[Bug middle-end/112510] [11/12/13/14 Regression]: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #17 from Vladimir Sadovnikov --- Reproducible with 11.4.0 ~$ export ASAN_OPTIONS=detect_stack_use_after_return=1 ~$ g++ -fsanitize=address -Og test-case.cpp ~$ ./a.out Aborted (core dumped) ~$ gcc --version gcc (Ubuntu 11.4.0-1ubun

[Bug middle-end/112510] [11/12/13/14 Regression]: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #15 from Vladimir Sadovnikov --- Hmmm. But why not? We're just looking for the value stored in %rbx register... Here's scenario for GCC 7.5.0: ~/tmp> gcc --version gcc (SUSE Linux) 7.5.0 Copyright (C) 2017 Free Software Foundation,

[Bug middle-end/112510] [11/12/13/14 Regression]: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #14 from Vladimir Sadovnikov --- Seems that with GCC 7.6 it also will be reproducible because we have the same code there: ``` 40089c: bf 80 03 00 00 mov$0x380,%edi 4008a1: e8 6a fd ff ff call

[Bug middle-end/112510] [11/12/13/14 Regression]: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #13 from Vladimir Sadovnikov --- Here is the full scenario: ~$ g++ --version g++ (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0 Copyright (C) 2021 Free Software Foundation, Inc. This is free software; see the source for copying conditions.

[Bug middle-end/112510] [11/12/13/14 Regression]: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #12 from Vladimir Sadovnikov --- Oh wow, it seems that this makes the code to crash: ``` export ASAN_OPTIONS=detect_stack_use_after_return=1 ./test ```

[Bug middle-end/112510] [11/12/13/14 Regression]: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #11 from Vladimir Sadovnikov --- I mean, this code may work in improper way if ASAN allocates only 0x20 bytes on the stack: ``` 138d: bf 80 03 00 00 mov$0x380,%edi 1392: e8 39 fd ff ff call

[Bug middle-end/112510] [11/12/13/14 Regression]: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #10 from Vladimir Sadovnikov --- Sorry, I messed up %rbx with loading %rdx from stack. But it seems that the ASAN-reladed code somehow modifies %rbx. And now I'm not sure that the code generated by GCC 11.4.0 will work under certain

[Bug middle-end/112510] Regression: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #7 from Vladimir Sadovnikov --- Disassembly for GCC 11.4.0: ``` 11e9 <_Z13gate_x1_curvePfPKfPKN3dsp11gate_knee_tEm>: 11e9: f3 0f 1e fa endbr64 11ed: 55 push %rbp

[Bug middle-end/112510] Regression: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 --- Comment #6 from Vladimir Sadovnikov --- Here is disassembly of `test.cpp` function for GCC 7.5.0: ``` 00400727 <_Z13gate_x1_curvePfPKfPKN3dsp11gate_knee_tEm>: 400727: 4c 8d 54 24 08 lea0x8(%rsp),%r10 40072c:

[Bug c++/112510] Regression: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 Vladimir Sadovnikov changed: What|Removed |Added Status|RESOLVED|UNCONFIRMED Resolution|FI

[Bug c++/112510] Regression: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 Vladimir Sadovnikov changed: What|Removed |Added Resolution|INVALID |FIXED --- Comment #2 from Vladimi

[Bug c++/112510] New: Regression: ASAN code injection breaks alignment of stack variables

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510 Bug ID: 112510 Summary: Regression: ASAN code injection breaks alignment of stack variables Product: gcc Version: 13.2.1 Status: UNCONFIRMED Severity: normal