pghs975uc
/
infer_clone
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[web] update FAQ

Browse Source 
Summary:
Brush up or delete old entries.

Fixes https://github.com/facebook/infer/issues/1475

Reviewed By: da319

Differential Revision: D30134773

fbshipit-source-id: f46c901c1
master
Jules Villard 3 years ago committed by Facebook GitHub Bot
parent 50c3f0ba64
commit b6278dfd7d
3 changed files with 49 additions and 136 deletions
Show Stats Download Patch File Download Diff File

61
website/docs/support.md
Unescape View File

@ -40,7 +40,7 @@ adapt to your project:
infer run -- xcodebuild -workspace HelloWorld.xcworkspace -scheme HelloWorld
```
### "infer [options] -- \<build command\>" fails during a linking step
### `infer [options] -- <build command>` fails during a linking step
The linker will sometimes not work if files have been compiled using a different
compiler, such as the one Infer uses [under the hood](/docs/next/infer-workflow) to
@ -66,11 +66,6 @@ Please run Infer with the following environment variable setting:
GCC_PRECOMPILE_PREFIX_HEADER=NO
```
### Using Infer with Maven results in no output
Try upgrading `maven-compiler-plugin`. See also
[this GitHub issue](https://github.com/facebook/infer/issues/38).
### Infer reports a "Too many open files" error
The maximum number of files a program can simultaneously hold open is a bit low
@ -96,27 +91,19 @@ infer run -- gradle build -x lint
See also [this GitHub issue](https://github.com/facebook/infer/issues/58).
### Running "infer [options] -- \<build command\>" fails with some other error
### Running `infer [options] -- <build command>` fails with some other error
Please make sure that:
- \<build command\> runs successfully on its own.
- `<build command>` runs successfully on its own.
- `infer` is in your `$PATH` (try `which infer`, it should show where `infer` is
located)
### Running Infer fails with "ImportError: No module named xml.etree.ElementTree"
Make sure that the `xml` Python package is installed. For instance, on OpenSuse
13.1, it is provided by the
[`python-xmldiff`](http://software.opensuse.org/download.html?project=XML&package=python-xmldiff)
package.
### I get errors compiling Infer
Make sure the dependencies are up to date. They may change as we update Infer
itself; you may also need to recompile the facebook-clang-plugins when it
changes version. See the
[installation document](https://github.com/facebook/infer/blob/master/INSTALL.md)
Make sure the dependencies are up to date. They may change as we
update Infer itself. See the [installation
document](https://github.com/facebook/infer/blob/master/INSTALL.md)
for an up-to-date list of dependencies and how to get them.
### My problem is not listed here
@ -129,9 +116,10 @@ Here are some frequently asked questions. More to come.
### How do I suppress Infer warnings on a class or method?
In Java code, you can do this by annotating your class or method with
`@SuppressLint("infer")`. Or `@SuppressWarnings("infer")` if your Infer is older
than v0.10.0.
In Java code, you can do this *for some error types* by annotating
your class or method with `@SuppressLint("<ISSUE_TYPE>")`, for example
`@SuppressLint("NULL_DEREFERENCE")`. However, not all checkers honor
this annotation.
### Is Infer supported for Windows?
@ -140,12 +128,12 @@ a Linux virtual machine if your project can be compiled on Linux.
### How does Infer compare to the Clang Static Analyzer?
On iOS there is the Clang Static analyzer. Infer does some things different, in
particular reasoning that spans across multiple files. But CSA checks for more
kinds of issues and is also more mature than Infer when it comes to iOS: we send
big respect to CSA! Infer has only got started there recently. Really, these
tools complement one another and it would even make sense to use both. Indeed,
that's what we do inside Facebook.
Infer and Clang Static Analyzer (CSA) will typically find different
kinds of issues on the same project. One thing that sets Infer apart
from other static analysis tools is its ability to reason and find
issues across multiple files. But CSA will find many kinds of issues
that Infer doesn't find: we send big respect to CSA! Really, these
tools complement one another and it makes sense to use both.
### How does Infer compare to Android linters and Findbugs?
@ -154,20 +142,3 @@ Linters, in contrast, typically implement simple syntactic checks that are local
within one procedure. But they are valuable and Infer doesn't try to duplicate
what they are good at. At Facebook we run both Infer and a collection of Android
linters. Findbugs can be useful too; it is more akin to linters.
### Why Infer doesn't find a particular bug?
The answer here is for one of the checkers of Infer, the bi-abduction checker,
that finds Null Dereferences, Memory Leaks, Retain Cycles and other memory
related issues.
The analysis performs a symbolic execution of the code, keeping data structures
that represent a symbolic heap, and trying to prove memory safety of the
program. When it fails to prove it, it can report an error, if it finds a Null
Dereference or Memory Leak, or it can find itself in an inconsistent state. In
any case, it will stop the analysis of that particular procedure because the
attempted proof doesn't make sense anymore. Another cause of the analysis not
reaching some part of the code is that we introduce timeouts in the analysis,
because otherwise it would take too long. So it could reach a timeout before
reaching the end of the method. So when Infer doesn't find a particular bug,
it's possible that it is because it couldn't reach that part of the code.

