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| author | Neil Booth <neil@daikokuya.demon.co.uk> | 2001-10-23 18:14:31 +0000 |
|---|---|---|
| committer | Neil Booth <neil@gcc.gnu.org> | 2001-10-23 18:14:31 +0000 |
| commit | 6c36d76bf6521dd1cc09b8d7e379a02d138ffd53 (patch) | |
| tree | a86518d1f2373ba547d08bd0867d006b5db75f24 /gcc/c-decl.c | |
| parent | 28a8851e654560d565e7270812ea1b2e1c33b14d (diff) | |
| download | gcc-6c36d76bf6521dd1cc09b8d7e379a02d138ffd53.zip gcc-6c36d76bf6521dd1cc09b8d7e379a02d138ffd53.tar.gz gcc-6c36d76bf6521dd1cc09b8d7e379a02d138ffd53.tar.bz2 | |
c-common.c (warn_div_by_zero): New.
* c-common.c (warn_div_by_zero): New.
* c-common.h (warn_div_by_zero): New.
* c-decl.c (c_decode_option): Take it on the command line.
* c-typeck.c (build_binary_op): Warn about division by zero.
* doc/invoke.texi: Document the new command line option, fix
documentation of -Wmultichar.
* testsuite/gcc.dg/divbyzero.c: New tests.
* testsuite/gcc.dg/noncompile/20010524-1.c: Update.
From-SVN: r46439
Diffstat (limited to 'gcc/c-decl.c')
| -rw-r--r-- | gcc/c-decl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c index 45b923a..ad724f5 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -750,6 +750,10 @@ c_decode_option (argc, argv) warn_multichar = 1; else if (!strcmp (p, "-Wno-multichar")) warn_multichar = 0; + else if (!strcmp (p, "-Wdiv-by-zero")) + warn_div_by_zero = 1; + else if (!strcmp (p, "-Wno-div-by-zero")) + warn_div_by_zero = 0; else if (!strcmp (p, "-Wunknown-pragmas")) /* Set to greater than 1, so that even unknown pragmas in system headers will be warned about. */ |