From: David Malcolm Date: Thu, 16 Aug 2018 22:33:00 +0000 (+0000) Subject: diagnostics: fix bad interaction between line spans and line numbers X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5c6a2bf2720fd6412a2d63a3a82da5af0c18f824;p=gcc.git diagnostics: fix bad interaction between line spans and line numbers Without this patch, the "line span" markers and the line numbering interacted badly, leading to stray copies of the line-span markers appearing as prefixes on the first source line in a span: missing-header-fixit-3.c: In function 'test': missing-header-fixit-3.c:9:3: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration] 9 | printf ("%i of %i\n", i, j); | ^~~~~~ missing-header-fixit-3.c:9:3: warning: incompatible implicit declaration of built-in function 'printf' missing-header-fixit-3.c:9:3: note: include '' or provide a declaration of 'printf' missing-header-fixit-3.c:1:1: |+#include missing-header-fixit-3.c:1:1:1 | /* Example of a fix-it hint that adds a #include directive, missing-header-fixit-3.c:9:3: missing-header-fixit-3.c:9:3:9 | printf ("%i of %i\n", i, j); | ^~~~~~ With this patch, we now correctly print: missing-header-fixit-3.c: In function 'test': missing-header-fixit-3.c:9:3: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration] 9 | printf ("%i of %i\n", i, j); | ^~~~~~ missing-header-fixit-3.c:9:3: warning: incompatible implicit declaration of built-in function 'printf' missing-header-fixit-3.c:9:3: note: include '' or provide a declaration of 'printf' missing-header-fixit-3.c:1:1: + |+#include 1 | /* Example of a fix-it hint that adds a #include directive, missing-header-fixit-3.c:9:3: 9 | printf ("%i of %i\n", i, j); | ^~~~~~ gcc/ChangeLog: * diagnostic.c (default_diagnostic_start_span_fn): Call pp_string to emit the span, rather than setting it as the prefix. gcc/testsuite/ChangeLog: * gcc.dg/missing-header-fixit-3.c: New test. From-SVN: r263606 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c776f6dc952..146e4e37c3a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2018-08-16 David Malcolm + + * diagnostic.c (default_diagnostic_start_span_fn): Call pp_string + to emit the span, rather than setting it as the prefix. + 2018-08-16 David Malcolm * diagnostic-show-locus.c (layout::start_annotation_line): Add diff --git a/gcc/diagnostic.c b/gcc/diagnostic.c index 59477ce93f6..7e8bcf52dc1 100644 --- a/gcc/diagnostic.c +++ b/gcc/diagnostic.c @@ -629,9 +629,9 @@ void default_diagnostic_start_span_fn (diagnostic_context *context, expanded_location exploc) { - pp_set_prefix (context->printer, - diagnostic_get_location_text (context, exploc)); - pp_string (context->printer, ""); + char *text = diagnostic_get_location_text (context, exploc); + pp_string (context->printer, text); + free (text); pp_newline (context->printer); } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 978bd8f8223..ad2de8468ec 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2018-08-16 David Malcolm + + * gcc.dg/missing-header-fixit-3.c: New test. + 2018-08-16 David Malcolm * gcc.dg/plugin/diagnostic-test-show-locus-bw-line-numbers.c diff --git a/gcc/testsuite/gcc.dg/missing-header-fixit-3.c b/gcc/testsuite/gcc.dg/missing-header-fixit-3.c new file mode 100644 index 00000000000..8f2fb5b044a --- /dev/null +++ b/gcc/testsuite/gcc.dg/missing-header-fixit-3.c @@ -0,0 +1,27 @@ +/* Example of a fix-it hint that adds a #include directive, + adding them to the top of the file, given that there is no + pre-existing #include. */ + +/* { dg-options "-fdiagnostics-show-caret -fdiagnostics-show-line-numbers" } */ + +void test (int i, int j) +{ + printf ("%i of %i\n", i, j); /* { dg-warning "implicit declaration" } */ + /* { dg-message "include '' or provide a declaration of 'printf'" "" { target *-*-* } .-1 } */ +#if 0 +/* { dg-begin-multiline-output "" } +9 | printf ("%i of %i\n", i, j); + | ^~~~~~ + { dg-end-multiline-output "" } */ +/* { dg-regexp ".*missing-header-fixit-3.c:1:1:" } */ +/* { dg-begin-multiline-output "" } ++ |+#include +1 | /* Example of a fix-it hint that adds a #include directive, + { dg-end-multiline-output "" } */ +/* { dg-regexp ".*missing-header-fixit-3.c:9:3:" } */ +/* { dg-begin-multiline-output "" } +9 | printf ("%i of %i\n", i, j); + | ^~~~~~ + { dg-end-multiline-output "" } */ +#endif +}