61
website/versioned_docs/version-1.0.0/support.md
Unescape View File

@ -40,7 +40,7 @@ adapt to your project:
infer run -- xcodebuild -workspace HelloWorld.xcworkspace -scheme HelloWorld
```
### "infer [options] -- \<build command\>" fails during a linking step
### `infer [options] -- <build command>` fails during a linking step
The linker will sometimes not work if files have been compiled using a different
compiler, such as the one Infer uses [under the hood](/docs/1.0.0/infer-workflow) to
@ -66,11 +66,6 @@ Please run Infer with the following environment variable setting:
GCC_PRECOMPILE_PREFIX_HEADER=NO
```
### Using Infer with Maven results in no output
Try upgrading `maven-compiler-plugin`. See also
[this GitHub issue](https://github.com/facebook/infer/issues/38).
### Infer reports a "Too many open files" error
The maximum number of files a program can simultaneously hold open is a bit low
@ -96,27 +91,19 @@ infer run -- gradle build -x lint
See also [this GitHub issue](https://github.com/facebook/infer/issues/58).
### Running "infer [options] -- \<build command\>" fails with some other error
### Running `infer [options] -- <build command>` fails with some other error
Please make sure that:
- \<build command\> runs successfully on its own.
- `<build command>` runs successfully on its own.
- `infer` is in your `$PATH` (try `which infer`, it should show where `infer` is
located)
### Running Infer fails with "ImportError: No module named xml.etree.ElementTree"
Make sure that the `xml` Python package is installed. For instance, on OpenSuse
13.1, it is provided by the
[`python-xmldiff`](http://software.opensuse.org/download.html?project=XML&package=python-xmldiff)
package.
### I get errors compiling Infer
Make sure the dependencies are up to date. They may change as we update Infer
itself; you may also need to recompile the facebook-clang-plugins when it
changes version. See the
[installation document](https://github.com/facebook/infer/blob/master/INSTALL.md)
Make sure the dependencies are up to date. They may change as we
update Infer itself. See the [installation
document](https://github.com/facebook/infer/blob/master/INSTALL.md)
for an up-to-date list of dependencies and how to get them.
### My problem is not listed here
@ -129,9 +116,10 @@ Here are some frequently asked questions. More to come.
### How do I suppress Infer warnings on a class or method?
In Java code, you can do this by annotating your class or method with
`@SuppressLint("infer")`. Or `@SuppressWarnings("infer")` if your Infer is older
than v0.10.0.
In Java code, you can do this *for some error types* by annotating
your class or method with `@SuppressLint("<ISSUE_TYPE>")`, for example
`@SuppressLint("NULL_DEREFERENCE")`. However, not all checkers honor
this annotation.
### Is Infer supported for Windows?
@ -140,12 +128,12 @@ a Linux virtual machine if your project can be compiled on Linux.
### How does Infer compare to the Clang Static Analyzer?
On iOS there is the Clang Static analyzer. Infer does some things different, in
particular reasoning that spans across multiple files. But CSA checks for more
kinds of issues and is also more mature than Infer when it comes to iOS: we send
big respect to CSA! Infer has only got started there recently. Really, these
tools complement one another and it would even make sense to use both. Indeed,
that's what we do inside Facebook.
Infer and Clang Static Analyzer (CSA) will typically find different
kinds of issues on the same project. One thing that sets Infer apart
from other static analysis tools is its ability to reason and find
issues across multiple files. But CSA will find many kinds of issues
that Infer doesn't find: we send big respect to CSA! Really, these
tools complement one another and it makes sense to use both.
### How does Infer compare to Android linters and Findbugs?
@ -154,20 +142,3 @@ Linters, in contrast, typically implement simple syntactic checks that are local
within one procedure. But they are valuable and Infer doesn't try to duplicate
what they are good at. At Facebook we run both Infer and a collection of Android
linters. Findbugs can be useful too; it is more akin to linters.
### Why Infer doesn't find a particular bug?
The answer here is for one of the checkers of Infer, the bi-abduction checker,
that finds Null Dereferences, Memory Leaks, Retain Cycles and other memory
related issues.
The analysis performs a symbolic execution of the code, keeping data structures
that represent a symbolic heap, and trying to prove memory safety of the
program. When it fails to prove it, it can report an error, if it finds a Null
Dereference or Memory Leak, or it can find itself in an inconsistent state. In
any case, it will stop the analysis of that particular procedure because the
attempted proof doesn't make sense anymore. Another cause of the analysis not
reaching some part of the code is that we introduce timeouts in the analysis,
because otherwise it would take too long. So it could reach a timeout before
reaching the end of the method. So when Infer doesn't find a particular bug,
it's possible that it is because it couldn't reach that part of the code.

