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unwind: fix unwind build without heap

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Add a missing guard for `_LIBUNWIND_NO_HEAP` around code dealing with the
`.cfi_remember_state` and `.cfi_restore_state` instructions.

Patch by Amanieu d'Antras!
This commit is contained in:
Saleem Abdulrasool 2020-05-15 14:43:19 -07:00
parent ec44e08940
commit b31cb3aa5e
1 changed files with 2 additions and 0 deletions
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libunwind/src/DwarfParser.hpp
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@ -401,6 +401,7 @@ bool CFI_Parser<A>::parseFDEInstructions(A &addressSpace,
fdeInfo.fdeStart + fdeInfo.fdeLength, cieInfo,
upToPC - fdeInfo.pcStart, rememberStack, arch, results);
#if !defined(_LIBUNWIND_NO_HEAP)
// Clean up rememberStack. Even in the case where every DW_CFA_remember_state
// is paired with a DW_CFA_restore_state, parseInstructions can skip restore
// opcodes if it reaches the target PC and stops interpreting, so we have to
@ -410,6 +411,7 @@ bool CFI_Parser<A>::parseFDEInstructions(A &addressSpace,
free(rememberStack);
rememberStack = next;
}
#endif
return returnValue;
}