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| author | John Colanduoni <john@colanduoni.com> | 2017-11-08 02:28:17 -0800 |
|---|---|---|
| committer | John Colanduoni <john@colanduoni.com> | 2017-11-08 02:28:17 -0800 |
| commit | 8581b59fb39b0072665de59b1a70e708b251d4b0 (patch) | |
| tree | b7cb00943b224a1e64e464d03773a974418573f3 /src/libbacktrace | |
| parent | e177df3d5c4a5a9432f33f54ee459ea25bf7f2d2 (diff) | |
| download | rust-8581b59fb39b0072665de59b1a70e708b251d4b0.tar.gz rust-8581b59fb39b0072665de59b1a70e708b251d4b0.zip | |
Disable `mmap` in `libbacktrace` on Apple platforms
Fixes #45731 libbacktrace uses mmap if available to map ranges of the files containing debug information. On macOS `mmap` will succeed even if the mapped range does not exist, and a SIGBUS (with an unusual EXC_BAD_ACCESS code 10) will occur when the program attempts to page in the memory. To combat this we force `libbacktrace` to be built with the simple `read` based fallback on Apple platforms.
Diffstat (limited to 'src/libbacktrace')
| -rwxr-xr-x | src/libbacktrace/configure | 6 | ||||
| -rw-r--r-- | src/libbacktrace/configure.ac | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/libbacktrace/configure b/src/libbacktrace/configure index df6497fc646..873220794bd 100755 --- a/src/libbacktrace/configure +++ b/src/libbacktrace/configure @@ -12323,6 +12323,12 @@ fi fi fi + +case "${host_os}" in +darwin*) + have_mmap=no ;; +esac + if test "$have_mmap" = "no"; then VIEW_FILE=read.lo ALLOC_FILE=alloc.lo diff --git a/src/libbacktrace/configure.ac b/src/libbacktrace/configure.ac index 7ae21b8d1a6..ea1b27d807e 100644 --- a/src/libbacktrace/configure.ac +++ b/src/libbacktrace/configure.ac @@ -283,6 +283,12 @@ else AC_CHECK_FUNC(mmap, [have_mmap=yes], [have_mmap=no]) fi fi + +case "${host_os}" in +darwin*) + have_mmap=no ;; +esac + if test "$have_mmap" = "no"; then VIEW_FILE=read.lo ALLOC_FILE=alloc.lo |