From 51ad8481b8fe3d47aaa4494deace6153c353dec1 Mon Sep 17 00:00:00 2001 From: Martin Sebor Date: Tue, 13 Aug 2019 15:55:40 +0000 Subject: [PATCH] PR c/80619 - bad fix-it hint for GCC %lu directive with int argument: %wu gcc/c-family/ChangeLog: PR c/80619 * c-format.c (printf_length_specs): Set FMT_LEN_w for "w". (asm_fprintf_length_spec): Same. * c-format.h (format_lengths): Add FMT_LEN_w. gcc/testsuite/ChangeLog: PR c/80619 * gcc.dg/format/pr80619.c: New test. From-SVN: r274385 --- gcc/c-family/ChangeLog | 7 +++ gcc/c-family/c-format.c | 4 +- gcc/c-family/c-format.h | 1 + gcc/testsuite/ChangeLog | 5 ++ gcc/testsuite/gcc.dg/format/pr80619.c | 89 +++++++++++++++++++++++++++++++++++ 5 files changed, 104 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/format/pr80619.c diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog index 507e536..cd7cccb 100644 --- a/gcc/c-family/ChangeLog +++ b/gcc/c-family/ChangeLog @@ -1,3 +1,10 @@ +2019-08-13 Martin Sebor + + PR c/80619 + * c-format.c (printf_length_specs): Set FMT_LEN_w for "w". + (asm_fprintf_length_spec): Same. + * c-format.h (format_lengths): Add FMT_LEN_w. + 2019-08-10 Jakub Jelinek * c-pragma.h (enum pragma_omp_clause): Add diff --git a/gcc/c-family/c-format.c b/gcc/c-family/c-format.c index d134116..6b05996 100644 --- a/gcc/c-family/c-format.c +++ b/gcc/c-family/c-format.c @@ -497,7 +497,7 @@ static const format_length_info printf_length_specs[] = static const format_length_info asm_fprintf_length_specs[] = { { "l", FMT_LEN_l, STD_C89, "ll", FMT_LEN_ll, STD_C89, 0 }, - { "w", FMT_LEN_none, STD_C89, NO_FMT, 0 }, + { "w", FMT_LEN_w, STD_C89, NO_FMT, 0 }, { NO_FMT, NO_FMT, 0 } }; @@ -505,7 +505,7 @@ static const format_length_info asm_fprintf_length_specs[] = static const format_length_info gcc_diag_length_specs[] = { { "l", FMT_LEN_l, STD_C89, "ll", FMT_LEN_ll, STD_C89, 0 }, - { "w", FMT_LEN_none, STD_C89, NO_FMT, 0 }, + { "w", FMT_LEN_w, STD_C89, NO_FMT, 0 }, { NO_FMT, NO_FMT, 0 } }; diff --git a/gcc/c-family/c-format.h b/gcc/c-family/c-format.h index 972ba46..6aa68df 100644 --- a/gcc/c-family/c-format.h +++ b/gcc/c-family/c-format.h @@ -36,6 +36,7 @@ enum format_lengths FMT_LEN_H, FMT_LEN_D, FMT_LEN_DD, + FMT_LEN_w, /* GCC's HOST_WIDE_INT. */ FMT_LEN_MAX }; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b881498..d577f7e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2019-08-13 Martin Sebor + + PR c/80619 + * gcc.dg/format/pr80619.c: New test. + 2019-08-13 Marek Polacek PR c++/90473 - wrong code with nullptr in default argument. diff --git a/gcc/testsuite/gcc.dg/format/pr80619.c b/gcc/testsuite/gcc.dg/format/pr80619.c new file mode 100644 index 0000000..c9f0496 --- /dev/null +++ b/gcc/testsuite/gcc.dg/format/pr80619.c @@ -0,0 +1,89 @@ +/* PR c/80619 - bad fix-it hint for GCC %lu directive with int argument: %wu + { dg-do compile } + { dg-options "-Wall -fdiagnostics-show-caret" } */ + +void T (const char*, ...) __attribute__ ((format (__gcc_diag__, 1, 2))); + +void test_suggested_modifier (void) +{ + T ("%ld", 0); // { dg-warning "format '%ld' expects argument of type 'long int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%ld", 0); + ~~^ ~ + | | + | int + long int + %d + { dg-end-multiline-output "" } */ + + T ("%li", 0); // { dg-warning "format '%li' expects argument of type 'long int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%li", 0); + ~~^ ~ + | | + | int + long int + %i + { dg-end-multiline-output "" } */ + + T ("%lu", 0); // { dg-warning "format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%lu", 0); + ~~^ ~ + | | + | int + long unsigned int + %u + { dg-end-multiline-output "" } */ + + T ("%lx", 0); // { dg-warning "format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%lx", 0); + ~~^ ~ + | | + | int + long unsigned int + %x + { dg-end-multiline-output "" } */ + + T ("%lli", 0); // { dg-warning "format '%lli' expects argument of type 'long long int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%lli", 0); + ~~~^ ~ + | | + | int + long long int + %i + { dg-end-multiline-output "" } */ + + T ("%llo", 0); // { dg-warning "format '%llo' expects argument of type 'long long unsigned int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%llo", 0); + ~~~^ ~ + | | + | int + long long unsigned int + %o + { dg-end-multiline-output "" } */ + + T ("%llu", 0); // { dg-warning "format '%llu' expects argument of type 'long long unsigned int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%llu", 0); + ~~~^ ~ + | | + | int + long long unsigned int + %u + { dg-end-multiline-output "" } */ + + T ("%llx", 0); // { dg-warning "format '%llx' expects argument of type 'long long unsigned int', but argument 2 has type 'int'" } + /* { dg-begin-multiline-output "" } + T ("%llx", 0); + ~~~^ ~ + | | + | int + long long unsigned int + %x + { dg-end-multiline-output "" } */ +} + -- 2.7.4