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[gdb/symtab] Trust epilogue unwind info for unknown or non-gcc producer

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Currently we only trust epilogue unwind info only for gcc >= 4.5.0.

This has the effect that we don't trust epilogue unwind info for:
- unknown producers (CU without DW_AT_producer attribute)
- non-gcc producers (say, clang).

Instead, only distrust epilogue unwind info only for gcc < 4.5.0.
This commit is contained in:
Tom de Vries
2023-02-20 12:20:14 +01:00
parent 8908d9c45c
commit 868014341a
1 changed files with 7 additions and 1 deletions
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8
gdb/dwarf2/read.c
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@ -6460,7 +6460,13 @@ process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language)
if (cu->has_loclist && gcc_4_minor >= 5)
cust->set_locations_valid (true);
if (gcc_4_minor >= 5)
int major, minor;
if (cu->producer != nullptr
&& producer_is_gcc (cu->producer, &major, &minor)
&& (major < 4 || (major == 4 && minor < 5)))
/* Don't trust gcc < 4.5.x. */
cust->set_epilogue_unwind_valid (false);
else
cust->set_epilogue_unwind_valid (true);
cust->set_call_site_htab (cu->call_site_htab);