49
+  //                      ^ column 27
+  //                                           ^ column 48
   const source_location *d[3] = { &a, &b, &c };
   const char *file1 = __FILE__;
   const char *function1 = __PRETTY_FUNCTION__;
@@ -83,7 +83,7 @@ bar ()
 	return false;
       if (d[j]->line () != line + j + 1)
 	return false;
-      if (d[j]->column () != (j == 1 ? 49 : 28))
+      if (d[j]->column () != (j == 1 ? 48 : 27))
 	return false;
     }
 
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc16.C b/gcc/testsuite/g++.dg/cpp2a/srcloc16.C
index c8bd281..0ecd636 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc16.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc16.C
@@ -79,10 +79,10 @@ foo ()
       || u.u.line () + 1 != v.line ()
       || s.a.column () != 18
       || s.b.column () != 18
-      || s.c.column () != 50
+      || s.c.column () != 49
       || t.u.column () != 21
       || u.u.column () != 13
-      || v.column () != 49)
+      || v.column () != 48)
     return false;
   return true;
 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc19.C b/gcc/testsuite/g++.dg/cpp2a/srcloc19.C
new file mode 100644
index 0000000..b7e8c37
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc19.C
@@ -0,0 +1,44 @@
+// PR c++/99672
+// { dg-do compile { target c++20 } }
+
+namespace std {
+  struct source_location {
+    struct __impl {
+      const char *_M_file_name;
+      const char *_M_function_name;
+      unsigned int _M_line, _M_column;
+    };
+    const __impl *__ptr;
+    constexpr source_location () : __ptr (nullptr) {}
+    static consteval source_location
+    current (const void *__p = __builtin_source_location ()) {
+      source_location __ret;
+      __ret.__ptr = static_cast <const __impl *> (__p);
+      return __ret;
+    }
+    constexpr const char *file_name () const {
+      return __ptr ? __ptr->_M_file_name : "";
+    }
+    constexpr const char *function_name () const {
+      return __ptr ? __ptr->_M_function_name : "";
+    }
+    constexpr unsigned line () const {
+      return __ptr ? __ptr->_M_line : 0;
+    }
+    constexpr unsigned column () const {
+      return __ptr ? __ptr->_M_column : 0;
+    }
+  };
+}
+
+constexpr int g(auto...) {
+return std::source_location::current().column();
+}
+
+constexpr int f() {
+return std::source_location::current().column();
+}
+
+constexpr int a = g();
+constexpr int b = f();
+static_assert (a == b);
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc2.C b/gcc/testsuite/g++.dg/cpp2a/srcloc2.C
index 4e0b960..3f91a64 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc2.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc2.C
@@ -84,7 +84,7 @@ const source_location *p1 = &s1;
 const source_location *p2 = &s2;
 
 static_assert (source_location::current ().line () == __LINE__);
-static_assert (source_location::current ().column () == 42);
+static_assert (source_location::current ().column () == 41);
 
 constexpr bool
 quux ()
@@ -110,7 +110,7 @@ quux ()
     return false;
   if (line1 != line2)
     return false;
-  if (column != 33)
+  if (column != 32)
     return false;
   return true;
 }
diff --git a/gcc/testsuite/g++.dg/modules/adhoc-1_b.C b/gcc/testsuite/g++.dg/modules/adhoc-1_b.C
index 59907a0..7fd5701 100644
--- a/gcc/testsuite/g++.dg/modules/adhoc-1_b.C
+++ b/gcc/testsuite/g++.dg/modules/adhoc-1_b.C
@@ -6,7 +6,7 @@ void foo ()
   massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea ();
 }
 
