Upgrade to 2.5.0-4 toolchain w/improved pgm_read_x, C++ exceptions #6273
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Rebuild the entire toolchain (including standard libraries) with the latest pgm_read_xxx headers included (which fix unaligned dword reads from progmem and run faster/smaller, and a pgm_read_byte change which removes an instruction on each read saving flash). Pull in latest bearssl while we're at it, too, which speeds up EC handshakes and reduced ROM usage, too.
earlephilhower
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As we've just found issues w/exceptions, it makes sense to hold off on this until we backport the 9.1 changes to 4.8. |
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Apply the GCC9.1 patches (with needed changes) to GCC4.8. Exception code now only does 32b aligned reads from progmem to access the eh_table (some via -mforce-l32, some via hand-inserted pgm_read_x macros).
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Now works as expected (remember, regexes are broken in GCC until after 5.2, so the regex_error is expected): |
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Fixes #6305 |
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Rebuild the entire toolchain (including standard libraries) with the
latest pgm_read_xxx headers included (which fix unaligned dword reads
from progmem and run faster/smaller, and a pgm_read_byte change which
removes an instruction on each read saving flash).
Pull in latest bearssl while we're at it, too, which speeds up EC
handshakes and reduces ROM usage, too.