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| author | Martin Sebor <msebor@redhat.com> | 2017-01-08 23:42:09 +0000 |
|---|---|---|
| committer | Martin Sebor <msebor@gcc.gnu.org> | 2017-01-08 16:42:09 -0700 |
| commit | efcc8d387f52f995a6e41bc78a76cc77e4bb6ee8 (patch) | |
| tree | f91cdc7136d16f3e039d0ea98daf535a9c7c6f30 /gcc/c-family | |
| parent | 1243c42d6457fd2b09917b5789c8c42dd13437ec (diff) | |
| download | gcc-efcc8d387f52f995a6e41bc78a76cc77e4bb6ee8.zip gcc-efcc8d387f52f995a6e41bc78a76cc77e4bb6ee8.tar.gz gcc-efcc8d387f52f995a6e41bc78a76cc77e4bb6ee8.tar.bz2 | |
PR tree-optimization/78913 - Probably misleading error reported by -Wformat-length
PR tree-optimization/78913 - Probably misleading error reported by -Wformat-length
PR middle-end/77708 - -Wformat-length %s warns for snprintf
gcc/ChangeLog:
PR middle-end/77708
* doc/invoke.texi (Warning Options): Document -Wformat-truncation.
* gimple-ssa-sprintf.c (call_info::reval_used, call_info::warnopt):
New member functions.
(format_directive): Used them.
(add_bytes): Same.
(pass_sprintf_length::handle_gimple_call): Same.
* graphite-sese-to-poly.c (tree_int_to_gmp): Increase buffer size
to avoid truncation for any argument.
(extract_affine_mul): Same.
* tree.c (get_file_function_name): Same.
gcc/c-family/ChangeLog:
PR middle-end/77708
* c.opt (-Wformat-truncation): New option.
gcc/fortran/ChangeLog:
PR tree-optimization/78913
PR middle-end/77708
* trans-common.c (build_equiv_decl): Increase buffer size to avoid
truncation for any argument.
* trans-types.c (gfc_build_logical_type): Same.
gcc/testsuite/ChangeLog:
PR middle-end/77708
* gcc.dg/tree-ssa/builtin-snprintf-warn-1.c: New test.
* gcc.dg/tree-ssa/builtin-snprintf-warn-2.c: New test.
* gcc.dg/tree-ssa/builtin-sprintf-warn-6.c: XFAIL test cases failing
due to bug 78969.
* gcc.dg/format/pr78569.c: Adjust.
From-SVN: r244210
Diffstat (limited to 'gcc/c-family')
| -rw-r--r-- | gcc/c-family/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/c-family/c.opt | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog index 375dad1..3bd2c7c 100644 --- a/gcc/c-family/ChangeLog +++ b/gcc/c-family/ChangeLog @@ -1,3 +1,8 @@ +2017-01-08 Martin Sebor <msebor@redhat.com> + + PR middle-end/77708 + * c.opt (-Wformat-truncation): New option. + 2017-01-06 Alexandre Oliva <aoliva@redhat.com> * c-pretty-print.c (pp_c_tree_decl_identifier): Convert 16-bit diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt index 0b74aba..8b2fc79 100644 --- a/gcc/c-family/c.opt +++ b/gcc/c-family/c.opt @@ -537,6 +537,11 @@ Wformat-signedness C ObjC C++ ObjC++ Var(warn_format_signedness) Warning Warn about sign differences with format functions. +Wformat-truncation +C ObjC C++ ObjC++ Warning Alias(Wformat-truncation=, 1, 0) +Warn about calls to snprintf and similar functions that truncate output. +Same as -Wformat-truncation=1. + Wformat-y2k C ObjC C++ ObjC++ Var(warn_format_y2k) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=,warn_format >= 2, 0) Warn about strftime formats yielding 2-digit years. @@ -554,6 +559,10 @@ C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format_length) Warning Warn about function calls with format strings that write past the end of the destination region. +Wformat-truncation= +C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format_trunc) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 1, 0) +Warn about calls to snprintf and similar functions that truncate output. + Wignored-qualifiers C C++ Var(warn_ignored_qualifiers) Warning EnabledBy(Wextra) Warn whenever type qualifiers are ignored. |