[Lldb-commits] [lldb] [lldb][docs] document an analogue for `info proc mappings` (PR #153559)

[David Spickett via lldb-commits]

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@@ -1126,6 +1126,20 @@ Save binary memory data starting at ``0x1000`` and ending at ``0x2000`` to a fil
   (lldb) memory read --outfile /tmp/mem.bin --binary 0x1000 0x2000
   (lldb) me r -o /tmp/mem.bin -b 0x1000 0x2000
 
+
+Print information about mapped memory regions
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DavidSpickett wrote:

LLDB's memory region handling is inconsistent in that in some circumstances, you don't get a region if the address is not mapped, sometimes you do. It's weird and we'd probably fix it if it hadn't been that way for so long.

Anyway, `--all` is one of those situations where the unmapped gaps are shown:
```
(lldb) help memory region 
Get information on the memory region containing an address in the current target process.

Syntax: memory region <address-expression> (or --all)

Command Options Usage:
  memory region <address-expression>
  memory region -a

       -a ( --all )
            Show all memory regions. This is equivalent to starting from address 0 and repeating the
            command. Unmapped areas are included.
```
So if you make the title "Print information about memory regions", that will make it accurate.

`memory region --all` is the closest equivalent, there's no option to hide the unmapped gaps. If you do `memory region 0` then repeat the command, it *might* skip unmapped areas but I don't recall.

https://github.com/llvm/llvm-project/pull/153559