[all-commits] [llvm/llvm-project] 3d2a91: [clang] Fixes inf loop parsing fixed point literal...

[PiJoules via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3d2a918831e7bcf1285641ee446ac1640819819f
      https://github.com/llvm/llvm-project/commit/3d2a918831e7bcf1285641ee446ac1640819819f
  Author: PiJoules <6019989+PiJoules at users.noreply.github.com>
  Date:   2024-02-26 (Mon, 26 Feb 2024)

  Changed paths:
    M clang/lib/Lex/LiteralSupport.cpp
    M clang/test/Frontend/fixed_point_declarations.c

  Log Message:
  -----------
  [clang] Fixes inf loop parsing fixed point literal (#83071)

Clang was incorrectly finding the start of the exponent in a fixed point
hex literal. It would unconditionally find the first `e/E/p/P` in a
constant regardless of if it were hex or not and parser the remaining
digits as an APInt. In a debug build, this would be caught by an
assertion, but in a release build, the assertion is removed and we'd end
up in an infinite loop.

Fixes #83050



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