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Fix linking errors when doing full debug build with ASAN: Disable ASAN for extern. #113891

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Bastien Montagne merged 3 commits from mont29/blender:tmp-fix-linking-with-asan into main 2023-10-19 11:07:15 +02:00
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Bastien Montagne commented 2023-10-18 15:56:07 +02:00
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With current main code, trying to build a full debug build with ASAN
enabled will fail at linking, due to out-of-bound memory references
within the binary file, e.g.:

  mold: error: /usr/lib/gcc/x86_64-linux-gnu/13/crtbegin.o:(.text):
        relocation R_X86_64_32S against .tm_clone_table out of range:
        2147741344 is not in [-2147483648, 2147483648)

This commit works around the issue by disabling ASAN by default for the
extern dependencies. A new WITH_EXTERN_ASAN CMake option is added to
enable it if needed - some components need to be disabled then.

NOTE: This is submitted primarily as a base for discussions regarding #113892

With current main code, trying to build a full debug build with ASAN enabled will fail at linking, due to out-of-bound memory references within the binary file, e.g.: ``` mold: error: /usr/lib/gcc/x86_64-linux-gnu/13/crtbegin.o:(.text): relocation R_X86_64_32S against .tm_clone_table out of range: 2147741344 is not in [-2147483648, 2147483648) ``` This commit works around the issue by disabling ASAN by default for the `extern` dependencies. A new `WITH_EXTERN_ASAN` CMake option is added to enable it if needed - some components need to be disabled then. ------------------- NOTE: This is submitted primarily as a base for discussions regarding #113892
Bastien Montagne commented 2023-10-18 15:59:35 +02:00
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@brecht @Sergey @Jeroen-Bakker @ideasman42 for visibility.

@brecht @Sergey @Jeroen-Bakker @ideasman42 for visibility.
Sergey Sharybin reviewed 2023-10-18 18:35:33 +02:00
extern/CMakeLists.txt Outdated
@ -22,1 +22,4 @@
if(WITH_COMPILER_ASAN AND NOT WITH_EXTERN_ASAN)
# Disable ASAN for extern dependencies, as it can lead to linking issues due to too large binaries.
string(APPEND CMAKE_CXX_FLAGS_RELWITHDEBINFO " -fno-sanitize=all")
Sergey Sharybin commented 2023-10-18 18:35:31 +02:00
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Should this also be done for C? Otherwise it feels inconsistent with what the options qadvertizes.

Should this also be done for C? Otherwise it feels inconsistent with what the options qadvertizes.
Bastien Montagne commented 2023-10-18 19:08:08 +02:00
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Indeed, will do

Indeed, will do
mont29 marked this conversation as resolved
Bastien Montagne force-pushed tmp-fix-linking-with-asan from ba55b8973c to 93cd999d0c 2023-10-18 19:11:51 +02:00 Compare
Bastien Montagne commented 2023-10-18 19:12:11 +02:00
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@blender-bot build

@blender-bot build
Sergey Sharybin approved these changes 2023-10-18 19:23:18 +02:00
Sergey Sharybin left a comment
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On a code side seems fine.

On a code side seems fine.
Campbell Barton approved these changes 2023-10-19 09:47:05 +02:00
CMakeLists.txt Outdated
@ -846,6 +846,12 @@ Build and link against address sanitizer (only for Debug & RelWithDebInfo target
OFF
)
mark_as_advanced(WITH_COMPILER_ASAN)
option(WITH_EXTERN_ASAN "\
Campbell Barton commented 2023-10-19 09:46:34 +02:00
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picky could this be called WITH_COMPILER_ASAN_EXTERN ? (or similar suffix) otherwise these options aren't ordered usefully.

*picky* could this be called `WITH_COMPILER_ASAN_EXTERN` ? (or similar suffix) otherwise these options aren't ordered usefully.
👍 1
Bastien Montagne force-pushed tmp-fix-linking-with-asan from 93cd999d0c to 09715108dc 2023-10-19 10:55:44 +02:00 Compare
Bastien Montagne merged commit ab91c18995 into main 2023-10-19 11:07:15 +02:00
Bastien Montagne deleted branch tmp-fix-linking-with-asan 2023-10-19 11:07:17 +02:00
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