33 lines
1.3 KiB
Text
33 lines
1.3 KiB
Text
- add .gnu.warning.SYMBOL support to ld.lld(1)
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Index: tools/lld/ELF/Relocations.cpp
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--- tools/lld/ELF/Relocations.cpp.orig
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+++ tools/lld/ELF/Relocations.cpp
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@@ -954,6 +954,18 @@ template <class ELFT> void elf::reportUndefinedSymbols
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undefs.clear();
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}
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+static void reportGNUWarning(Symbol &sym, InputSectionBase &sec,
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+ uint64_t offset) {
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+ if (sym.gwarn) {
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+ StringRef gnuWarning = gnuWarnings.lookup(sym.getName());
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+ // report first occurance only
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+ sym.gwarn = false;
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+ if (!gnuWarning.empty())
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+ message(sec.getSrcMsg(sym, offset) + "(" + sec.getObjMsg(offset) +
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+ "): warning: " + gnuWarning);
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+ }
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+}
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+
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// Report an undefined symbol if necessary.
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// Returns true if the undefined symbol will produce an error message.
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static bool maybeReportUndefined(Symbol &sym, InputSectionBase &sec,
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@@ -1326,6 +1338,8 @@ static void scanReloc(InputSectionBase &sec, OffsetGet
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// marker relocations, e.g. R_*_NONE and R_ARM_V4BX. Don't error on them.
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if (symIndex != 0 && maybeReportUndefined(sym, sec, rel.r_offset))
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return;
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+
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+ reportGNUWarning(sym, sec, rel.r_offset);
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const uint8_t *relocatedAddr = sec.data().begin() + rel.r_offset;
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RelExpr expr = target->getRelExpr(type, sym, relocatedAddr);
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