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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - The lld cannot identify LMA overlapping when the VMA is not specified."
href="https://bugs.llvm.org/show_bug.cgi?id=46263">46263</a>
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<th>Summary</th>
<td>The lld cannot identify LMA overlapping when the VMA is not specified.
</td>
</tr>
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<th>Product</th>
<td>lld
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>ELF
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>2077213809@qq.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, smithp352@googlemail.com
</td>
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<div>
<pre>I used the latest lld and one of the versions of lld and found that the latest
version had a problem.
MEMORY {
DDR : o = 0xfb00000, l = 185M
TCM : o = 0x1F400000, l = 128K
}
SECTIONS {
.text 0xfb00000 : {
* (.text);
_etext = .;
} > DDR
.mdata : AT(LOADADDR(.text) + SIZEOF(.text)) {
_data = .;
*(.data);
_edata = .;
} > TCM
.bss : { // This is not reasonable because the LMA of .bss overlaps that of
.mdata.
_bstart = .;
*(.bss) * (COMMON);
_bend = .;
} > DDR
.ARM.exidx : {
*(.ARM.exidx);
} > DDR
}
// The latest linker. from <a href="https://github.com/llvm/llvm-project">https://github.com/llvm/llvm-project</a> Source code
compilation
ld.lld -T my.ld test.o
objdump -hw a.out
## the .bss LMA is a Strange numbers.
Idx Name Size VMA LMA File off Algn Flags
0 .text 00000008 0fb00000 0fb00000 00001000 2**2 CONTENTS,
ALLOC, LOAD, READONLY, CODE
1 .mdata 00000004 1f400000 0fb00008 00002000 2**2 CONTENTS,
ALLOC, LOAD, DATA
2 .bss 00000008 0fb00008 00200010 00002004 2**2 ALLOC
3 .ARM.exidx 00000010 0fb00010 00200018 00002010 2**2 CONTENTS,
ALLOC, LOAD, READONLY, DATA
4 .<a href="show_bug.cgi?id=46263#c000000">comment 000000</a>bc 00000000 00000000 00002020 2**0 CONTENTS,
READONLY
5 .ARM.attributes 0000003e 00000000 00000000 000020dc 2**0 CONTENTS,
READONLY
// one of version lld. The overlap can be identified.
//./ld.lld -v
//LLD 11.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
07d68c24aa19483e44db4336b0935b00a5d69949) (compatible with GNU linkers)
ld.lld -T gcc.ld test.o
ld.lld: warning: lld uses blx instruction, no object with architecture
supporting feature detected
ld.lld: error: section .mdata load address range overlaps with .bss
<span class="quote">>>> .mdata range is [0xFB00008, 0xFB0000B]
>>> .bss range is [0xFB00008, 0xFB0000F]</span ></pre>
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