GCC modified for the FreeChainXenon project
b7028f060c
Amongst other things PR analyzer/96798 notes that region_model::on_call_pre treats any builtin that hasn't been coded yet as a no-op (albeit with an unknown return value), which is wrong for non-pure builtins. This patch updates that function's handling of such builtins so that it instead conservatively assumes that any escaped/reachable regions can be affected by the call, and implements enough handling of specific builtins to avoid regressing the testsuite (I hope). gcc/analyzer/ChangeLog: PR analyzer/96798 * region-model-impl-calls.cc (region_model::impl_call_memcpy): New. (region_model::impl_call_strcpy): New. * region-model.cc (region_model::on_call_pre): Flag unhandled builtins that are non-pure as having unknown side-effects. Implement BUILT_IN_MEMCPY, BUILT_IN_MEMCPY_CHK, BUILT_IN_STRCPY, BUILT_IN_STRCPY_CHK, BUILT_IN_FPRINTF, BUILT_IN_FPRINTF_UNLOCKED, BUILT_IN_PUTC, BUILT_IN_PUTC_UNLOCKED, BUILT_IN_FPUTC, BUILT_IN_FPUTC_UNLOCKED, BUILT_IN_FPUTS, BUILT_IN_FPUTS_UNLOCKED, BUILT_IN_FWRITE, BUILT_IN_FWRITE_UNLOCKED, BUILT_IN_PRINTF, BUILT_IN_PRINTF_UNLOCKED, BUILT_IN_PUTCHAR, BUILT_IN_PUTCHAR_UNLOCKED, BUILT_IN_PUTS, BUILT_IN_PUTS_UNLOCKED, BUILT_IN_VFPRINTF, BUILT_IN_VPRINTF. * region-model.h (region_model::impl_call_memcpy): New decl. (region_model::impl_call_strcpy): New decl. gcc/testsuite/ChangeLog: PR analyzer/96798 * gcc.dg/analyzer/memcpy-1.c: New test. * gcc.dg/analyzer/strcpy-1.c: New test. |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
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| libgfortran | ||
| libgo | ||
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| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
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| libquadmath | ||
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| libstdc++-v3 | ||
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| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
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| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
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| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
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| ltmain.sh | ||
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| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
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| missing | ||
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