libbacktrace: Fix uninitialized variable #39509
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@bors: r+ Nice find! |
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📌 Commit d14b268 has been approved by |
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Nominating for a beta backport |
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libbacktrace: Fix uninitialized variable Fixes rust-lang#39468
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libbacktrace: Fix uninitialized variable Fixes rust-lang#39468
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libbacktrace: Fix uninitialized variable Fixes rust-lang#39468
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Accepted for backport in libs triage today |
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In rust-lang/rust#39468 it was discovered that this could cause a crash in libbacktrace due to freeing uninitialized memory, and this specific instance was fixed in rust-lang/rust#39509
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In rust-lang/rust#39468 it was discovered that this could cause a crash in libbacktrace due to freeing uninitialized memory, and this specific instance was fixed in rust-lang/rust#39509
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… of uninitialized bytes in pecoff.c; 3) Fix a use of undefined memory in pecoff.c 1) Note: as we target MINGW here, we still want to look up the symbols via the DWARF method (the native Windows way would be to call the SymFromAddr() function, but that would require .pdb files which MINGW does not produce). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> 2) This updates the local declaration of `str_size` to always be 4 bytes instead of platform-dependent as its initialization later on only fills in 4 bytes instead of all the bytes of `size_t`. Originally reported as rust-lang/rust#28447 this was fixed in rust-lang/rust#30908 3) In rust-lang/rust#39468 it was discovered that this could cause a crash in libbacktrace due to freeing uninitialized memory, and this specific instance was fixed in rust-lang/rust#39509
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In rust-lang/rust#39468 it was discovered that this could cause a crash in libbacktrace due to freeing uninitialized memory, and this specific instance was fixed in rust-lang/rust#39509
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Fixes #39468