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3e09822407
If the previous instruction is not a leaf instruction, then the PC was incremented before the instruction was ran (meaning the currently executing instruction is actually the previous instruction), so we should not increment the PC otherwise we will calculate the source line for the next instruction. This bug can be reproduced in the following script: ``` require "objspace" ObjectSpace.trace_object_allocations_start a = 1.0 / 0.0 p [ObjectSpace.allocation_sourceline(a), ObjectSpace.allocation_sourcefile(a)] ``` Which outputs: [4, "test.rb"] This is incorrect because the object was allocated on line 10 and not line 4. The behaviour is correct when we use a leaf instruction (e.g. if we replaced `1.0 / 0.0` with `"hello"`), then the output is: [10, "test.rb"]. [Bug #19456]
37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
#ifndef INTERNAL_COMPILE_H /*-*-C-*-vi:se ft=c:*/
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#define INTERNAL_COMPILE_H
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/**
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @brief Internal header for the compiler.
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*/
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#include "ruby/internal/config.h"
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#include <stddef.h> /* for size_t */
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#include "ruby/ruby.h" /* for rb_event_flag_t */
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struct rb_iseq_struct; /* in vm_core.h */
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/* compile.c */
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int rb_dvar_defined(ID, const struct rb_iseq_struct *);
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int rb_local_defined(ID, const struct rb_iseq_struct *);
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bool rb_insns_leaf_p(int i);
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int rb_insn_len(VALUE insn);
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const char *rb_insns_name(int i);
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VALUE rb_insns_name_array(void);
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int rb_iseq_cdhash_cmp(VALUE val, VALUE lit);
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st_index_t rb_iseq_cdhash_hash(VALUE a);
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/* iseq.c */
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int rb_vm_insn_addr2insn(const void *);
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int rb_vm_insn_decode(const VALUE encoded);
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extern bool ruby_vm_keep_script_lines;
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MJIT_SYMBOL_EXPORT_BEGIN
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/* iseq.c (export) */
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rb_event_flag_t rb_iseq_event_flags(const struct rb_iseq_struct *iseq, size_t pos);
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MJIT_SYMBOL_EXPORT_END
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#endif /* INTERNAL_COMPILE_H */
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