diff options
| -rw-r--r-- | lld/ELF/LinkerScript.cpp | 6 | ||||
| -rw-r--r-- | lld/test/ELF/linkerscript/locationcountererr.s | 9 |
2 files changed, 14 insertions, 1 deletions
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp index bf19914b53c..68f24acad29 100644 --- a/lld/ELF/LinkerScript.cpp +++ b/lld/ELF/LinkerScript.cpp @@ -464,7 +464,11 @@ template <class ELFT> void LinkerScript<ELFT>::process(BaseCommand &Base) { if (auto *AssignCmd = dyn_cast<SymbolAssignment>(&Base)) { if (AssignCmd->Name == ".") { // Update to location counter means update to section size. - Dot = AssignCmd->Expression(Dot); + uintX_t Val = AssignCmd->Expression(Dot); + if (Val < Dot) + error("unable to move location counter backward for: " + + CurOutSec->Name); + Dot = Val; CurOutSec->Size = Dot - CurOutSec->Addr; return; } diff --git a/lld/test/ELF/linkerscript/locationcountererr.s b/lld/test/ELF/linkerscript/locationcountererr.s new file mode 100644 index 00000000000..7664d8d4691 --- /dev/null +++ b/lld/test/ELF/linkerscript/locationcountererr.s @@ -0,0 +1,9 @@ +# REQUIRES: x86 +# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t +# RUN: echo "SECTIONS { .text 0x2000 : {. = 0x10 ; *(.text) } }" > %t.script +# RUN: not ld.lld %t --script %t.script -o %t1 2>&1 | FileCheck %s +# CHECK: unable to move location counter backward for: .text + +.globl _start +_start: +nop |
