std: Use target_pointer_width for BACKTRACE_ELF_SIZE #53377
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The former code used `target.contains("64")` to detect Elf64 targets,
but this is inaccurate in a few cases:
- `s390x-unknown-linux-gnu` is 64-bit
- `sparcv9-sun-solaris` is 64-bit
- `x86_64-unknown-linux-gnux32` is 32-bit
Instead the `std` build script can use `CARGO_CFG_TARGET_POINTER_WIDTH`
to reliably detect 64-bit targets for libbacktrace.
Also update to backtrace-sys 0.1.24 for rust-lang/backtrace-rs#122.
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Fixes #53372 when |
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@bors: r+ |
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📌 Commit e0d8364 has been approved by |
kennytm
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Aug 16, 2018
…chton
std: Use target_pointer_width for BACKTRACE_ELF_SIZE
The former code used `target.contains("64")` to detect Elf64 targets,
but this is inaccurate in a few cases:
- `s390x-unknown-linux-gnu` is 64-bit
- `sparcv9-sun-solaris` is 64-bit
- `x86_64-unknown-linux-gnux32` is 32-bit
Instead the `std` build script can use `CARGO_CFG_TARGET_POINTER_WIDTH`
to reliably detect 64-bit targets for libbacktrace.
Also update to backtrace-sys 0.1.24 for rust-lang/backtrace-rs#122.
bors
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that referenced
this pull request
Aug 16, 2018
Rollup of 10 pull requests Successful merges: - #52946 (Documented impl From on line 367 of libserialize/json.rs) - #53234 (Remove Travis shutdown debug scripts, and remove CI-specific DNS settings) - #53313 (Two small improvements) - #53360 (Addressed #51602) - #53364 (Warn if the user tries to use GATs) - #53373 (Tweak unclosed delimiter parser error) - #53377 (std: Use target_pointer_width for BACKTRACE_ELF_SIZE) - #53395 (Use #[non_exhaustive] on internal enums) - #53399 (Tidy: ignore non-Markdown files when linting for the Unstable Book) - #53412 (syntax_ext: remove leftover span_err_if_not_stage0 macro.)
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Ping @rust-lang/libs, should this PR be backported to beta? |
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Ah certainly! This is fine to backport |
bors
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Sep 4, 2018
[beta] update backtrace-sys to 0.1.24 This is the other part of #53377 that was missed in the #53880 backport. r? @pietroalbini
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The former code used
target.contains("64")to detect Elf64 targets,but this is inaccurate in a few cases:
s390x-unknown-linux-gnuis 64-bitsparcv9-sun-solarisis 64-bitx86_64-unknown-linux-gnux32is 32-bitInstead the
stdbuild script can useCARGO_CFG_TARGET_POINTER_WIDTHto reliably detect 64-bit targets for libbacktrace.
Also update to backtrace-sys 0.1.24 for rust-lang/backtrace-rs#122.