-// { dg-regexp "\n\[^\n]*adhoc-1_b.C:6:74: error: no matching function for call to 'massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea\\(\\)'\n   massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea \\(\\);\n                                                                          \\^$" }
+// { dg-regexp "\n\[^\n]*adhoc-1_b.C:6:73: error: no matching function for call to 'massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea\\(\\)'\n   massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea \\(\\);\n   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\\^~$" }
 // { dg-regexp "\nIn module bob, imported at \[^\n]*adhoc-1_b.C:3:\n\[^\n]*adhoc-1_a.C:5:12: note: candidate: 'int massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea@bob\\(int\\)'\n export int massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea \\(int\\);\n            \\^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~$" }
 // { dg-regexp "\nIn module bob, imported at \[^\n]*adhoc-1_b.C:3:\n\[^\n]*adhoc-1_a.C:6:188: note: candidate: 'void massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea@bob\\(float\\)'\n\[ \t]*export void massivelongnamethatcausesadhoclocationsokeepaddingcharsyourgettheidea \\(float\\);\n\[ \t]*\\^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~?$" }
 // For some reason dg-regexp inserts a blank line 
diff --git a/gcc/testsuite/g++.dg/modules/macloc-1_c.C b/gcc/testsuite/g++.dg/modules/macloc-1_c.C
index 9b8f7fb..5865a34 100644
--- a/gcc/testsuite/g++.dg/modules/macloc-1_c.C
+++ b/gcc/testsuite/g++.dg/modules/macloc-1_c.C
@@ -8,6 +8,6 @@ void gru ()
   you (1);
 }
 
-// { dg-regexp "\[^\n]*macloc-1_c.C:7:8: error: too many arguments to function 'int me@agnes\\(\\)'\nIn module agnes, imported at \[^\n]*macloc-1_b.C:8,\nof module edith, imported at \[^\n]*macloc-1_c.C:3:\n\[^\n]*macloc-1_a.C:11:12: note: declared here\n\[^\n]*macloc-1_a.C:8:20: note: in definition of macro 'BOB'\n" }
+// { dg-regexp "\[^\n]*macloc-1_c.C:7:6: error: too many arguments to function 'int me@agnes\\(\\)'\nIn module agnes, imported at \[^\n]*macloc-1_b.C:8,\nof module edith, imported at \[^\n]*macloc-1_c.C:3:\n\[^\n]*macloc-1_a.C:11:12: note: declared here\n\[^\n]*macloc-1_a.C:8:20: note: in definition of macro 'BOB'\n" }
 
-// { dg-regexp "\[^\n]*macloc-1_c.C:8:9: error: too many arguments to function 'int you@agnes\\(\\)'\nIn module agnes, imported at \[^\n]*macloc-1_b.C:8,\nof module edith, imported at \[^\n]*macloc-1_c.C:3:\n\[^\n]*macloc-1_a.C:12:14: note: declared here\n\[^\n]*macloc-1_a.C:9:22: note: in definition of macro 'KEVIN'\n" }
+// { dg-regexp "\[^\n]*macloc-1_c.C:8:7: error: too many arguments to function 'int you@agnes\\(\\)'\nIn module agnes, imported at \[^\n]*macloc-1_b.C:8,\nof module edith, imported at \[^\n]*macloc-1_c.C:3:\n\[^\n]*macloc-1_a.C:12:14: note: declared here\n\[^\n]*macloc-1_a.C:9:22: note: in definition of macro 'KEVIN'\n" }
diff --git a/gcc/testsuite/g++.dg/modules/macloc-1_d.C b/gcc/testsuite/g++.dg/modules/macloc-1_d.C
index 5b2b7ba..282a31c 100644
--- a/gcc/testsuite/g++.dg/modules/macloc-1_d.C
+++ b/gcc/testsuite/g++.dg/modules/macloc-1_d.C
@@ -9,5 +9,5 @@ void margo ()
   gru (2);
 }
 
