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gcc/analyzer/ChangeLog: PR analyzer/124217 * analyzer.opt (Wanalyzer-div-by-zero): New. * analyzer.opt.urls: Regenerate. * region-model.cc (class div_by_zero_diagnostic): New. (region_model::get_gassign_result): Add warning for division by zero if ctxt is non-null. Bail out on such cases even if ctxt is null. * svalue.cc (type_can_have_value_range_p): Also handle frange. gcc/ChangeLog: PR analyzer/124217 * doc/invoke.texi: Add -Wanalyzer-div-by-zero. gcc/testsuite/ChangeLog: PR analyzer/124217 * c-c++-common/analyzer/divide-by-zero-1.c: Update to expect -Wanalyzer-div-by-zero. * c-c++-common/analyzer/divide-by-zero-pr124195-2.c: Likewise. * gcc.dg/analyzer/data-model-1.c (test_21): Split out division by zero cases into... (test_21_division_by_zero): ...this, and... (test_21_modulus_by_zero): ...this, updating these to expect -Wanalyzer-div-by-zero warnings. * gcc.dg/analyzer/divide-by-zero-float.c: New test. * gcc.dg/analyzer/divide-by-zero-ice-pr124433.c: Update to expect -Wanalyzer-div-by-zero. * gcc.dg/analyzer/divide-by-zero-pr124195-1.c: Likewise. Signed-off-by: David Malcolm <dmalcolm@redhat.com>
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