https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106181
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tim Lange <tla...@gcc.gnu.org>: https://gcc.gnu.org/g:c83e97317efb87fd5639a9ee9ec55aa1caa5423e commit r13-2115-gc83e97317efb87fd5639a9ee9ec55aa1caa5423e Author: Tim Lange <m...@tim-lange.me> Date: Thu Aug 18 11:36:08 2022 +0200 analyzer: warn on the use of floating-points operands in the size argument [PR106181] This patch fixes the ICE reported in PR106181 and adds a new warning to the analyzer complaining about the use of floating-point operands. Regrtested on Linux x86_64. 2022-08-17 Tim Lange <m...@tim-lange.me> gcc/analyzer/ChangeLog: PR analyzer/106181 * analyzer.opt: Add Wanalyzer-imprecise-floating-point-arithmetic. * region-model.cc (is_any_cast_p): Formatting. (region_model::check_region_size): Ensure precondition. (class imprecise_floating_point_arithmetic): New abstract diagnostic class for all floating-point related warnings. (class float_as_size_arg): Concrete diagnostic class to complain about floating-point operands inside the size argument. (class contains_floating_point_visitor): New visitor to find floating-point operands inside svalues. (region_model::check_dynamic_size_for_floats): New function. (region_model::set_dynamic_extents): Call to check_dynamic_size_for_floats. * region-model.h (class region_model): Add region_model::check_dynamic_size_for_floats. gcc/ChangeLog: PR analyzer/106181 * doc/invoke.texi: Add Wanalyzer-imprecise-fp-arithmetic. gcc/testsuite/ChangeLog: PR analyzer/106181 * gcc.dg/analyzer/allocation-size-1.c: New test. * gcc.dg/analyzer/imprecise-floating-point-1.c: New test. * gcc.dg/analyzer/pr106181.c: New test.
