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author | Stefan Liebler <stli@linux.ibm.com> | 2020-03-05 12:52:19 +0100 |
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committer | Stefan Liebler <stli@linux.ibm.com> | 2020-03-05 12:52:19 +0100 |
commit | 13010976653675db489292dd4e253af2b5be2557 (patch) | |
tree | dd3a313e2b77d76aa3b3d2c676e20805dc4576d7 /math/test-math-iscanonical.cc | |
parent | f801cf7bb146f9dd7b5e124e752c54194698e132 (diff) | |
download | glibc-13010976653675db489292dd4e253af2b5be2557.tar.gz glibc-13010976653675db489292dd4e253af2b5be2557.tar.xz glibc-13010976653675db489292dd4e253af2b5be2557.zip |
S390: Remove backchain-based fallback and use generic backtrace.c.
After recent discussions: - "[PATCH] s390: Remove backchain-based fallback from backtrace" https://www.sourceware.org/ml/libc-alpha/2020-02/msg00287.html - "Re: [PATCH 07/11] s390: Implement backtrace on top of <unwind-link.h>" https://www.sourceware.org/ml/libc-alpha/2020-02/msg00637.html We've checked and decided to remove the backchain: We don't know of any environments without libgcc. Thus the backchain unwinder is not used. If somebody builds with -mbackchain and without fasynchronous-unwind-tables and has libgcc installed, then the libgcc unwinder is called but not the backchain-based fallback. This step allows to get rid of the s390x specific backtrace.c files at all. Furthermore the now used debug/backtrace.c version has some more advantages: - Free all resources if necessary. (libc_freeres_fn) - Remove NULL address above _start. - Check whether we make any progress while getting addresses.
Diffstat (limited to 'math/test-math-iscanonical.cc')
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