79a28aa0a4
Ignore the `[[malloc(x)]]` or `[[malloc(x, 1)]]` function attribute syntax added in [GCC 11][1] and print a warning instead of an error. Unlike `[[malloc]]` with no arguments (which is supported by Clang), GCC uses the one or two argument form to specify a deallocator for GCC's static analyzer. Code currently compiled with `[[malloc(x)]]` or `__attribute((malloc(x)))` fails with the following error: `'malloc' attribute takes no arguments`. [1]: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;f=gcc/doc/extend.texi;h=dce6c58db87ebf7f4477bd3126228e73e4eeee97#patch6 Fixes: https://github.com/llvm/llvm-project/issues/51607 Partial-Bug: https://github.com/llvm/llvm-project/issues/53152
13 lines
509 B
C
13 lines
509 B
C
// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s
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int *Mem;
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void dealloc(int*);
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__attribute__((malloc)) int *MallocFunc(){ return Mem;}
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// CHECK: define[[BEFORE:.*]] noalias[[AFTER:.*]]@MallocFunc
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// Ensure these two do not generate noalias here.
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__attribute__((malloc(dealloc))) int *MallocFunc2(){ return Mem;}
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// CHECK: define[[BEFORE]][[AFTER]]@MallocFunc2
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__attribute__((malloc(dealloc, 1))) int *MallocFunc3(){ return Mem;}
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// CHECK: define[[BEFORE]][[AFTER]]@MallocFunc3
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