-// { dg-regexp "\[^\n]*macloc-1_d.C:8:8: error: too many arguments to function 'int me@agnes\\(\\)'\nIn module agnes, imported at \[^\n]*macloc-1_d.C:4:\n\[^\n]*macloc-1_a.C:11:12: note: declared here\n\[^\n]*macloc-1_a.C:8:20: note: in definition of macro 'BOB'\n" }
-// { dg-regexp "\[^\n]*macloc-1_d.C:9:9: error: too many arguments to function 'void gru@edith\\(\\)'\nIn module edith, imported at \[^\n]*macloc-1_d.C:3:\n\[^\n]*macloc-1_b.C:10:20: note: declared here\n\[^\n]*macloc-1_b.C:6:19: note: in definition of macro 'STUART'\n" }
+// { dg-regexp "\[^\n]*macloc-1_d.C:8:6: error: too many arguments to function 'int me@agnes\\(\\)'\nIn module agnes, imported at \[^\n]*macloc-1_d.C:4:\n\[^\n]*macloc-1_a.C:11:12: note: declared here\n\[^\n]*macloc-1_a.C:8:20: note: in definition of macro 'BOB'\n" }
+// { dg-regexp "\[^\n]*macloc-1_d.C:9:7: error: too many arguments to function 'void gru@edith\\(\\)'\nIn module edith, imported at \[^\n]*macloc-1_d.C:3:\n\[^\n]*macloc-1_b.C:10:20: note: declared here\n\[^\n]*macloc-1_b.C:6:19: note: in definition of macro 'STUART'\n" }
diff --git a/gcc/testsuite/g++.dg/plugin/diagnostic-test-expressions-1.C b/gcc/testsuite/g++.dg/plugin/diagnostic-test-expressions-1.C
index 288da2c..70778e9 100644
--- a/gcc/testsuite/g++.dg/plugin/diagnostic-test-expressions-1.C
+++ b/gcc/testsuite/g++.dg/plugin/diagnostic-test-expressions-1.C
@@ -900,7 +900,7 @@ void test_methods ()
   ((base *)1)->priv (); // { dg-error " is private " }
 /* { dg-begin-multiline-output "" }
    ((base *)1)->priv ();
-                      ^
+   ~~~~~~~~~~~~~~~~~~^~
    { dg-end-multiline-output "" }
    { dg-begin-multiline-output "" }
    int priv ();
diff --git a/libstdc++-v3/testsuite/18_support/source_location/1.cc b/libstdc++-v3/testsuite/18_support/source_location/1.cc
index 83430d4..687047a 100644
--- a/libstdc++-v3/testsuite/18_support/source_location/1.cc
+++ b/libstdc++-v3/testsuite/18_support/source_location/1.cc
@@ -87,37 +87,37 @@ int main ()
   std::string_view main_sl_fn_name(main_sl.function_name());
   std::string_view main_sl_fi_name(main_sl.file_name());
   VERIFY(main_sl.line() == main_sl_line);
-  // closing paren of call
-  VERIFY(main_sl.column() == 64);
+  // opening paren of call
+  VERIFY(main_sl.column() == 63);
   VERIFY(main_sl_fn_name.ends_with("main()"sv));
   VERIFY(main_sl_fi_name.ends_with("1.cc"sv));
 
   std::string_view f_arg_sl_fn_name(f_arg_sl.function_name());
   std::string_view f_arg_sl_fi_name(f_arg_sl.file_name());
   VERIFY(f_arg_sl.line() == f_arg_sl_line);
-  // closing paren of call
-  VERIFY(f_arg_sl.column() == 64);
+  // opening paren of call
+  VERIFY(f_arg_sl.column() == 63);
   VERIFY(f_arg_sl_fn_name.ends_with("main()"sv));
   VERIFY(f_arg_sl_fi_name.ends_with("1.cc"sv));
 
   std::string_view g_sl_fn_name(g_sl.function_name());
   std::string_view g_sl_fi_name(g_sl.file_name());
   VERIFY(g_sl.line() == g_sl_line);
-  VERIFY(g_sl.column() == 58); // closing paren of call
+  VERIFY(g_sl.column() == 57); // opening paren of call
   VERIFY(g_sl_fn_name.ends_with("g()"sv));
   VERIFY(g_sl_fi_name.ends_with("1.cc"sv));
 
   std::string_view h_sl_fn_name(h_sl.function_name());
   std::string_view h_sl_fi_name(h_sl.file_name());
   VERIFY(h_sl.line() == 23);
-  VERIFY(h_sl.column() == 58); // closing paren of call
+  VERIFY(h_sl.column() == 57); // opening paren of call
   VERIFY(h_sl_fn_name.ends_with("h()"sv));
   VERIFY(h_sl_fi_name.ends_with("srcloc.h"sv));
 
   std::string_view member_main_sl_fn_name(member_main_sl.member.function_name());
   std::string_view member_main_sl_fi_name(member_main_sl.member.file_name());
   VERIFY(member_main_sl.member.line() == main_sl_line);
-  VERIFY(member_main_sl.member.column() == 64);
+  VERIFY(member_main_sl.member.column() == 63);
