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Missing typecast for hexadecimal format of floating point value #4583

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yangzao opened this issue Apr 17, 2024 · 0 comments
Open

Missing typecast for hexadecimal format of floating point value #4583

yangzao opened this issue Apr 17, 2024 · 0 comments
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bug Something is broken needs-triage Issue has yet to be looked at by a maintainer

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@yangzao
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yangzao commented Apr 17, 2024

Description

Original code:

((double)(13134243433))

Decompiled code:

0x420876e533480000

0x420876e533480000 is the hexadecimal format of 13134243433.0,
but there is no explicit typecasting for it, which makes it being considered as a long long integer.

Steps to reproduce the bug

Files:
2.zip

  1. compile orig.c with GCC and -O0
  2. decompile the compiled program with angr
  3. in the decompiled code, go to func_1() and the issue is at the for loop near the end of func_1().

Environment

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Additional context

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@yangzao yangzao added bug Something is broken needs-triage Issue has yet to be looked at by a maintainer labels Apr 17, 2024
@yangzao yangzao changed the title Incorrect value when casting a long integer to double Missing typecast for hexadecimal format of floating point value Apr 22, 2024
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