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Jules Villard 55586b581b [preanalysis] do not delay killing variables taken by reference ... Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52		6 years ago
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ant	[infer] the bug hash should also consider the anonymous classes in the qualifier	6 years ago
assembly	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
buck	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
buck-clang-db	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
buck_blacklist	[tests] fix buck tests	6 years ago
buck_cross_module	[RFC] Format all java files	6 years ago
buck_flavors	[tests] fix buck tests	6 years ago
buck_flavors_deterministic	[tests] fix buck tests	6 years ago
buck_flavors_diff	[tests] fix buck tests	6 years ago
buck_flavors_run	[tests] fix buck tests	6 years ago
buck_javac_jar	[tests] fix buck tests	6 years ago
ck_analytics	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
ck_imports	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_compilation_db	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_compilation_db_escaped	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_compilation_db_relpath	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_multiple_files	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_translation	Change license to MIT	7 years ago
clang_unknown_ext	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_with_E_flag	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_with_MD_flag	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_with_M_flag	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
clang_with_blacklisted_flags	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
cmake	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
codetoanalyze	[preanalysis] do not delay killing variables taken by reference	6 years ago
deduplicate_template_warnings	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
delete_results_dir	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
diff	[clang] leave markers of variable initialization for pulse	6 years ago
diff_gen_build_script	[clang] leave markers of variable initialization for pulse	6 years ago
differential_interesting_paths_filter	[Perf] Perform comparisons of costs-reports by using costs-report.json files	6 years ago
differential_of_costs_report	[Perf] Embed filtering for costs reports	6 years ago
differential_skip_anonymous_class_renamings	[RFC] Format all java files	6 years ago
differential_skip_duplicated_types_on_filenames	[Perf] Perform comparisons of costs-reports by using costs-report.json files	6 years ago
differential_skip_duplicated_types_on_filenames_with_renamings	[Perf] Perform comparisons of costs-reports by using costs-report.json files	6 years ago
duplicate_symbols	[proc-cfg][2/5] fix duplicate symbols detection	6 years ago
fail_on_issue	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
genrule	[RFC] Format all java files	6 years ago
gradle	[RFC] Format all java files	6 years ago
inferconfig	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
inferconfig_not_strict	Allow ints for int options in .inferconfig	6 years ago
infertop	[toplevel] install infertop in infer/bin/ to get models and stuff	6 years ago
j1	Change license to MIT	7 years ago
java_test_determinator	[TD] Change JSON format for test-determinator	6 years ago
javac	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
linters	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
make	[RFC] Format all java files	6 years ago
mock	Change license to MIT	7 years ago
mvn	[RFC] Format all java files	6 years ago
ndk_build	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
objc_getters_setters	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
objc_missing_fld	[clang] leave markers of variable initialization for pulse	6 years ago
objc_retain_cycles	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
objc_retain_cycles_weak	[objc] add test for strong/weak self references	6 years ago
preprocessed	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
project_root_rel	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
racerd_dedup	[RFC] Format all java files	6 years ago
racerd_traces	[RFC] Format all java files	6 years ago
reactive	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
resource_leak_exception_lines	[RFC] Format all java files	6 years ago
results_xml	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
run_hidden_linters	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
tracebugs	Change license to MIT	7 years ago
utf8_in_procname	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
utf8_in_pwd	[RFC] Format all java files	6 years ago
waf	[RFC] Format all java files	6 years ago
xcodebuild	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago
xcodebuild_no_xcpretty	[kill -a][1/4] stop using `-a foo` in the infer repo	6 years ago