   VERIFY(member_main_sl_fn_name.ends_with("main()"sv));
   VERIFY(member_main_sl_fi_name.ends_with("1.cc"sv));
 
@@ -144,8 +144,8 @@ int main ()
   std::string_view f_sl_fi_name(f_sl.file_name());
   std::string_view f_sl_fn_name(f_sl.function_name());
   VERIFY(f_sl.line() == f_sl_line);
-  // closing paren of call
-  VERIFY(f_sl.column() == 33);
+  // opening paren of call
+  VERIFY(f_sl.column() == 32);
   VERIFY(f_sl_fn_name.ends_with("main()"sv));
   VERIFY(f_sl_fi_name.ends_with("1.cc"sv));
 
diff --git a/libstdc++-v3/testsuite/18_support/source_location/consteval.cc b/libstdc++-v3/testsuite/18_support/source_location/consteval.cc
index 85bc9c2..62e0469d 100644
--- a/libstdc++-v3/testsuite/18_support/source_location/consteval.cc
+++ b/libstdc++-v3/testsuite/18_support/source_location/consteval.cc
@@ -75,43 +75,43 @@ int main ()
   using namespace std::string_view_literals;
 
   static_assert (std::source_location::current ().line () == __LINE__);
-  static_assert (std::source_location::current ().column () == 49);
+  static_assert (std::source_location::current ().column () == 48);
 
 
   constexpr std::string_view main_sl_fn_name(main_sl.function_name());
   constexpr std::string_view main_sl_fi_name(main_sl.file_name());
   static_assert(main_sl.line() == main_sl_line);
-  // closing paren of call
-  static_assert(main_sl.column() == 74);
+  // opening paren of call
+  static_assert(main_sl.column() == 73);
   static_assert(main_sl_fn_name.ends_with("main()"sv));
   static_assert(main_sl_fi_name.ends_with("consteval.cc"sv));
 
   constexpr std::string_view f_arg_sl_fn_name(f_arg_sl.function_name());
   constexpr std::string_view f_arg_sl_fi_name(f_arg_sl.file_name());
   static_assert(f_arg_sl.line() == f_arg_sl_line);
-  // closing paren of call
-  static_assert(f_arg_sl.column() == 74);
+  // opening paren of call
+  static_assert(f_arg_sl.column() == 73);
   static_assert(f_arg_sl_fn_name.ends_with("main()"sv));
   static_assert(f_arg_sl_fi_name.ends_with("consteval.cc"sv));
 
   constexpr std::string_view g_sl_fn_name(g_sl.function_name());
   constexpr std::string_view g_sl_fi_name(g_sl.file_name());
   static_assert(g_sl.line() == g_sl_line);
-  static_assert(g_sl.column() == 58); // closing paren of call
+  static_assert(g_sl.column() == 57); // opening paren of call
   static_assert(g_sl_fn_name.ends_with("g()"sv));
   static_assert(g_sl_fi_name.ends_with("consteval.cc"sv));
 
   constexpr std::string_view h_sl_fn_name(h_sl.function_name());
   constexpr std::string_view h_sl_fi_name(h_sl.file_name());
   static_assert(h_sl.line() == 23);
-  static_assert(h_sl.column() == 58); // closing paren of call
+  static_assert(h_sl.column() == 57); // opening paren of call
   static_assert(h_sl_fn_name.ends_with("h()"sv));
   static_assert(h_sl_fi_name.ends_with("srcloc.h"sv));
 
   constexpr std::string_view member_main_sl_fn_name(member_main_sl.member.function_name());
   constexpr std::string_view member_main_sl_fi_name(member_main_sl.member.file_name());
   static_assert(member_main_sl.member.line() == main_sl_line);
-  static_assert(member_main_sl.member.column() == 74);
+  static_assert(member_main_sl.member.column() == 73);
   static_assert(member_main_sl_fn_name.ends_with("main()"sv));
   static_assert(member_main_sl_fi_name.ends_with("consteval.cc"sv));
 
@@ -138,8 +138,8 @@ int main ()
   constexpr std::string_view f_sl_fi_name(f_sl.file_name());
   constexpr std::string_view f_sl_fn_name(f_sl.function_name());
   static_assert(f_sl.line() == f_sl_line);
-  // closing paren of call
-  static_assert(f_sl.column() == 43);
+  // opening paren of call
+  static_assert(f_sl.column() == 42);
   static_assert(f_sl_fn_name.ends_with("main()"sv));
   static_assert(f_sl_fi_name.ends_with("consteval.cc"sv));