63
website/versioned_docs/version-1.1.0/support.md
Unescape View File

@ -40,10 +40,10 @@ adapt to your project:
infer run -- xcodebuild -workspace HelloWorld.xcworkspace -scheme HelloWorld
```
### "infer [options] -- \<build command\>" fails during a linking step
### `infer [options] -- <build command>` fails during a linking step
The linker will sometimes not work if files have been compiled using a different
compiler, such as the one Infer uses [under the hood](/docs/infer-workflow) to
compiler, such as the one Infer uses [under the hood](/docs/1.1.0/infer-workflow) to
analyze your files.
A workaround consists in setting the `LD` environment variable to a dummy
@ -66,11 +66,6 @@ Please run Infer with the following environment variable setting:
GCC_PRECOMPILE_PREFIX_HEADER=NO
```
### Using Infer with Maven results in no output
Try upgrading `maven-compiler-plugin`. See also
[this GitHub issue](https://github.com/facebook/infer/issues/38).
### Infer reports a "Too many open files" error
The maximum number of files a program can simultaneously hold open is a bit low
@ -96,27 +91,19 @@ infer run -- gradle build -x lint
See also [this GitHub issue](https://github.com/facebook/infer/issues/58).
### Running "infer [options] -- \<build command\>" fails with some other error
### Running `infer [options] -- <build command>` fails with some other error
Please make sure that:
- \<build command\> runs successfully on its own.
- `<build command>` runs successfully on its own.
- `infer` is in your `$PATH` (try `which infer`, it should show where `infer` is
located)
### Running Infer fails with "ImportError: No module named xml.etree.ElementTree"
Make sure that the `xml` Python package is installed. For instance, on OpenSuse
13.1, it is provided by the
[`python-xmldiff`](http://software.opensuse.org/download.html?project=XML&package=python-xmldiff)
package.
### I get errors compiling Infer
Make sure the dependencies are up to date. They may change as we update Infer
itself; you may also need to recompile the facebook-clang-plugins when it
changes version. See the
[installation document](https://github.com/facebook/infer/blob/master/INSTALL.md)
Make sure the dependencies are up to date. They may change as we
update Infer itself. See the [installation
document](https://github.com/facebook/infer/blob/master/INSTALL.md)
for an up-to-date list of dependencies and how to get them.
### My problem is not listed here
@ -129,9 +116,10 @@ Here are some frequently asked questions. More to come.
### How do I suppress Infer warnings on a class or method?
In Java code, you can do this by annotating your class or method with
`@SuppressLint("infer")`. Or `@SuppressWarnings("infer")` if your Infer is older
than v0.10.0.
In Java code, you can do this *for some error types* by annotating
your class or method with `@SuppressLint("<ISSUE_TYPE>")`, for example
`@SuppressLint("NULL_DEREFERENCE")`. However, not all checkers honor
this annotation.
### Is Infer supported for Windows?
@ -140,12 +128,12 @@ a Linux virtual machine if your project can be compiled on Linux.
### How does Infer compare to the Clang Static Analyzer?
On iOS there is the Clang Static analyzer. Infer does some things different, in
particular reasoning that spans across multiple files. But CSA checks for more
kinds of issues and is also more mature than Infer when it comes to iOS: we send
big respect to CSA! Infer has only got started there recently. Really, these
tools complement one another and it would even make sense to use both. Indeed,
that's what we do inside Facebook.
Infer and Clang Static Analyzer (CSA) will typically find different
kinds of issues on the same project. One thing that sets Infer apart
from other static analysis tools is its ability to reason and find
issues across multiple files. But CSA will find many kinds of issues
that Infer doesn't find: we send big respect to CSA! Really, these
tools complement one another and it makes sense to use both.
### How does Infer compare to Android linters and Findbugs?
@ -154,20 +142,3 @@ Linters, in contrast, typically implement simple syntactic checks that are local
within one procedure. But they are valuable and Infer doesn't try to duplicate
what they are good at. At Facebook we run both Infer and a collection of Android
linters. Findbugs can be useful too; it is more akin to linters.
### Why Infer doesn't find a particular bug?
The answer here is for one of the checkers of Infer, the bi-abduction checker,
that finds Null Dereferences, Memory Leaks, Retain Cycles and other memory
related issues.
The analysis performs a symbolic execution of the code, keeping data structures
that represent a symbolic heap, and trying to prove memory safety of the
program. When it fails to prove it, it can report an error, if it finds a Null
Dereference or Memory Leak, or it can find itself in an inconsistent state. In
any case, it will stop the analysis of that particular procedure because the
attempted proof doesn't make sense anymore. Another cause of the analysis not
reaching some part of the code is that we introduce timeouts in the analysis,
because otherwise it would take too long. So it could reach a timeout before
reaching the end of the method. So when Infer doesn't find a particular bug,
it's possible that it is because it couldn't reach that part of the code.

Write Preview
Loading…
Cancel
Save