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Small DWARF fixups

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* Clang doesn't seem to emit a DW_AT_low_pc together with DW_AT_ranges
  for asm files.
* Keep reading the other CUs if the lookup fails.
This commit is contained in:
LemonBoy 2020-01-29 18:40:52 +01:00 committed by Andrew Kelley
parent 7ebc624a15
commit e77a102e24
1 changed files with 6 additions and 4 deletions
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10
lib/std/debug.zig
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@ -1390,8 +1390,12 @@ pub const DwarfInfo = struct {
// All the addresses in the list are relative to the value
// specified by DW_AT_low_pc or to some other value encoded
// in the list itself
var base_address = try compile_unit.die.getAttrAddr(DW.AT_low_pc);
// in the list itself.
// If no starting value is specified use zero.
var base_address = compile_unit.die.getAttrAddr(DW.AT_low_pc) catch |err| switch (err) {
error.MissingDebugInfo => 0,
else => return err,
};
try s.seekable_stream.seekTo(ranges_offset);
@ -1410,8 +1414,6 @@ pub const DwarfInfo = struct {
return compile_unit;
}
}
return error.InvalidDebugInfo;
} else |err| {
if (err != error.MissingDebugInfo) return err;
continue;