66e5825973
Consider this bogus code (from g++.dg/diagnostic/param-type-mismatch-2.C):
struct s4 { static int member_1 (int one, const char **two, float three); };
int test_4 (int first, const char *second, float third)
{
return s4::member_1 (first, second, third);
}
Before this patch, g++ emits:
demo.cc: In function 'int test_4(int, const char*, float)':
demo.cc:5:44: error: no matching function for call to 's4::member_1(int&, const char*&, float&)'
5 | return s4::member_1 (first, second, third);
| ^
demo.cc:1:24: note: candidate: 'static int s4::member_1(int, const char**, float)'
1 | struct s4 { static int member_1 (int one, const char **two, float three); };
| ^~~~~~~~
demo.cc:1:24: note: no known conversion for argument 2 from 'const char*' to 'const char**'
With this patch, it highlights the pertinent parameter in the
"no known conversion" note:
demo.cc: In function 'int test_4(int, const char*, float)':
demo.cc:5:44: error: no matching function for call to 's4::member_1(int&, const char*&, float&)'
5 | return s4::member_1 (first, second, third);
| ^
demo.cc:1:24: note: candidate: 'static int s4::member_1(int, const char**, float)'
1 | struct s4 { static int member_1 (int one, const char **two, float three); };
| ^~~~~~~~
demo.cc:1:56: note: no known conversion for argument 2 from 'const char*' to 'const char**'
1 | struct s4 { static int member_1 (int one, const char **two, float three); };
| ~~~~~~~~~~~~~^~~
gcc/cp/ChangeLog:
PR c++/85110
* call.c (print_conversion_rejection): Add "fn" param and use it
for "no known conversion" messages to underline the pertinent
param.
(print_z_candidate): Supply "fn" to the new param above.
gcc/testsuite/ChangeLog:
PR c++/85110
* g++.dg/diagnostic/param-type-mismatch-2.C: Update expected
output to reflect underlining of pertinent parameter in decl
for "no known conversion" messages.
From-SVN: r263957
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