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D63793/rC365272
D63793 removed float-divide-by-zero from the "undefined" set but it
failed to add it to getSupportedSanitizers(), thus the sanitizer is
rejected by the driver:
clang-9: error: unsupported option '-fsanitize=float-divide-by-zero' for target 'x86_64-unknown-linux-gnu'
Also, add SanitizerMask::FloatDivideByZero to a few other masks to make -fsanitize-trap, -fsanitize-recover, -fsanitize-minimal-runtime and -fsanitize-coverage work.
Reviewed By: rsmith, vitalybuka
Differential Revision: https://reviews.llvm.org/D64317
llvm-svn: 365587
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Unless the user uses -Wno-module-file-config-mismatch (or -Wno-error=...),
allow the AST reader to produce errors describing the nature of the config
mismatch.
llvm-svn: 333220
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This patch makes it an error to have a mismatch between the enabled
sanitizers in a CU, and in any module being imported into the CU. Only
mismatches between non-modular sanitizers are treated as errors.
This patch also includes non-modular sanitizers in module hashes, in
order to ensure module rebuilds occur when -fsanitize=X is toggled on
and off for non-modular sanitizers, and to cut down on module rebuilds
when the option is toggled for modular sanitizers.
This fixes a longstanding issue with implicit modules and sanitizers,
which Duncan originally diagnosed.
When building with implicit modules it's possible to hit a scenario
where modules are built without -fsanitize=address, and are subsequently
imported into CUs with -fsanitize=address enabled. This causes strange
failures at runtime. The case Duncan found affects libcxx, since its
vector implementation behaves differently when ASan is enabled.
Implicit module builds should "just work" when -fsanitize=X is toggled
on and off across multiple compiler invocations, which is what this
patch does.
Differential Revision: https://reviews.llvm.org/D32724
llvm-svn: 304463
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